794 Basic Titrino - Login
CH-9101 Herisau/Switzerland
E-Mail
info@metrohm.com
Internet www.metrohm.com
794 Basic Titrino
Program version 5.794.0010
Instructions for Use
8.794.1003
02.2002 / pkl
Table of contens
Table of contents
1
Introduction...........................................................................................................1
1.1
Instrument description........................................................................................... 1
1.2
Controls and parts ................................................................................................. 2
2
Manual operation..................................................................................................6
2.1
Keypad .................................................................................................................. 6
2.2
Principle of data input............................................................................................ 7
2.3
Text input ............................................................................................................... 8
2.4
Tutorial ................................................................................................................... 9
2.4.1
Entering data, setting the dialog language.................................................... 9
2.4.2
Development of a method, titration of an acid............................................. 11
2.4.3
Storage and loading of methods ................................................................. 16
2.4.4
pH calibration.............................................................................................. 17
2.4.5
Statistics, acid capacity of drinking water.................................................... 18
2.5
Configuration, key <CONFIG>........................................................................... 22
2.6
Selection of the mode, key <MODE> ................................................................ 24
2.7
Parameters, key <PARAM> ............................................................................... 26
2.7.1
Parameters for DET and MET ...................................................................... 26
2.7.2
Parameters for SET ...................................................................................... 36
2.7.3
Parameters for MEAS................................................................................... 45
2.7.4
Parameters for CAL...................................................................................... 47
2.7.5
Parameters for TIP ....................................................................................... 50
2.8
Result calculations............................................................................................... 52
2.9
Statistics calculation ............................................................................................ 55
2.10 Common variables .............................................................................................. 57
2.11 Data output.......................................................................................................... 58
2.12 TIP, Titration procedure ....................................................................................... 62
2.13 Method memory, keys <USER METH> ............................................................. 66
2.14 Calibration data, key <CAL.DATA> ................................................................... 68
2.15 Current sample data, key <SMPL DATA> ......................................................... 69
2.16 Silo memory for sample data .............................................................................. 70
2.17 Storing determination results and silo calculations............................................. 73
2.17.1 Storing determination results ....................................................................... 73
2.17.2 Silo calculations ........................................................................................... 74
3
Operation via RS232 Interface...........................................................................77
3.1
General rules ....................................................................................................... 77
3.1.1
Call up of objects ......................................................................................... 78
3.1.2
Triggers ........................................................................................................ 79
3.1.3
Status messages ......................................................................................... 80
3.1.4
Error messages............................................................................................ 82
3.2
Remote control commands ................................................................................. 85
3.2.1
Overview....................................................................................................... 85
3.2.2
Description of the remote control commands ........................................... 102
3.3
Properties of the RS 232 Interface..................................................................... 125
3.3.1
Handshake................................................................................................. 125
3.3.2
Pin Assignment .......................................................................................... 129
3.3.3
What can you do if the data transfer does not work? ................................ 131
794 Basic Titrino
Table of contents
4
Error messages, Troubleshooting ...................................................................133
4.1
Error and special messages ............................................................................. 133
4.2
Diagnosis .......................................................................................................... 137
4.2.1
General ...................................................................................................... 137
4.2.2
Procedure .................................................................................................. 137
4.2.3
Equipment required: .................................................................................. 138
4.2.4
Diagnosis steps ......................................................................................... 138
4.3
Initialise and test RAM....................................................................................... 147
4.4
Releasing a locked spindle ............................................................................... 148
5
Preparations .....................................................................................................149
5.1
Setting up and connecting the instruments ...................................................... 149
5.1.1
Titrino with Stirrer or Titration Stand........................................................... 149
5.1.2
Connection of a printer .............................................................................. 150
5.1.3
Connection of a balance............................................................................ 151
5.1.4
Connection of a Sample Changer ............................................................. 152
5.1.5
Connection of a recorder........................................................................... 153
5.1.6
Connection of a computer ......................................................................... 154
5.2
Connection of electrodes, preparing titration vessel ........................................ 155
6
Appendix ...........................................................................................................158
6.1
Technical specifications .................................................................................... 158
6.2
Pin assignment of the "Remote" socket ............................................................ 161
6.2.1
Lines of the "Remote" socket during the titration ....................................... 163
6.2.2
Possible configurations of the activate pulse in SET and CAL.................. 164
6.3
User methods.................................................................................................... 165
6.3.1
General ...................................................................................................... 165
6.3.2
"Titer_pH" ................................................................................................... 166
6.3.3
"Blank" ........................................................................................................ 167
6.3.4
"Chloride" ................................................................................................... 168
6.3.5
"TAN-TBN".................................................................................................. 169
6.3.6
"Diazo"........................................................................................................ 170
6.3.7
"Br-Index" ................................................................................................... 171
6.3.8
"Sapon.No"................................................................................................. 172
6.3.9
"Ca-Mg" ...................................................................................................... 173
6.3.10 "EDTA-NTA"................................................................................................ 174
6.3.11 "Metals" ...................................................................................................... 175
6.3.12 "Perox.No" .................................................................................................. 176
6.3.13 "FormolNo"" ................................................................................................ 177
6.3.14 "P2O5Fert""................................................................................................. 180
6.4
Validation / GLP................................................................................................. 183
6.5
Warranty and conformity ................................................................................... 184
6.5.1
Warranty..................................................................................................... 184
6.5.2
EU Declaration of conformity..................................................................... 185
6.5.3
Certificate of Conformity and System Validation ....................................... 186
6.6
Scope of delivery and ordering designations ................................................... 187
Index.........................................................................................................................190
794 Basic Titrino
1.1 Instrument description
1
Introduction
1.1 Instrument description
The 794 Basic Titrino is an all-purpose titrator. Titration modes of the 794 Basic Titrino are
constant or – depending on the titration curve – variable dosing of the titration reagent
and Endpoint-Titration.
All operating modes of the Titrino can be combined to perform extensive analytical sequences. Ready-to-start methods for the most common applications are stored in the
internal method memory. The operator is free to modify and overwrite this methods or to
create and store his own titration sequences.
Data exchange with a PC is possible with the Metrodata VESUV Software and with Metrodata TiNet Software complete remote control, data acquisition and evaluation via PC is
enabled.
794 Basic Titrino
1
1.2 Controls and parts
1.2 Controls and parts
Front view of instrument:
2
794 Basic Titrino
1.2 Controls and parts
1
Exchange Unit
2
Display
3
Setting of display contrast
4
Controls the dosing rate during manual dosing with <DOS> and subsequent filling
5
Control keys and indicator lamps on the Titrino
Key <DOS>
Key <STOP/FILL>
Key <START>
Indicator lamps:
"Statistics"
"Silo"
794 Basic Titrino
Dosing key. Dispensing is performed as long as <DOS> is being
pressed. Used e.g. to prepare the Exchange Unit. The dispensing
rate can be set with potentiometer (4).
- Stops procedures, e.g. titrations, conditioning.
- Filling after manual dosing with <DOS>.
Starts procedures, e.g. titrations, conditioning.
Identical with key <START> of the separate keypad.
Lamp is on when the "statistics" function (calculation of mean and
standard deviation) is on.
Lamp is on when silo memory (for sample data) is on.
3
1.2 Controls and parts
Rear view of instrument:
4
794 Basic Titrino
1.2 Controls and parts
6
RS232 interface
for the connection of printer, balance or a computer
7
Remote lines
(input/output)
for the connection of the Remote Box, Sample Changers, robots etc.
8
Connection of electrodes and temperature sensor
• 2 high-impedance measuring inputs for pH and U measurements (Ind I/ Ind II).
They can either be used separately or for differential potentiometry, see page
155.
Important: If you work with both measuring inputs in the same vessel, the same
reference electrode must be used.
• 1 measuring input for polarized electrodes (Pol).
• 1 measuring input for PT100 or Pt1000 temperature sensor.
9
Connection for separate keypad
10
Analog output for the connection of a recorder
11
Connection for power cable
With power supplies where the voltage is subject to severe HF disturbances, the Titrino should be operated via an additional power filter, e.g. Metrohm 615 model.
12
Mains switch
13
Earthing socket
14
Connection for stirrer
728 Magnetic Stirrer, 802 Rod Stirrer, 703 or 727 Ti Stand
Supply voltage: 9 VDC (I ≤ 200 mA)
15
Display of the set mains voltage
Before switching on for the first time, check that the set mains voltage matches the
voltage of your power supply. If this is not the case, disconnect mains cable and
change voltage.
16
Rating plate
with fabrication, series and instrument number
794 Basic Titrino
5
2.1. Keypad
2 Manual operation
2.1 Keypad
CONFIG
PARAM
SMPL DATA
STATISTICS
Configuration.
Parameters.
Sample data.
ON/OFF switching of statistics calculations of consecutive determination,
see page 55.
MEAS/HOLD ON/OFF switching of measurements
between titrations and hold during
titrations.
SILO
ON/OFF switching of silo memory for
sample data, see page 69.
CAL.DATA Calibration data, see page 68.
C-FMLA
Calculation values, see page 54.
DEF
Formulas, data output, sequence for
TIP, see page 52ff.
USER METH Management of internal method
memory, see page 66.
PRINT
Printing of reports, see page 60.
REPORTS Result output.
MODE
Mode selection, see page 24.
<,>
Keys for text input.
SELECT
Selection of special values (dialog
marked with ":")
CLEAR
Clears values, set special values.
ENTER
Stores values.
STOP
Stops methods.
QUIT
Quits inquiries, waiting times, printing.
START
Starts methods.
The third functions (inscriptions in the triangle) on the keys of the keypad are used for
formula entry, see page 52.
6
794 Basic Titrino
2.2 Principle of data input
2.2 Principle of data input
• If you press a key you will find the corresponding
menu in the display.
Example key <CONFIG>:
In the first line you see where you are: You pressed
key <CONFIG> and you are now in the menu "configuration".
configuration
>peripheral units
• In our example you are in the menu "configuration"
on the title ">peripheral units". By pressing
<CONFIG> you can move to the other titles of this
menu.
>peripheral units
send to:
IBM
• If a dialog text is marked with ">", it contains a
group of inquiries. You branch into this group by
pressing <ENTER>.
Example inquiries of "peripheral units":
The first line indicates again where you are.
If a dialog text of an inquiry is marked with ":", you
can select a value with the key <SELECT>.
• A value is stored with <ENTER> and the cursor
moves to the next inquiry.
• Repeated pressing of <ENTER> moves you
through the inquiries of the group ">peripheral
units“, after the last inquiry of this group you leave
this group and return to the level above.
The next group of the menu "configuration“ appears:
">auxiliaries“
configuration
>auxiliaries
• With key <QUIT> you leave an inquiry or a group of
inquiries, it always moves you one level up.
DET pH
794 Basic Titrino
********
• In this example you leave the menu "configuration"
by pressing <QUIT> and return to the display of titration mode and the chosen method.
7
2.3. Text input
2.3 Text input
Example storing a method:
<USER METH>
• Press key <USER METH>, the group ">recall
method" appears.
user methods
>recall method
<USER METH>
<ENTER>
• Choose ">store method" by pressing <USER
METH> and press <ENTER>.
The name of the method which is currently in the
working memory is displayed.
>store method
method name:
<CLEAR>
• Delete this name with <CLEAR>.
<<>
>store method
method name:
• Open the "text writing mode" with key <<>.
ABCDEFG
When you confirmed the last character, i.e. your
name is complete, you quit the text writing mode
with <QUIT>.
Confirm now the name with <ENTER>.
<QUIT>
<ENTER>
>store method
method name:
• Select the character marked by the blinking cursor
with the Keys <<> and <>>, confirm it with
<ENTER>. Select the next character...
If your text fills the whole text field, just press
<ENTER> to store the text.
text
• During text input you can correct typing errors with
<CLEAR>:
<CLEAR> deletes the characters one by one.
• If you wish to modify an existing name (e.g. if you
have names like Text 1, Text 2, Text 3), do not delete
the existing name before you start the text input
mode. Proceed then as follows:
1. Press <USER METH>, place the cursor to
">store method" and press <ENTER>.
2. Open the text writing mode directly: Press key
<<>.
3. <CLEAR> now deletes the characters one by
one or you can add additional characters.
8
794 Basic Titrino
2.4 Tutorial
2.4 Tutorial
This short operating course teaches you to work quick and efficient with the 794 Basic
Titrino, by means of the most important applications.
Set up your Titrino and connect the peripheral devices needed, see chapter 5.
2.4.1 Entering data, setting the dialog language
We can thus make a start and first take a look at the fundamentals of the entry of data.
We change the dialog language.
DET pH
********
<CONFIG>
• Press the key <CONFIG>, the display shows:
This is the title of the group "peripheral units". This
group contains various inquiries about peripheral
units.
configuration
>peripheral units
<CONFIG>
• Press again <CONFIG>. You see the title of a new
group of inquiries.
This "auxiliaries" group contains the inquiry for the
dialog language.
configuration
>auxilliaries
<ENTER>
>auxilliaries
dialog:
• Pressing the <ENTER> key takes you to the inquiries of the group "auxiliaries". Note the ">" sign. All titles of inquiry groups are prefixed by this sign.
english
<SELECT>
>auxilliaries
dialog:
español
<ENTER>
>ajustes varios
fecha
2002-01-02
794 Basic Titrino
• Switch on the Titrino. It is now in the standby state, it
shows you the active mode and method name.
This is the first inquiry of the "auxiliaries" group: the
selection of the dialog language.
• You select the various dialog languages with the
<SELECT> key. Press <SELECT> repeatedly until
"español" appears in the display.
Note the sign ":". It appears if the values can be selected with the key <SELECT>.
• Accept the new "value" with <ENTER>.
The next inquiry "fecha" (date) of the group "ajustes
varios" (auxiliaries) is shown.
You can open this inquiry by pressing <ENTER>
too and go through all the inquiries of this group this
way.
9
2.4. Tutorial
Because this inquiry follows no colon ":" the value
can't be selected by <SELECT>, the date "fecha"
has to be entered with the numeric keys.
<QUIT>
• Exit the inquiries with <QUIT>. You are one level
higher in the "configuration" menu showing the title
"ajustes varios" (auxiliaries).
configuration
>ajustes varios
<QUIT>
DET pH
10
• Press <QUIT> once again to exit the "configuration"
menu and return to the standby state.
********
All the dialog texts will now be displayed in Spanish.
If you prefer English as the displayed dialog language, proceed as before and select "English".
794 Basic Titrino
2.4 Tutorial
2.4.2 Development of a method, titration of an acid
Selection of the mode
<MODE>
mode
mode
DET
<ENTER>
DET pH
DET:
• Press <MODE> repeatedly until "DET" appears in
the display. For a description of the DET mode see
page 25.
• Confirm "DET" with <ENTER>
********
pH
4 × <SELECT>
DET pH
• Now select the measured quantity: Press
<SELECT> repeatedly until "pH" appears again in
the display.
Confirm the measured quantity "pH" with
<ENTER>.
********
You are now ready to titrate.
For the titration put a Exchange Unit with c(NaOH) = 0.1 mol/L on the Titrino and rinse
the tubing and the buret Tipp with <DOS>. Fill the buret again with <STOP/FILL>.
Plug a combined pH glass electrode into measuring input 1 (Ind I).
Pipette 2 mL c(HCl) = 0.1 mol/L into your titration vessel, dilute with ca. 20 mL dist. water.
Put a magnetic stirrer in the titration vessel and place buret tip and electrode in the probe,
see page 157 for their arrangement.
Start the stirrer and press <START>
During the titration the first line of the display shows the current measured value and the
volume already dispensed:
pH
3.02
0.351 ml
As soon as the instrument has found an equivalence point, this is shown on the second
line:
pH
7.64
2.083 ml
EP1
Let the titration continue for a short while, e.g. until ca. pH 11.50. Now stop it with
<STOP>.
DET pH
********
EP1
2.083 ml pH
7.64
The first line now shows the mode "DET pH" and the name of the chosen method (here
"********" because this method has not been saved under a own name until now). Of
interest is the second line, which shows the equivalence point found.
794 Basic Titrino
11
2.4. Tutorial
If more than one equivalence point has been found, the others can be viewed with
<ENTER>.
Calculation of the result: formula entry
With this equivalence point a result can be calculated.
• Press the <DEF> key.
<DEF>
def
>formula
<ENTER>
•
Press <ENTER> to move on to the formula entry.
The display now shows "RS?".
<1>
•
Press "1", i.e. the first formula.
RS?
RS1=
You now can enter a formula. Note here the top inscription on the keys of the keypad and the numbers. The
following symbols can be used:
EP# EP's with 1-digit number, e.g. EP1.
RS# Previously calculated results, e.g. RS1 in the second formula.
C## Calculation constant with 2-digit number, e.g. C01.
C00 is reserved for the sample size. For the meaning of the calculation constants see page 53.
Calculate the content of your hydrochloric acid in g/L:
RS1=EP1*C01*C02/C00
End point*conc.(titrant)*molecular weight/sample size
To correct a formula, delete it with <CLEAR>.
• Confirm the formula with <ENTER>.
RS1=EP1*C01*C02/C00
<ENTER>
>formula
RS1 text
RS1
>formula
RS1 decimal places
2
>formula
RS1 unit
%
•
You may enter a text for the result output, see page
8.
•
Enter the desired number of decimal places for the
result.
•
Select the desired unit g/L with <SELECT>, or type
a text as unit, see page 8.
<SELECT>
<ENTER>
The Titrino prompts for the calculation of the next result.
RS?
2 x <QUIT>
Quit the formula entry by pressing <QUIT> twice.
In order to be able to calculate the result, enter the calculation constants used in the formula.
12
794 Basic Titrino
2.4 Tutorial
Entry of the calculation constants
<C-FMLA>
C-fmla
>C01
0.0
• Press <C-FMLA>.
The constants which have been used in the formula
are requested: input with digit keys, confirm with
<ENTER>.
C01: Concentration of your titrant= 0.1 mol/L. Enter
0.1.
C02: Molar mass of HCl = 36.47 g/mol
Entry of the sample size
4 x <SMPL DATA>
smpl data
smpl size
•
Press <SMPL DATA> repeatedly until "sample size"
appears in the display.
•
Enter 2.
•
Use <SELECT> to select the unit "mL" and confirm
the new value with <ENTER>.
1.0 g
<2>
<ENTER>
smpl data
smpl unit:
g
<SELECT>
<ENTER>
The result is now calculated and can be displayed in place of the equivalence point. If
your method already includes a formula at the end of the titration, the calculated result is
displayed directly after the titration. As we have entered the formula later, we now have to
select the result display:
Display of the result
<SELECT>
DET pH
>display results
794 Basic Titrino
Press <SELECT> repeatedly until ">display results"
appears in the display.
•
Press <ENTER> to move to the result display.
********
<ENTER>
DET pH
RS1
•
********
3.80 g/l
13
2.4. Tutorial
If you have a printer connected, you probably wish to have the curve and a result report
printed out automatically at the end of a titration.
To install a printer, see page 150.
Print reports
4 x <DEF>
•
Press <DEF> repeatedly until the display shows:
<ENTER>
•
Press <ENTER> to move to the definition of reports.
6 x <SELECT>
<;>
9 x <SELECT>
•
With <SELECT> you select the individual repot
blocks. Use a ";" as delimiter between the report
blocks to print more than one block. If you wish to
print out a curve and a full result report, enter
"curve;full".
•
Confirm the entry with <ENTER> and quit the inquiries with <QUIT>.
def
>report
report:
report:curve;full
<ENTER>
<QUIT>
Now print your reports by pressing <PRINT><REPORTS><ENTER>. Your printout will
look like the following:
'cu
794 Titrino
01102
date 2002-01-03
time 17:34
start V
0.000 ml
DET pH
1.0 ml/div
dpH=2.0/div
794.0010
1
********
Identification of the report type (cu=curve)
Start volume, mode and method name
Scaling of curve axis
−−−−−−−−−−−−−−−−
'fr
794 Titrino
01102
date 2002-01-03
time 17:34
pH(init)
2.88
DET pH
smpl size
2 ml
EP1
2.083 ml
RS1
3.80 g/l
manual stop
−−−−−−−−−−−−−−−−
14
794.0010
1
********
7.64
Identification of the report type (fr=full report)
Device type with identification and program version
Initial pH, mode and method name
Volume and pH value of EP1
Calculated result
794 Basic Titrino
2.4 Tutorial
So that you do not have to stop your titration manually each time, let us add a stop criterion for the titration.
Stop criterion
2 x <PARAM>
• Press <PARAM> twice to display the title ">stop
conditions".
parameters
>stop conditions
<ENTER>
>stop conditions
stop V:
•
abs.
Open this group of inquiries with <ENTER>.
Absolute stop volume. This can be used as a safety
measure to prevent overflow of the titration vessel.
<ENTER>
>stop conditions
stop V:
99.99 ml
The magnitude of the absolute stop volume. Set a value
that appears suitable for your titration vessel.
<ENTER>
>stop conditions
stop pH
<ENTER>
2 x <QUIT>
OFF
Set the pH value, e.g. pH=11.5 as the expected stop
criterion.
If several stop criteria have been set, the one that is
reached first applies.
Confirm your entries with <ENTER> and quit the inquiry
with <QUIT>.
The development of your method is now complete. Before we store it in the method memory, you should check it again. Prepare a fresh sample and restart the titration with
<START>.
If everything appears to be all right, you can now store the method in the method memory.
794 Basic Titrino
15
2.4. Tutorial
2.4.3 Storage and loading of methods
Now store the method you have just developed in the method memory.
Storage of a method
2 × <USER METH>
user methods
>store method
<ENTER>
>store method
method name:
• Press <USER METH> repeatedly until the title
">store method" appears in the display.
• Open the inquiry with <ENTER>.
********
• Enter an identifier, e.g. 1 or Acid.
For text input see page 8.
<ENTER>
DET pH
Acid
The method now runs under the name "Acid". It is ready
to titrate.
If you have a printer connected, you can print out the contents of your method memory.
Key sequence:
<PRINT><USER METH><ENTER>
Stored methods can be loaded at any time.
Loading a method from the method memory
<USER METH>
• Press <USER METH>. The display shows the title
">recall method".
user methods
>recall method
<ENTER>
>recall method
method name:
DET pH
• Open the inquiry <ENTER>
********
<SELECT>
or
direct entry
• You can select the desired method with <SELECT>
(it shows all methods of the method memory one after the other) or by directly enter the method name.
<ENTER>
• Load the method with <ENTER>
Acid
The method is ready to titrate.
16
794 Basic Titrino
2.4 Tutorial
2.4.4 pH calibration
pH calibrations are not a requirement for pH titrations, when the equivalence point is determined from a curve. For end-point titrations, however, where titration is performed to a
fixed, specified pH value, a calibration should be performed.
Selection of the calibration mode, CAL
<MODE>
• Press <MODE> repeatedly until "CAL" appears in
the display and confirm the mode with <ENTER>.
mode
mode
CAL
<ENTER>
CAL
********
pH(as) 7.00 slope
1.000
The instrument is ready for a 2-point calibration. The
second display line shows the current calibration data
for measuring input 1.
Calibration procedure
<START>
CAL
cal.temp.
• Immerse your electrode in the first buffer and start
the calibration procedure.
25.0°C
Inquiry of calibration temperature.
• Enter the current temperature. If you have a temperature sensor connected, this inquiry is skipped.
25.0°C
7.00
pH value of the first buffer.
• Enter the pH value of the buffer at your calibration
temperature.
<ENTER>
buffer 1 pH
<ENTER>
buffer 2 pH
25.0°C
4.00
<ENTER>
oder
<STOP>
CAL
********
pH(as) 6.89 slope
0.985
The voltage of the first buffer is measured. When the
measured value has met the set drift criterion, the
measurement is stopped and the pH value of the second buffer is requested.
• Now enter the pH value of the second buffer. If you
require a 1-point calibration, you can also terminate
the calibration with <STOP>.
At the end of the calibration, the calibration data obtained are displayed: asymmetry pH and slope.
The calibration data can be viewed at any time under the <CAL.DATA> key. Our calibration data are stored under ">input 1".
The calibration report can be printed out at any time with the key sequence:
<PRINT><CAL.DATA><ENTER>
794 Basic Titrino
17
2.4. Tutorial
2.4.5 Statistics, acid capacity of drinking water
Let us now determine the acid capacity of drinking water. For this, the SET (set endpoint
titration) mode is used to titrate to pH = 4.3.
First select the mode SET pH (keys <MODE> and <SELECT>).
Now set the end point.
Entry of the end point and the control parameters
<PARAM>
• Press <PARAM>. The display shows:
parameters
>SET1
Control parameters for EP1
<ENTER>
>SET1
EP at pH
OFF
>SET1
EP at pH
4.3
• Set the end point to pH = 4.3.
<ENTER>
>SET1
dynamics
OFF
>SET1
dynamics
3
<ENTER>
>SET1
max.rate
10.0 ml/min
• Dynamics means the control range in which the
adding of the titrant is controlled in dependence on
the measured value (OFF: largest control range, i.e.
slow titration).
With buffered systems such as drinking water, this
value can be set lower, e.g. to 3. I.e. 3 pH units before the set EP controlled dosing starts.
Maximum possible titration rate inside the control
range.
<ENTER>
>SET1
min.rate
Minimum titration rate inside the control range.
25.0µl/min
2 × <QUIT>
• Quit the inquiry with <QUIT>.
Mount an Exchange Unit with c(HCl) = 0.1 mol/L as titrant. Add 25 mL drinking water as
sample and start the titration with <START>. During the titration the first line of the display shows the measured value and dispensed volume. The "c" in pHc shows that the
electrode assembly has been calibrated. The second line shows a "control bar", which
indicates the control deviation of the current measured value from the set end point.
pHc 6.34
#======
18
0.426 ml
794 Basic Titrino
2.4 Tutorial
If the titration runs too slow or too fast, you can change the control parameters during the
titration. If you wish to titrate faster, change the following parameters:
• dynamics: lower value, the control range becomes smaller (Attention: possibility of
titrating over the set EP)
• max.rate: bigger value
• min.rate: bigger value
You will find further details of the control parameters on page 42.
After the titration, end point volume and pH value at the end point are displayed.
For the evaluation enter:
the formula to calculate the m value
(key <DEF>)
RS1=EP1*C01*C02
with an accuracy of
the unit
RS1 decimal places
RS1 unit:
and the calculation constants
(key <C-FMLA>)
C01
C02
2
mmol/L
1 (concentration of titrant ×10)
4 (factor for the sample size 100 mL/25 mL)
If you have a printer connected, select the automatic titration report (key <DEF>): "report:full". You can print out the results of the previous titration with keys
<PRINT><REPORTS><ENTER>.
If the previous titration has run to your satisfaction, you can start thinking about performing statistics calculations. Have you already added a new sample to the titration vessel? If
you are no longer certain, you can find out immediately with <MEAS/HOLD>.
Rapid measurement between titrations
Press <MEAS/HOLD>. The pH value of your sample is displayed. You can stop the
measurement with a second <MEAS/HOLD>.
Statistics calculations
Now switch on the statistics calculations. Press <STATISTICS>. The "Statistics" LED is
on. Duplicate determinations are now performed.
• Perform 2 titrations.
794 Basic Titrino
19
2.4. Tutorial
After the second titration you receive a printout with statistics calculations:
'fr
794 Titrino
01102
794.0010
date 2002-01-03
time 17:34
3
pHc(init)
6.29
SET pH
********
EP1
0.0628 ml
4.26
m value
5.02 mmol/l
mean(2)
+/s
s/%
m value
5.04 0.028 mmol/l 0.56
==============
If you have no printer connected, you can view the mean value and standard deviation:
• Press <SELECT> until "display mean" appears in the display.
• With <ENTER> you obtain the mean value.
• A second <ENTER> displays the number of single values which have been used for
the mean calculation.
• If you press <SELECT> again, the display "display std.deviation" appears. Once
again, you can view this value, by pressing <ENTER>.
Perhaps you have noticed that the two values differ too greatly? In any case, we shall perform a third determination with the same sample. The result of this determination will be
another value which is incorporated in the statistics calculations.
Addition of more determinations for the statistics calculations
• Press <PARAM> until the display shows:
5 × <PARAM>
parameters
>statistics
<ENTER>
>statistics
status:
ON
<ENTER>
>statistics
mean:
n=
2
• Statistics calculations can be switched on either with
the <STATISTICS> key or in the inquiry "status:".
We shall leave them switched on and proceed to the
next inquiry.
Mean value of 2 single determinations.
• Enter "3" to include an additional determination.
<3>
<ENTER>
2 × <QUIT>
• Quit the inquiry.
Perform another titration.
20
794 Basic Titrino
2.4 Tutorial
You can now decide which of the results is an "outlier". You can delete it from the statistics
calculation.
Deleting a result from the statistics calculation
• Press <PARAM> until the display shows:
5 × <PARAM>
parameters
>statistics
• Select with <ENTER> the inquiry of the result table
"res.tab:"
3 × <ENTER>
>statistics
res.tab:
original
• To delete a single result with index n from the result
table, press <SELECT> so that "delete n" appears.
2 × <SELECT>
>statistics
res.tab:
delete n
<ENTER>
>statistics
delete
n=
1
• Enter index n of the result you wish to delete; in our
example the second:
<2>
<ENTER>
2 × <QUIT>
• Quit the inquiry by pressing <QUIT>.
Mean value and standard deviation are recalculated
and can be viewed in the display.
With <PRINT><REPORTS><ENTER> you can print
a fresh report.
With <PRINT> <STATISTICS><ENTER> you can
print a statistics overview, in this report the deleted
result is marked with a "∗" in the report.
794 Basic Titrino
21
2.5. Configuration, key <CONFIG>
2.5 Configuration, key <CONFIG>
Key <CONFIG> serves to enter device specific data.
The set values apply to all modes.
CONFIG
peripheral units:
Selection of printer, balance and the curve at the analog output.
auxiliaries:
e.g. setting of dialog language, date, time, etc.
RS232 settings:
RS parameters for the COM interface.
common variables:
Values of common variables.
configuration
>peripheral units
The display texts of the Titrino are shown to the left.
The values are the default values.
Settings for peripheral units
>peripheral units
send to:
IBM
Selection of printer (Epson, Seiko, Citizen, HP, IBM) at
the Titrino Rs232 interface.
"Epson", for Epson
"Seiko", e.g. for DPU-414
"Citizen", e.g. for iDP 562 RS, Custom DP40-S4N
"HP" e.g. for Desk Jet types. Place curves always at the
beginning of a page as you cannot have them over 2
pages.
"IBM" for all printers with IBM character set Table 437
and IBM graphics, as well as for the data transmission
to a computer with Metrodata software TiNET or
VESUV.
balance:
Sartorius
Selection of balance (Sartorius, Mettler, Mettler AT,
AND, Precisa)
Sartorius: Models MP8, MC1
Mettler:
Models AM, PM, AX, MX, UMX and
balances with 011, 012, or 016 interface
Mettler AT: Model AT
AND:
Models ER-60, 120, 180, 182, FR-200, 300
and FX-200, 300, 320
Precisa:
Models with RS232C interface
record:
22
U
Selection of the curve for the output at the analog
output (U, dU/dt, V, dV/dt, U(rel), T
U:.
Voltage
dU/dt:
Measured value drift
V:
Volume
dV/dt
Volume drift
U(rel):
Control deviation with SET
T:
Temperature with MEAS T
794 Basic Titrino
2.5 Configuration, key <CONFIG>
General settings
>auxiliaries
dialog:
english
date
2001-01-03
time
08:13
Selection of dialog language (english, deutsch,
francais, español, italiano, portugese, svenska)
Current date (YYYY-MM-DD)
Format: Year-month-day, entry with leading zeros.
Current time (HH-MM)
Format: Hours-minutes, entry with leading zeros.
Current run number for result output (0...9999)
The sample number is set to 0 when the instrument is
switched on and incremented on every determination.
run number
0
auto start
OFF
Automatic starts of titrations. (1...9999, OFF)
Number of automatic starts ("number of samples").
Used for instrument interconnections in which the
external instrument does not initiate a start. Not
advisable in connections with Sample Changers.
start delay
0 s
Start delay (0...999999 s)
Delay time after start of methods. Abort start delay time
with <QUIT>.
Individual identification of devices (up to 8 ASCII
characters)
Will be printed in the result report, see page 59.
dev.label.
program
794.0010
Settings of RS232 interface
see also page 125ff.
>RS232 settings
baud rate:
Display of program version
9600
Baud rate (300, 600, 1200, 2400, 4800, 9600)
data bit:
8
Data bit (7, 8)
stop bit:
1
Stop bit (1, 2)
parity:
handshake:
RS control:
794 Basic Titrino
none
HWs
ON
Parity (even, odd, none)
Handshake (HWs, HWf, SWline, SWchar, none)
see page 125ff.
Control via RS232 interface (ON, OFF)
"OFF" means that the receipt of commands via the
RS232 interface is blocked. Data output is possible.
23
2.6. Selection of the mode, key <MODE>
Values of the common variables
>common variables
C30
0.0
etc.
Common variables C30...C39 (0.. ± 999 999)
The values of all common variables are displayed. For
creating of common variables see page 57.
2.6 Selection of the mode, key <MODE>
MODE
>
–
;
Press key <MODE> until the desired mode is
displayed and confirm with <ENTER>.
Select the measured quantity pH, U, Ipol, Upol, (T) with
<SELECT> and confirm it also with <ENTER>.
The following modes can be selected:
• DET: Dynamic Equivalence-point Titration
• MET: Monotonic Equivalence-point Titration
• SET: Set Endpoint Titration.
• CAL: pH Calibration.
• MEAS: Measuring.
• TIP: Titration Procedure. Linking of various
commands and methods to a titration procedure.
These standard modes are equipped with a set of
standard parameters. They only need few settings in
order to be ready to work.
TIP is an empty "shell". The TIP sequence has to be
defined with <DEF>, see page 62.
24
794 Basic Titrino
2.6 Selection of the mode, key <MODE>
Overview of the titration modes
DET
Dynamic Equivalence
point Titration
Reagent feeding:
Variable volume increments,
depending on the slope of
the curve.
U/mV
SET, KFT
Endpoint Titration
MET
Monotonic Equivalence
point Titration
Reagent feeding:
Constant volume increments, independent of the
slope of the curve.
Titration to preset end-point.
U/mV
U/mV
Control
range
Titration
V/mL
Evaluation
V/mL
Acquisition of measured
values:
Drift controlled ("equilibrium
titration")
and/or
after a fixed equilibration
time.
Acquisition of measured
values:
Continuously
The evaluation of EP' s is
based on the zero crossing
of the second derivative with
a Metrohm correction for the
distortion of the curve from
superimposed jumps. Can
be combined with selectable
recognition criteria.
The evaluation of EP's is
based on the Fortuin interpolation.
Volume that has been dispensed up to the endpoint
(EPX in mL).
Suitable titration mode for
most problems. Specially
recommended if jumps lie
very close together and for
very flat jumps.
794 Basic Titrino
V/mL
Acquisition of measured
values:
Drift controlled ("equilibrium
titration")
and/or
after a fixed equilibration
time.
Recognition criteria:
as for MET
Applications
EP
Note: The reagent feeding
algorithm is based on measured data. The curve should
therefore not deviate
markedly from S-shape.
Recognition criteria:
all EP's
only the last EP
only the greatest EP
EP windows
For
•
slow titration reactions
(diazotations, coupling
reactions)
•
sluggish electrode
response.
•
•
For rapid, quantitative
determinations in analytical chemistry. Requirement: EP of the titration reaction is
known and does not
change during a determination series.
If an excess of titrant
must be avoided.
25
2.7. Parameters, key <PARAM>
2.7 Parameters, key <PARAM>
The key <PARAM> is used for the entry of values that
determine the modes. Values marked with "cond." are
accessible during the conditioning in the SET mode.
"**titr." means that these values can be changed during the titration. They influence the ongoing determination. Other values can only be changed in the inactive
state.
The display texts of the Titrino are shown to the left.
The values are the default values.
PARAM
2.7.1 Parameters for DET and MET
titration parameters
determine the course of the titration and measured
value acquisition.
stop conditions:
Parameters for the automatic termination of the titration.
statistics:
Calculation of mean values and standard deviation,
see also page 55.
evaluation:
Parameters for the evaluation of EP's, fix EP's, and
pK/HNP.
preselections:
ON/OFF of various auxiliary functions such as automatic requests after the start and activate pulse.
parameters
>titration parameters
General titration parameters
>titration parameters
4
Measuring point density (0...9)
0 means highest density, 9 lowest. Selection of the
meas.pt.density, see page 32.
min.incr.
10.0 µl
Minimum increment (0...999.9 µL)
The increment is dispensed at the beginning of the
titration and in the region of the equivalence point.
V step
0.10 ml
Size of volume increment (0...9.999 mL)
Dosing step. Small volume increments are needed to
determine blank values or to assure accuracy with
highly unsymmetrical curves. Selection of size of the
increment, see page 33.
meas.pt.density
DET
DET
MET
26
794 Basic Titrino
2.7 Parameters, key <PARAM>
titr.rate
Dosing rate for volume increments (0.01...150 mL/min,
max.)
<CLEAR> sets "max.".
The maximum rate depends on the Exchange Unit:
Exchange Unit
max.
5 mL
15 mL/min
10 mL
30 mL/min
20 mL
60 mL/min
50 mL
150 mL/min
max. ml/min
**titr.
signal drift
50 mV/min
Drift criterion for measured value acquisition. (input
range depends on the measured quantity:
pH, U, Ipol: 0.5...999 mV/min, OFF
Upol:
0.05...99.9 µA/min, OFF)
<CLEAR> sets "OFF".
This type of measured value acquisition is often called
an equilibrium titration.
"OFF" means that the measured value is acquired after
an equilibration time. This may be useful for slow
titration reactions or when the response of the
electrode assembly is slow.
**titr.
equilibr.time
26 s
Waiting time for measured value acquisition. (0...9999 s,
OFF)
<CLEAR> sets "OFF".
If no new equilibration time has been entered, the
Titrino calculates an equilibration time appropriate to
the drift, see page 31. The measured value is acquired
as soon as the first criterion (drift or time) has been
met.
**titr.
start V:
start V
factor
dos.rate
**titr.
794 Basic Titrino
OFF
Type of start volume (OFF, abs., rel.)
"OFF": start volume switched off
"abs": absolute start volume in mL
"rel.": relative start volume to sample size.
0.0 ml
0
max. ml/min
If "abs." is set:
Absolute start volume (0...999.99 mL)
If "rel." is set:
Factor for relative start volume (0...±999 999).
Calculated as: start V (in mL) = factor ∗ sample size
Dosing rate for start volume (0.01...150 mL/min, max.)
<CLEAR> sets "max.".
Maximum rate depends on the Exchange Unit:
Exchange Unit
max.
5 mL
15 mL/min
10 mL
30 mL/min
20 mL
60 mL/min
50 mL
150 mL/min
27
2.7. Parameters, key <PARAM>
pause
0 s
**titr.
meas.input:
1
I(pol)
1 µA
U(pol)
400 mV
electrode test:
temperature
OFF
25.0 °C
abs.
**titr.
stop V
99.99 ml
**titr.
factor
999999
**titr.
stop pH
**titr.
28
Measuring input for pH and U (1, 2, diff.)
Request for measuring input for pH and U.
Measuring input 1 or 2 or differential amplifier;
connection of electrodes, see page 155.
With polarized electrodes, instead of the measuring
input the
polarization current (-127...127 µA)
or the
polarization voltage (-1270...1270 mV, in steps of 10
mV)
is inquired.
Electrode test (OFF, ON)
Test for polarized electrodes. Performed on
changeover from the inactive standby state to a
measurement. "OFF" means that the test is not
performed.
Titration temperature (-170.0...500.0 °C)
The temperature is continuously measured if a T
sensor is connected. This parameter is used for
temperature compensation in pH titrations.
Stop conditions for the titration
If several stop conditions have been set, the criterion
which is met first applies.
>stop conditions
stop V:
Waiting time (0...999999 s)
Waiting time, e.g. for equilibration of the electrode after
the start or reaction time after dosing of start volume.
The pause can be aborted with <QUIT>.
OFF
Type of stop volume (abs., rel., OFF)
"abs.": absolute stop volume in mL.
"rel.": relative stop volume to sample size.
"OFF": stop volume switched off. Stop volume is not
monitored.
If "abs." is set:
Absolute stop volume (0...9999.99 mL)
If "rel." is set:
Factor for relative stop volume (0...±999999)
Calculated as: Stop V (in mL) = factor ∗ sample size
Stop at measured value (input range dependent on
measured variable:
pH:
0... ± 20.00, OFF
U, Ipol: 0... ± 2000 mV, OFF
Upol:
0... ± 200.0 µA, OFF)
<CLEAR> sets "OFF".
"OFF" means that the criterion is not monitored.
794 Basic Titrino
2.7 Parameters, key <PARAM>
stop EP
9
**titr.
Filling rate (0.01...150 mL/min, max.)
<CLEAR> sets "max.".
The maximum rate depends on the Exchange Unit:
Exchange Unit
max.
5 mL
15 mL/min
10 mL
30 mL/min
20 mL
60 mL/min
50 mL
150 mL/min
filling rate max. ml/min
**titr.
Statistics calculation
>statistics
status:
mean
res.tab:
delete
EP recognition:
794 Basic Titrino
Status of statistics calculation (OFF, ON)
If the statistics calculation is switched off, the following
inquiries regarding the statistics do not appear.
OFF
n=
2
original
n=
1
Mean value calculation from n single results (2...20)
Result table (original, delete n, delete all)
"original":
The original table is used. Deleted
individual results are again incorporated in
the evaluation.
"delete n": Deletion of single results with the index n.
"delete all": The entire table is deleted.
Delete data from sample number n (1...20)
The deleted result is removed from the statistics
calculation.
EP evaluation/recognition
See page 32ff.
>evaluation
EPC
Stop after a number of EP's have been found (1...9,
OFF)
<CLEAR> sets "OFF".
"OFF" means that the criterion is not monitored.
5
Equivalence point criterion (input range depends on
mode.
For DET:
0...200
For MET:
pH:
0.10...9.99
U, Ipol:
1...999 mV
Upol:
0.1...99.9 µA)
Threshold for the size of the jump, see page 34.
all
Recognition of EP's which fulfill the EP criterion. (all,
greatest, last, window, OFF)
Selection of equivalence point recognition:
"all":
All equivalence points are recognized.
"greatest": Only the greatest (steepest) equivalence
point is recognized.
"last":
Only the last equivalence point is
recognized.
29
2.7. Parameters, key <PARAM>
low lim.1 pH
up lim.1 pH
-20.00
20.00
fix EP1 at pH
OFF
Interpolation of volumes at fixed times (input range
depends on the measured quantity:
pH:
0...±20.00, OFF
U, Ipol: 0...±2000 mV, OFF
Upol:
0...±200.0 µA, OFF)
<CLEAR> sets "OFF".
If a fix end point has been set, the volume value for the
input measured value is interpolated from the curve,
see also page 35. The volume values are available as
C5X.
Fix EP's are inquired until "OFF" is set. Up to 9 fix EP's.
pK/HNP:
OFF
Evaluation of pK or HNP (ON, OFF)
pK evaluation in case of pH titrations and half
neutralization potential for U, see page 35.
Preselections for the sequence
>preselections
30
"window": Only EP's in specified windows are
recognized.
"OFF":
Evaluation switched off.
If "window" is selected, lower and upper limits of
windows are inquired.
Lower limit of window 1
and
upper limit of window 1
(Input ranges for both inquiries depend on the
measured quantity):
pH:
0...±20.00, OFF
U, Ipol: 0...±2000 mV, OFF
Upol:
0...±200.0 µA, OFF)
<CLEAR> sets "OFF".
Only equivalence points are recognized which lie within
the set lower and upper limits. The equivalence point
numbering is defined with the windows, see page 34.
Window inquiries continue until the lower limit is set to
"OFF". Up to 9 possible windows.
Always set both limits to ≠ OFF for a valid window.
req.ident:
OFF
Request of identifications after start of titration. (id1,
id1&2, all, OFF)
After start, sample identifications can be inquired
automatically: Only id1, id1 & id2, all three id's or no
inquiries.
req.smpl size:
OFF
Request of sample size after start of titration (value, unit,
all, OFF)
"all" requests the value, then the unit.
activate pulse:
OFF
Pulse output on I/O line "activate" (L6, pin 1) of the
remote socket (ON, OFF)
see page 163.
794 Basic Titrino
2.7 Parameters, key <PARAM>
Titration sequence of DET and MET
<START>
(Activate pulse)
(Start delay)
(Request ident.)
(Request smpl size)
After the start, the activate pulse is outputted.
The start delay time is waited off.
The sample identifications and the sample size are requested.
(Start conditions)
The start volume is dispensed (no meas.value acquisition)
and the pause is waited off.
Titration:
Dispense increments
Acquire meas.values
During the titration the volume increments are dispensed
and after each increment a measured value is acquired.
Meas.values are either acquired drift controlled ("equilibrium titration") or a after a fixed waiting time. If you have
not intentionally changed the equilibration time, it is calculated according to the formula:
equilibr.time (in s) =
150
+5
Drift + 0.01
The criterion (drift or equilibration time) which is first met
applies. This avoids "infinite" titrations. If the parameter
"signal drift" is set "OFF", the measured values are acquired after a fixed equilibration time.
Stop conditions
The titration is terminated according to the first criterion
which is met.
Calculations
Evaluations and calculations are carried out.
Data output
Data are outputted.
794 Basic Titrino
31
2.7. Parameters, key <PARAM>
Reagent feeding and EP evaluation of DET
The reagent feeding of DET is similar to the controlling, a human being would apply in
manually controlled titrations: Great volume increments are dosed far away from the EP,
small increments in the region of the equivalence point.
The size of the volume increments dosed by the Titrino is determined by the following
parameters:
meas.pt.density
The measuring point density is entered as a relative
value from 0...9. Input of a low number means small
volume increments, i.e. a large measuring point density
on the curve. A curve results which reproduces all fine
details. "Fine details", however, also include signal noise,
which can easily lead to unwanted equivalence points. A
high number, i.e. low measuring density, on the other
hand, allows a more rapid titration. The standard value of
4 is suitable for most cases.
If you work with small cylinder volumes (1 or 2 mL), a
small measuring point density may be advisable. In
these cases you should also lower the drift for
meas.value acquisition and set a higher EPC.
min.incr.
Defines the minimum possible increment. This minimum
increment is dosed at the beginning of the titration and
in the region of the equivalence point (for steep curves).
Use low minimum increments only, if small volumes of
titrant consumption are expected, e.g. in micro titrations;
otherwise unwanted equivalence points may arise. The
standard value of 10.0 µL is suitable for most cases.
The EP's are evaluated according to a special
METROHM procedure which is so sensitive that even
weak equivalence points are determined correctly.
EPC
32
Equivalence Point Criteria.
The preset EPC is compared to the found ERC
(Equivalence point Recognition Criteria) for each
evaluated equivalence point. The ERC is given in the
following reports: deriv (1st derivative), comp (combined
titration and derivative curves) as well as in the mplist
(measuring point list). The ERC is the first derivative of
the titration curve overlaid with a mathematical function
so that small maxima become higher and great maxima
smaller. EP's whose ERC is below the preset EPC will
not be recognized. For most cases the standard value of
5 is suitable. The evaluation can be repeated at any time
after the titration in a "dry run" with changed evaluation
criteria. The old titration data are not deleted until a new
titration is started.
794 Basic Titrino
2.7 Parameters, key <PARAM>
Reagent feeding and EP evaluation of MET
In monotonic titrations, the volume increment is constant over the whole titration curve.
V step
Volume increment.
A prerequisite for good accuracy is the correct size of
the volume increments. A good value is given by V step
= 1/20 VEP (VEP = volume of the EP). In any case, the
increment size should always be between 1/10 VEP and
1/100 VEP; with steep jumps preferably in the region of
1/100 and with flat jumps preferably in the region of 1/10.
The accuracy of the evaluation can not be increased by
dispensing small increments as the changes in the
measured value can then be of the same order of
magnitude as the noise. This can produce "ghost EP's"!
The EP's are localized with an algorithm which is based
on Fortuin and has been adapted by METROHM for
numeric procedures. Here, the greatest change in the
measured value is sought (∆n). The exact equivalence
point is determined with an interpolation factor, which
depends on the delta values before and after ∆n:
VEP = V0 + ρ ∆V
VEP: EP volume
V0:
Total dispensed volume before ∆n
∆V: Volume increment
ρ:
Interpolation factor (Fortuin)
EPC
794 Basic Titrino
Equivalence Point Criteria.
The preset EPC is compared to the found ERC
(Equivalence point Recognition Criteria) for each
evaluated equivalence point. The ERC is given in the
following reports: deriv (1st derivative), comp (combined
titration and derivative curves) as well as in the mplist
(measuring point list). ERC is the sum of the measured
value changes before and after the break:
∆n-2+∆n-1+∆n+∆n+1+∆n+2
(In certain cases there are only 3 or 1 summand).
EP's whose ERC is below the preset EPC will not be
recognized. For most titrations the standard value is
suitable.
The evaluation can be repeated at any time after the
titration in a "dry run" with changed evaluation criteria.
The old titration data are not deleted until a new titration
is started.
33
2.7. Parameters, key <PARAM>
EP recognition criteria for DET and MET
The parameter "EP recognition" offers you a range of possibilities to ensure selection of
the EP you are interested in: If the desired jump is very large, you can select the "greatest"
jump (with DET the steepest jump will be evaluated). Thus you always obtain just one EP
per titration (EP1).
If you wish to determine the sum of different components (e.g. acid or base numbers), the
"last" jump can be the correct one.
And finally you can set a "window" for each expected EP.
EP windows
EP windows are used
• to suppress disturbing influences and EP's which are not needed.
• to increase the liability for the calculation of the results. The EP windows make an
unequivocal assignment of the EP's possible: per window one EP is recognized; the
numbering of EP's is defined by the windows so that even if EP's are missing, the
calculations are still performed with the correctly assigned EP volumes.
An EP window defines the range in which an EP is expected. EP's outside these ranges
are not recognized. Windows are defined on the measured value axis.
U/mV
EP window 2
EP window 1
EP 2
EP 1
2 EP's are recognized. Their
numbering is defined by the windows:
Window 1 ⇒ EP1
Window 2 ⇒ EP2
If more than 1 EP is expected, a
window must be set for each EP.
V/mL
Windows must not overlap. They may
only touch each another.
U/mV
Rule: If there are more than 1 EP in a
window, the first jump is recognized as
EP1, the second is not recognized.
EP1 is marked as EP1 + to indicate
that more than one EP has been found
in the window
upper lim. 1
EP window 1
EP 1
+
lower lim. 1
V/mL
34
794 Basic Titrino
2.7 Parameters, key <PARAM>
Fix EP's
Fix EP's allow determination of the associated volume value for every inputted measured
value on the titration curve. This function is useful for performing standard methods such
as TAN/TBN determinations. For the evaluation of fix EP's, the pH calibration is advisable.
The volume values of the fix EP's are available for the calculation as C5X:
Fix EP1 ⇒ C51
:
Fix EP9 ⇒ C59
Maximum 9 fix EP's are possible.
pK and HNP evaluation
The following relation (Henderson-Hasselbach), derived from the law of mass action,
exists between the activities of a conjugate acid-base pair in aqueous solutions:
pH = pK + log (aB/aA)
When the activities aB = aA, then pH = pK is valid. This value corresponds to the pH at
the half neutralization point and can be taken from the titration curve. For pK determinations, a careful pH calibration is necessary.
The pK value determined is an approximate value owing to the fact that the ionic strength
of the solution has not been taken into account. For more exact values, titrations must be
performed with decreasing ionic strength and the results extrapolated to zero ionic
strength.
The evaluation of pK's in aqueous solutions is limited to
pK>3.5
due to the leveling effect of strong acids in aqueous solutions
pK<10.5 because for weaker acids no inflection points can be found aqueous
solutions.
pK evaluation for polybasic acids and for acid mixtures is also possible.
In non-aqueous solutions, the half neutralization potential (HNP) is often used instead of
pK. The HNP is evaluated accordingly.
A start volume must be smaller than half of the equivalence point volume of the first EP.
The pK/HNP values are available for calculation as C6X.
794 Basic Titrino
35
2.7. Parameters, key <PARAM>
2.7.2 Parameters for SET
SET1, SET2:
Control parameters for EP1 and EP2.
titration parameters
are valid for the global titration sequence.
stop conditions:
Parameters for the termination of the titration.
statistics:
Calculation of mean values and standard deviation,
see also page 55.
preselections:
ON/OFF of various auxiliary functions such as automatic requests after the start and activate pulse.
parameters
>SET1
Control parameters for EP1 or EP2, resp.
>SET1
EP at pH
OFF
Preset EP1 (input range depends on the measured
quantity:
pH:
0...±20.00, OFF
U, Ipol: 0...±2000 mV, OFF
Upol:
0...±200.0 µA, OFF)
<CLEAR> sets "OFF".
If EP1 is "OFF", no further inquiries under SET1 appear.
OFF
Distance from EP where constant dosing should stop
and controlling begins. (control range, input range
depends on the measured quantity:
pH:
0.01...20.00, OFF
U, Ipol: 1...2000 mV, OFF
Upol:
0.1...200.0 µA, OFF)
<CLEAR> sets "OFF".
"OFF" means largest control range, i.e. low titration.
Outside the control range, dispensing is performed
continuously, see also page 42.
10.0 ml/min
Maximum dosing rate (0.01...150 mL/min, max.)
<CLEAR> sets "max.".
This parameter determines primarily the addition rate
outside the control range, see also page 42.
The maximum rate depends on the Exchange Unit:
Exchange Unit
max.
5 mL
15 mL/min
10 mL
30 mL/min
20 mL
60 mL/min
50 mL
150 mL/min
**titr.
dynamics
**titr.
max.rate
**titr.
36
794 Basic Titrino
2.7 Parameters, key <PARAM>
min.rate
Minimum dosing rate (0.01...999.9 µL/min)
This parameter determines the addition rate right at the
start and the end of the titration, see also page 42.
This parameter influences the titration speed and
therefore its accuracy very strongly: A smaller min.rate
results in a slower titration.
25.0 µl/min
**titr.
stop crit:
Type of stop criteria (drift, time)
drift
**titr.
stop drift
20 µl/min
**titr.
t(delay)
10 s
**titr.
stop time
OFF s
**titr.
start V:
Type of start volume (OFF, abs., rel.)
"OFF":
start volume switched off
"abs.":
absolute start volume in mL
"rel.":
relative start volume to sample size.
OFF
0.0 ml
cond.
factor
**titr.
794 Basic Titrino
If "abs." is set:
Absolute start volume (0...999.99 mL)
0
If "rel." is set:
Factor for relative start volume (0...±999999).
Calculated as: start V (in mL) = factor ∗ sample size
max. ml/min
Dosing rate for start volume
(0.01...150 mL/min, max.)
<CLEAR> sets "max.".
The maximum rate depends on the Exchange Unit:
cond.
dos.rate
Stop after a time (0...999999 s, OFF)
<CLEAR> sets "OFF".
Stop after the set time after the start of the titration.
"OFF" means no stop, i.e. titration for an "infinitely" long
time.
Direction is set automatically (+, -, auto)
auto: The direction is set automatically by the Titrino
(sign [Ufirst - EP]).
+:
Direction of higher pH, higher voltage (more
"positive"), larger currents.
-:
Direction of lower pH, lower voltage, smaller
currents.
The titration direction is fixed if two EP's are set. In this
case, an input for titration direction has no meaning.
auto
cond.
start V
Titration stops if there is no dosing during t(delay).
(0...999 s, INF)
<CLEAR> sets "INF"
Switch off when the end point is reached and the set
time after the last dispensing has elapsed.
If "INF" is set, an inquiry regarding the stop time
appears.
If t(delay) is "INF"
General titration parameters
>titration parameters
titr.direction:
Titration stops if EP is and stop drift is reached. (1...999
µL/min)
37
2.7. Parameters, key <PARAM>
Exchange Unit
5 mL
10 mL
20 mL
50 mL
pause
0 s
**titr.
meas.input:
I(pol)
1 µA
U(pol)
400 mV
electrode test:
temperature
cond.
38
1
OFF
25.0 °C
max.
15 mL/min
30 mL/min
60 mL/min
150 mL/min
Pause (0...999999 s)
Waiting time after start volume, e.g. reaction time after
dosing of a start volume. The waiting time can be
aborted with <QUIT>.
Measuring input (1, 2, diff.)
Inquiry only with measured quantities pH and U.
Measuring input 1 or 2 or differential amplifier;
connection of electrodes, see page 155.
With polarized electrodes, instead of the measuring
input the
polarization current (-127...127 µA)
or the
polarization potential (-1270...1270 mV, in steps of 10
mV)
is inquired.
Electrode test (OFF, ON)
Test for polarized electrodes. Performed on
changeover from the inactive state to a measurement.
"OFF" means that the test is not performed.
Titration temperature (-170.0...500.0°C).
Temperature is measured at the start of the titration if a
T sensor is connected. The value is used for
temperature compensation in pH titrations.
794 Basic Titrino
2.7 Parameters, key <PARAM>
Stop conditions for titration
If this is not "normal", i.e. after reaching the EP.
>stop conditions
stop V:
Type of stop volume (abs., rel., OFF)
"abs.":
absolute stop volume in mL.
"rel.":
relative stop volume to sample size.
"OFF":
stop volume switched off. Stop volume
is not monitored.
abs.
**titr.
stop V
99.99 ml
**titr.
factor
999999
**titr.
Statistics calculation
>statistics
mean
res.tab:
delete
794 Basic Titrino
If "rel." is set:
Factor for relative stop volume (0...±999999)
Calculated as:
Stop V (in mL) = factor ∗ sample size
Filling rate after the titration
(0.01...150 mL/min, max.)
<CLEAR> sets "max.".
The maximum rate depends on the Exchange Unit:
Exchange Unit
max.
5 mL
15 mL/min
10 mL
30 mL/min
20 mL
60 mL/min
50 mL
150 mL/min
filling rate max. ml/min
status:
If "abs." is set:
Absolute stop volume (0...9999.99 mL)
Status of statistics calculation (OFF, ON)
If the statistics calculation is switched off, the following
inquiries regarding the statistics do not appear.
OFF
n=
2
original
n=
1
Mean value calculation from n single results (2...20)
Result table (original, delete n, delete all)
"original":
The original table is used. Deleted
individual results are again incorporated in
the evaluation.
"delete n": Deletion of single results with the index n.
"delete all": The entire table is deleted.
Delete data from sample number n (1...20)
The deleted result is removed from the statistics
calculation.
39
2.7. Parameters, key <PARAM>
Preselections for the sequence
>preselections
conditioning:
display drift:
OFF
ON
cond.
req.ident:
Request of identifications after start of titration (id1,
id1&2, all, OFF)
After start, sample identifications can be requested
automatically: Only id1, id1 & id2, all three id's or no
inquiries.
OFF
Request of sample size after start of titration (value, unit,
all, OFF)
"all" the value and the unit will be requested.
OFF
Pulse output on I/O line 6 (L6, pin 1) of the remote
socket (first, all, cond., OFF)
see page 163.
cond.
activate pulse:
cond.
40
Display of drift during conditioning (ON, OFF).
Volume drift.
OFF
cond.
req.smpl size:
Automatic conditioning of titration vessel. (ON, OFF)
If conditioning is "on", between the titrations the titration
solution is constantly maintained at the (1st) end point.
When conditioning is performed, the volume drift can
be displayed during the conditioning:
794 Basic Titrino
2.7 Parameters, key <PARAM>
Titration sequence of SET
<START>
(Activate pulse)
(Start delay)
(Preconditioning)
(<START>
(Activate pulse)
(Start delay)
After the start, the activate pulse is outputted.
The start delay time is waited off.
If conditioning is on, the sample solution is titrated until
the (first) EP is reached. The display shows then
drift OK
or
SET pH
2.3 µl/min
conditioning
The vessel is now conditioned. The titration can be started
with <START>.
(Request ident.)
(Request smpl size)
The sample identifications and the sample size are requested.
The temperature is measured if a T sensor is connected.
(Start conditions)
The start volume is dispensed and pause 2 waited off.
Titration:
1 end point
2nd end point
Then the titration is performed to the first, then to the second end point.
Calculations
Calculations are carried out.
Data output
Data are outputted.
st
(Reconditioning)
794 Basic Titrino
Conditioning is carried out.
41
2.7. Parameters, key <PARAM>
Control parameters
The control parameters can be set separately for each end point. Optimize your control
parameters for routine analyses for samples with a rather low content.
During the titration, reagent dosing occurs in 3 phases:
U/mV
1. Initial dosing:
Here the dosing rate
increases constantly. The rate
starts with "min.rate" and
goes up to "max.rate".
EP
2. Continuous dosing:
Dosing is performed at the
maximum rate "max.rate" until
the control range (dynamics)
is reached.
V/mL
t/s
3. Control range (dynamics):
In this range, dosing is
performed in single steps.
The last dosing steps are
controlled by the parameter
"min.rate".
V/mL
Initial
dosing
Continuous
dosing
Control
range
Trial settings for the size of the control range
Set a large control range for steep curves. Relatively flat curves, on the other hand, need
a smaller control range. You can get an initial, good approximation for the start of the
control range from the intersection point of the tangents:
"steep curves"
"flat curves"
U/mV
Control
range
U/mV
EP
Control
range
V/mL
42
EP
V/mL
794 Basic Titrino
2.7 Parameters, key <PARAM>
Relation between the stop criteria "time" and "drift"
The stop criterion "time", t(delay), means that the end point must be exceeded for a
certain period of time. In other words, after the last dosed increment, time t is allowed to
elapse before the titration is stopped. The size of this last increment depends on the
volume of the Exchange Unit used. With a 20 mL Exchange Unit, the smallest possible
increment is 2 µL. With a t(delay) = 5 s, the last 2 µL reagent must thus suffice for 5 s or
longer. This results in a drift of ≤ 2 µL/5 s = 24 µL/min (the drift can be less than 24
µL/min as it is not known whether the last increment would also suffice for 10 s). If you
have been working up to this point with a 20 mL Exchange Unit and a t(delay) = 5 s, you
can set a value of ≤ 24 µL/min as stop drift. The following table shows several values for
the maximum stop drift.
5s
10 s
20 s
0.5 µL (5 mL)
6 µL/min
3 µL/min
1.5 µL/min
1 µL (10 mL)
12 µL/min
6 µL/min
3 µL/min
2 µL (20 mL)
24 µL/min
12 µL/min
6 µL/min
5 µL (50 mL)
60 µL/min
30 µL/min
15 µL/min
t(delay)
min.incr. (Exchange Unit)
Same t(delay) with a range of extremely small volume increments means different switchoff points. In case the stop criterion "drift" is used, the stopping point remains the same.
794 Basic Titrino
43
2.7. Parameters, key <PARAM>
If you have entered the endpoint and the control range (dynamics), the default values for
the other control parameters should suffice for the first titration. If you encounter
difficulties in optimizing your titration, the following table will be of use.
How to proceed if ...
Problem
Dosing at the end too long and
with too small increments.
"Never ends!"
Possible causes and corrective measures
• Increase "min.rate". Perform an experiment with a
much higher min.rate.
• Change switch-off criterion. Attempt, e.g. to increase
the stop drift or use a shorter t(delay) as stop
criterion.
• Possibly pass an inert gas through the titration
vessel.
"Overshoots". Titration is not
controlled, i.e. at the end single
pulses are not dosed.
• Lower "max.rate".
• Set larger control range.
• Set "min.rate" much lower.
• Optimize arrangement of electrode and buret tip and
improve stirring, see page 157. This is particularly
important with very fast titration reactions and with
steep curves.
Titration time is too long.
• Set higher "min.rate".
• Set higher "max.rate".
• Lower "dynamics".
Scatter in titration results is too
great.
44
• Set "min.rate" lower.
794 Basic Titrino
2.7 Parameters, key <PARAM>
2.7.3 Parameters for MEAS
measuring parameters
determine the measurement.
statistics:
Calculation of mean values and standard deviation,
see also page 55.
preselections:
ON/OFF of various auxiliary functions such as automatic requests after the start and activate pulse.
parameters
>measuring parameters
Measuring parameters
>measuring parameters
signal drift
OFF mV/min
Drift criterion for measured value acquisition (input
range depends on the measured quantity:
pH, U, Ipol:
0.5...999 mV/min, OFF
Upol:
0.05...99.9 µA/min, OFF
T:
0.5...999 °C/min, OFF)
<CLEAR> sets "OFF".
"OFF" means that the measured value is acquired after
a fixed equilibration time.
OFF s
Waiting time for measured value acquisition (0...9999 s,
OFF)
<CLEAR> sets "OFF".
If no new equilibration time has been entered, the
Titrino calculates an equilibration time appropriate to
the drift with the formula
equilibr.time
150
+5
Drift + 0.01
The measured value is acquired when the first criterion
(drift or time) is met. With drift and time "OFF", you will
have an "infinite" measurement.
equilibr.time (in s) =
meas.input:
1
I(pol)
1 µA
U(pol)
400 mV
electrode test:
794 Basic Titrino
OFF
Measuring input for pH and U. (1, 2, diff.)
Inquiry only with measured quantities pH and U.
Measuring input 1 or 2 or differential amplifier;
connection of electrodes, see page 155.
With polarized electrodes, instead of the measuring
input the
polarization current (-127...127 µA)
or the
polarization potential (-1270...1270 mV, in steps of 10
mV)
is inquired.
Electrode test (OFF, ON)
Test for polarized electrodes. Performed on
changeover from the inactive standby mode to a
measurement. "OFF" means that the test is not
45
2.7. Parameters, key <PARAM>
performed.
temperature
Temperature (-170.0...500.0 °C)
Temperature is measured at the start if a T sensor is
connected.
This parameter is used for temperature compensation
in pH measurements.
25.0 °C
Statistics calculation
>statistics
status:
mean
res.tab:
delete
n=
2
original
n=
1
Mean value calculation from n single results (2...20)
Result table (original, delete n, delete all)
"original":
The original table is used. Deleted
individual results are again incorporated in
the evaluation.
"delete n": Deletion of single results with the index n.
"delete all": The entire table is deleted.
Delete data from sample number n (1...20)
The deleted result is removed from the statistics
calculation.
Preselections for the sequence
>preselections
46
Status of statistics calculation (OFF, ON)
If the statistics calculation is switched off, the following
inquiries regarding the statistics do not appear.
OFF
req.ident:
OFF
Request of sample identifications after start of titration
(id1, id1&2, all, OFF)
After start, sample identifications can be inquired
automatically: Only id1, id1 & id2, all three id's or no
inquiries.
req.smpl size:
OFF
Request of sample size after start of titration (value, unit,
all, OFF)
activate pulse:
OFF
Pulse output on line "activate" (L6, pin 1) of the remote
socket (ON, OFF)
see page 163.
794 Basic Titrino
2.7 Parameters, key <PARAM>
2.7.4 Parameters for CAL
parameters
>calibration parameters
Calibration parameters
>calibration parameters
meas.input:
cal.temp.
calibration parameters
determine the calibration procedure.
statistics:
Calculation of mean values and standard deviation,
see also page 55.
1
25.0 °C
Measuring input (1, 2, diff.)
Measuring input 1 or 2 or differential amplifier;
Connection of electrodes, see page 155.
Calibration temperature (-20.0 ... 120.0 °C)
If a T sensor is connected, the temperature will be
measured.
The calibration temperature can also be input during
the calibration sequence.
pH value of first buffer (0...±20.00)
The pH value of the buffers can be put in during the
calibration sequence.
pH value of second and the following buffers
(0...±20.00, OFF)
<CLEAR> sets "OFF".
Buffers are requested until "OFF" is set. This gives an
n-point calibration. Up to 9 buffers.
A regression line will be calculated in calibrations with
more than 2 buffers.
buffer #1 pH
7.00
buffer #2 pH
4.00
buffer #3 pH
OFF
signal drift
2 mV/min
Drift for measured value acquisition (0.5...999 mV/min,
OFF)
<CLEAR> sets "OFF".
"OFF" means that the measured value is acquired after
an equilibration time.
110 s
Equilibration time (0...9999 s, OFF)
<CLEAR> sets "OFF".
If a new equilibration time has not been entered, the
Titrino calculates an equilibration time appropriate to
the drift, see page 43. The measured value is acquired
as soon as the first criterion (drift or time) has been
met.
If drift and time are both set to "OFF", the measured
value acquisition is immediate.
equilibr.time
Electrode identification (up to 8 characters).
electr.id
sample changer cal:
794 Basic Titrino
OFF
Calibration with sample changer (ON, OFF)
In calibrations with a sample changer, there are no
hold points in the calibration sequence for inputs.
Calibration temperature and pH values of the buffers
47
2.7. Parameters, key <PARAM>
Calibration temperature and pH values of the buffers
(which are temperature dependent) must therefore be
entered in advance. The inputs in key <PARAM> are
valid.
activate pulse:
Pulse output on the line "activate" (L6, pin 1) of the
remote socket (all, first, OFF)
See page 163.
OFF
Statistics calculation
>statistics
status:
mean
res.tab:
delete
48
Status of statistics calculation (OFF, ON)
If the statistics calculation is switched off, the following
inquiries regarding the statistics do not appear.
OFF
n=
2
original
n=
1
Mean value calculation from n single results (2...20)
Result table (original, delete n, delete all)
"original":
The original table is used. Deleted
individual results are again incorporated in
the evaluation.
"delete n": Deletion of single results with the index n.
"delete all": The entire table is deleted.
Delete data from sample number n (1...20)
The deleted result is removed from the statistics
calculation.
794 Basic Titrino
2.7 Parameters, key <PARAM>
Calibration sequence
<START>
(Activate pulse)
(Start delay)
Measuring cal.temp.
or
entry
Buffer 1 pH
Measuring buffer 1
Buffer 2 pH
Measuring buffer 2
etc.
Data output
794 Basic Titrino
After the start, the activate pulse is output.
The start delay time is waited off.
Then, the calibration temperature is measured.
It no T sensor is connected, you enter the temperature
manually. Store the value with <ENTER> or continue with
<START> (T is not stored).
Enter the nominal value of the first buffer.
Store the value with <ENTER> or continue with
<START> (the value is not stored).
The first buffer is measured.
Enter the nominal value of the second buffer.
Store the value with <ENTER> or continue with
<START> (the value is not stored).
Leave the calibration with <STOP> ⇒ 1 point calibration.
The second buffer is measured.
As many buffers appear as have been specified in the
<PARAM> key (up to 9).
You may leave the calibration any time with <STOP>.
Data are output.
The calibration data are available for calculation:
C46: pHas
C47: Electrode slope
Calibration data can be viewed at any time with the
<CAL.DATA> key and the calibration report printed out
using the key sequence
<PRINT><CAL.DATA><ENTER>.
49
2.7. Parameters, key <PARAM>
2.7.5 Parameters for TIP
In TIP, several commands and methods can be linked to make a titration procedure. The
TIP sequence can be defined with <DEF>, see page 62.
sequence
Parameters for the TIP sequence see page 63.
statistics:
Calculation of mean values and standard deviation,
see also page 55.
preselections:
ON/OFF of various auxiliary functions such as automatic requests after the start and activate pulse.
parameters
>sequence
Statistics calculation
>statistics
status:
mean
res.tab:
delete
n=
2
original
n=
1
Mean value calculation from n single results (2...20)
Result table (original, delete n, delete all)
"original":
The original table is used. Deleted
individual results are again incorporated in
the evaluation.
"delete n": Deletion of single results with the index n.
"delete all": The entire table is deleted.
Delete data from sample number n (1...20)
The deleted result is removed from the statistics
calculation.
Preselections for the sequence
>preselections
req.ident.:
OFF
Request of sample identifications after start (id1, id1&2,
all, OFF)
After start, sample identifications can be inquired
automatically: Only id1, id1 & id2, all three id's or no
inquiries.
req.smpl size:
OFF
Request of sample size after the start (value, unit, all,
OFF)
meas.mode:
OFF
Measured quantity (pH, U, Ipol, Upol, T, OFF)
Quantity for measurements with key <MEAS/HOLD>.
meas.input:
50
Status of statistics calculation (OFF, ON)
If the statistics calculation is switched off, the following
inquiries regarding the statistics do not appear.
OFF
1
Measuring input (1, 2, diff.)
Inquiry only with measured quantities pH and U.
Measuring input 1 or 2 or differential amplifier;
connection of electrodes, see page 155.
794 Basic Titrino
2.7 Parameters, key <PARAM>
I(pol)
1 µA
U(pol)
400 mV
electrode test:
temperature
794 Basic Titrino
OFF
25.0 °C
With polarized electrodes, inquiry of
polarization current (-127...127 µA) or
polarization potential (-1270...1270 mV, steps of 10 mV)
Electrode test (OFF, ON)
Test for polarized electrodes. Performed on
changeover from the inactive standby state to a
measurement. "OFF" means that the test is not
performed.
Temperature (-170.0...500.0 °C)
Temperature for pH compensation. Its value has to be
entered manually even if a T sensor is connected.
51
2.8. Result calculations
2.8 Result calculations
Formula entry, key <DEF>
DEF
2
(
def
>formula
Key <DEF> contains various inquiries for result
calculations and data output. The data of this key are
method specific and they are stored in the method
memory together with the method.
formula:
Formulas for result calculations.
The display texts of the Titrino are shown to the left.
The values are the default values.
>formula
Input of formulas
RS?
Enter formula number (1...9)
You can calculate up to 9 results per method.
Enter a number 1...9.
RS1=
Input of formula
Example:
RS1=EP1 ∗ C01/C00
Enter formula by means of 3rd functions of keyboard.
Here you will find operands, mathematical operations
and parentheses. Operands require a number as an
identification. You can use the following operands:
EPX: EP's. X = 1...9
RSX: Results which have already been calculated with
previous formulas. X = 1...9.
CXX: Calculation constants. XX = 00...79.
RS1=EP1*C01/C00
Rules:
• Calculation operations are performed in the
algebraic hierarchy: ∗ and / before + and -.
• Store formula with <ENTER>.
• Calculation quantities and operands can be deleted
with <CLEAR> one by one.
• To delete a complete formula press <CLEAR>
repeatedly until only RSX remains in the display.
Confirm with <ENTER>.
If a formula is stored with <ENTER>, result text,
number of decimals and result unit will be requested:
52
794 Basic Titrino
2.8 Result calculations
RS1 text
RS1
Text for result output (up to 8 characters)
Text input see page 8.
RS1 decimal places
2
Number of decimal places for result (0...5)
RS1 unit:
%
Selection of result unit (%, ppm, g/L, mg/mL, mol/L,
mmol/L, g, mg, mL, mg/pc, s, mL/min, no unit or up to
6 characters).
Enter next formula, e.g. for RS2.
Meaning of the calculation variables CXX:
C00
Sample size, see page 69.
C01...C19 Method specific operands, see page 54. They are stored with the
method in the method memory.
C21...C23 Sample specific operands, see page 69ff.
C26, 27
Mean values from silo calculations.
C30...C39 Common variables.
C40
Initial measured value of the sample, last measured value in MEAS.
C41
End volume.
C42
Determination time.
C43
Volume drift for SET with conditioning.
C44
Temperature.
C45
Dispensed start volume.
C46
Asymmetry-pH (calibration).
C47
Electrode slope (calibration).
C51...C59 Fix EP for DET and MET.
C61...C69 pK/HNP values for DET and MET.
C70...C79 Temporary variables for calculations in TIP.
794 Basic Titrino
53
2.8. Result calculations
Input method specific operands C01...C19, key <C-FMLA>
C-FMLA
1
C
With <C-FMLA> the operands C01...C19 can be put
in. For the calculation, the operands are used, which
were introduced in the formula.
The inputs method specific and are store in method
memory.
The calculation report can be printed with the key sequence:
<PRINT><SELECT>(press key repeatedly until "calc" appears in the display)<ENTER>
54
794 Basic Titrino
2.9 Statistics calculation
2.9
Statistics calculation
Mean values, absolute and relative standard deviations are calculated.
DEF
2
The <DEF> key is used to allocate results for statistics
calculation.
The entries are specific to the method and are stored in
the method memory.
(
mean:
Assigns values for statistics calculations.
def
>mean
The display texts of the Titrino are shown to the left.
The values are the default values.
Allocations for statistics calculations
>mean
Number n of single values for statistics calculation.
(1...9)
You can perform statistics calculation using up to 9
results (RSX), endpoints (EPX) or variables (CXX). For
MN1, the default value RS1 is entered.
Delete allocation with <CLEAR> + <ENTER>
MN1=RS1
MN2=
:
MN9=
Each mode has an inquiry group ">statistics" in key
<PARAM>
PARAM
Statistics calculation
>statistics
status:
mean
res.tab:
delete
794 Basic Titrino
Status of statistics calculation (OFF, ON)
If the statistics calculation is switched off, the following
inquiries regarding the statistics do not appear.
OFF
n=
2
original
n=
1
Mean value calculation from n single results (2...20)
Result table (original, delete n, delete all)
"original":
The original table is used. Deleted
individual results are again incorporated in
the evaluation.
"delete n": Deletion of single results with the index n.
"delete all": The entire table is deleted.
Delete data from sample number n (1...20)
The deleted result is removed from the statistics
calculation. )
55
2.9. Statistics calculation
How do you obtain statistics calculations?
1) Enter the allocations for the statistics calculation, see page 55.
2) Switch on the statistics calculations: Either with <STATISTICS> or set the status under
<PARAM>, "> statistics" to "ON". The "Statistics" LED is on. Storing a method in the
method memory, the status of the statistics calculation is retained.
3) Change the number of the individual values n under "mean n", if necessary.
4) Perform at least 2 titrations. The statistics calculation are constantly updated and
printed. The values are printed in the short and full result report.
5) The statistics report can be printed with <PRINT><STATISTICS><ENTER>.
Rules:
• Recalculated results are incorporated in the statistics calculation.
• If a result of a particular titration can not be calculated, no results for this determination
are incorporated in the statistics calculation. However, the sample counter is still
operative, i.e. the statistics calculation start afresh when the number of required
individual determinations has been performed.
• If the statistics are switched off ("Statistics" LED no longer on), results are no longer
entered in the statistics table. But the table remains unchanged. When the statistics
are switched on again, you can immediately continue working.
• If you delete results, all results of the determination with index n are removed from the
statistics evaluation.
• On method change, the old statistics table is cleared and the statistics instructions of
the new method followed.
• Old results in the statistics table can be deleted with "delete all" (<PARAM>,
">statistics", "res.tab:").
56
794 Basic Titrino
2.10 Common variables
2.10 Common variables
Common variables are used for:
• Determination of a titer with a method. This titer is stored permanently as C3X. The
operand C3X can be used in various other methods like any other operand.
• Determination of a blank values with a method . Using this blank value in various other
methods.
• Determination of a result with method. Reconciliation of this result in various other
methods.
You may view the values of the common variables with <CONFIG>.
DEF
2
(
def
>common variables
With <DEF>, results (RSX), endpoints (EPX), variables
(CXX) or mean values (MNX) can be allocated as
common variables.
The entries are specific to the method and are stored in
the method memory.
common variables:
Assigns values as common variables.
The display texts of the Titrino are shown to the left.
The values are the default values.
>common variables
C30=
C31
:
C39=
794 Basic Titrino
Allocation for common variables
Common variable C30...C39 (RSX, EPX, CXX, MNX)
Results (RSX), endpoints (EPX), variables (CXX), and
means (MNX) can be assigned.
The values of the common variables remain in force for
all methods until they are overwritten or deleted. They
can be viewed under the <CONFIG> key.
Delete allocation with <CLEAR>+<ENTER>.
57
2.11. Data output
2.11 Data output
Reports for the output at the end of a determination
DEF
2
(
def
>report
With <DEF>, the report sequence at the end of the
determination is defined.
The entries are specific to the method and are stored in
the method memory.
report:
Definition of report blocks to be printed automatically at
the end of the determination.
The display texts of the Titrino are shown to the left.
The values are the default values.
>report
report:
report:full;curve
Report sequence (input range depends on the mode:
DET: full, short, mplist, curve, derive, comb, scalc full,
scalc srt, param, calc, calib, ff
MET: full, short, mplist, curve, scalc full, scalc srt,
param, calc, calib, ff
SET, MEAS, CAL:
full, short, scalc full, scalc srt, param, calc, calib,
ff
TIP: full, short, scalc full, scalc srt, param, calc, ff
Select a block with <SELECT>. If you require more
than one report block, set a ";" as a delimiter between
the blocks.
Meaning of the report blocks:
full
Full result report with raw results, calculations and statistics.
short
Short result report with calculations and statistics.
mplist
Measuring point list.
curve
Titration curve (with DET and MET) or volume vs. time (with SET) or
measured value vs. time (with MEAS)
derive
1st derivative of the titration curve (with DET)
comb
Combined titration curve and 1st derivative (with DET)
scalc full Full report of silo calculations.
scalc srt
Short report of silo calculations.
param
Parameter report.
calc
Report with formulas and operands.
calib
Calibration data.
ff
Form feed on printer.
58
794 Basic Titrino
2.11 Data output
Original reports which are put out automatically at the end of the titration can be printed
with recalculated values at any time. Key sequence:
<PRINT><REPORTS><ENTER>.
Original reports have double dashes ==== at the end, whereas recalculations are
marked by single dashes ----.
Report outputs can be stopped with <QUIT>.
Example of reports:
Full result report
'fr
794 Titrino
date
01102
2002-01-03
pH(init)
time
2.88
DET pH
smpl size
0.372 g
EP1
2.083 ml
RS1
794.0010
08:54
14
********
7.64
3.80 g/L
device label
Titr 1
============
Device label (if there is a designation, see
page 23) and manual signature
sign:
'cu
794 Titrino
date
01102
2002-01-03
start V
time
0.000 ml
1.0 ml/div
08:54
DET pH
dpH=1.0/div
794.0010
Titration curve
14
********
Scaling of volume and pH axis
============
794 Basic Titrino
59
2.11. Data output
Additional possibilities for report outputs
In addition to the reports which are printed at the end of the titration, various other reports
can be put out. There are 2 possibilities to select the reports:
1) <PRINT><SELECT><ENTER> Cursor is pressed repeatedly until the desired report
appears in the display.
2) <PRINT><keyX><ENTER>
key X is the key under which the appropriate data
are entered.
List of the "keys X":
Report
Display with
<Key X>
<PRINT><SELECT>
Configuration report
configuration
CONFIG
Parameter report
parameters
PARAM
Current sample data
smpl data
SMPL DATA
Statistics report with the individual results
statistics
STATISTICS
silo
SILO
Calibration data
cal.data
CAL.DATA
Operands C01...C19
C-fmla
C-FMLA
def
DEF
user methods
USER
METH
All sample data from the silo memory
Contents of the <DEF> key
Contents of the method memory with details of
the memory requirements of the individual
methods and the remaining bytes
Calculation report with formulas and operands
Full result report
Short result report
Measuring point list (DET and MET)
Titration curve (DET and MET)
1st derivative of titration curve
Combined 1st derivative and titration curve (DET)
Full report of silo calculations
Short report of silo calculations
All reports
Complete report sequence of the last
determination, as defined under the <DEF> key
in the method
60
calc
full
short
mplist
curve
deriv
comb
scalc full
scalc srt
all
REPORTS
794 Basic Titrino
2.11 Data output
Result display without printer
Results can also be viewed in the display. With <SELECT> key, the appropriate section
(EP's, results, etc.) can be selected and <ENTER> can be used to view the individual
EP's, results etc.
<SELECT>: display
<ENTER>: display
>display results
RS1...RS9
>display EP's
EP1...EP9
>display fix EP's
C51...C59
>dispaly mean
m(RS1)...m(RS9),n
>display std.deviation
s(RS1)...d(RS2)
>display messages
>display meas.val
C40
>display calibration
pH(as) and slope
>display temp. variables
C70...C79
794 Basic Titrino
Remarks
calculated results
EP's
fix EP's (DET and MET)
mean values and number of
individual values
absolute standard deviation
various (error) messages
with MEAS
with CAL
with TIP
61
2.12. TIP, Titration procedure
2.12 TIP, Titration procedure
TIP (Titration Procedure) is used to link several commands in a sequence.
TIP is selected with <MODE> and <ENTER>. TIP is an "empty shell" in which the
sequence of the determination must be defined.
Definition of the sequence
DEF
2
With key <DEF> the TIP can be defined.
(
sequence:
Sequence of TIP.
def
>sequence
The display texts of the Titrino are shown to the left.
The values are the default values.
Sequence
>sequence
1.step:
OFF
<ENTER>
1.method:
Chloride
<ENTER>
etc.
2 x <QUIT>
62
Select a step with keys <SELECT>:
method:
Method from the user memory.
pause:
Waiting time
L4, L6 output: Set an output.
info:
Hold sequence and write a message
into the display.
stirrer
ON/OFF
Confirm the step with <ENTER> and enter the
parameter for the selected step, see below.
The request for the second step follows etc. Up to 30
steps can be selected.
On completion of the sequence definition, exit the
inquiry with <QUIT>.
794 Basic Titrino
2.12 TIP, Titration procedure
Information for the commands (steps):
Command
Meaning
Input range
method
Method from the user memory. This method runs as a
submethod.
Name
pause
Waiting time. The waiting time can be aborted with
<QUIT>.
<CLEAR> sets "inf" (= infinitely long pause time).
0...999999 s,
inf.
L4, L6 output
Set L4 output (pin 3) resp. L6 output (pin 1) of the
active,
remote socket.
inactive,
active = 0 V, inactive = 5 V, pulse > 100 ms, off =
pulse, off
output is not used.
Cable Titrino (L6) - Dosimat: 6.2139.000.
Important: A pulse (e.g. a pulse from monitoring or an
activate pulse in a submethod) can set an active output
to inactive! At the end of the TIP method, the outputs are
set to "inactive".
info
Message in the display .
The TIP sequence is held and the message displayed.
Continue the sequence with <START>, <QUIT> or
<ENTER>.
up to 16
characters
The parameters of the sequence can be viewed and changed at any time under the
<PARAM> key.
794 Basic Titrino
63
2.12. TIP, Titration procedure
Sequence of TIP
As there is no preset sequence of TIP, in what follows the procedure is illustrated by a
sequence that contains all available commands.
<START>
(Start delay)
(Request ident.)
(Request smpl size)
Submethod
Calculations
Data output
C7X
Pause
Set output
Info
64
The start delay time is waited off.
The sample identifications and the sample size
are requested.
Submethods are processed according to their
parameters. They run to completion, including
calculations and data output (e.g. curves). The
determination data of submethods are
overwritten in the next sequence step of TIP.
Those values which are needed for higher-level
calculations must therefore be assigned to
temporary variables C7X.
The pause is waited off.
Outputs on the socket "Remote" can be set.
A message can be written in the display. The
sequence is held until it is continued manually
(with <START>, <QUIT> or <ENTER>).
TIP calculations
TIP higher-level calculations are carried out.
TIP data output
Data output in TIP.
Attention: TIP contains no more determination
data, i.e. curves must be put out within the
submethods.
794 Basic Titrino
2.12 TIP, Titration procedure
Preparation of submethods for use in TIP
All titration data, i.e. curves and lists of measured points must be put out in the
submethod as they are overwritten on return to TIP.
Individual values from the submethod, e.g. endpoints or calculated results must be stored
as temporary variables C7X. This allows them to be used in TIP for further calculations.
Reevaluations of data of a submethod are not possible in TIP. The submethods should
thus be thoroughly wet tested before they are used in TIP.
Assignment of temporary variables in the submethod:
DEF
2
(
def
>temporary variables
With key <DEF> temporary variables can be
assigned.
The entries are specific to the method and are stored in
the method memory.
temporary variables
for higher-level calculations.
The display texts of the Titrino are shown to the left.
The values are the default values.
>temporary variables
C70=
C71=
:
C79=
Temporary variables
Assignment of result, endpoints or variables (RSX, EPX,
CXX)
Values of the submethod to be used in TIP
calculations.
Calculations in TIP
In TIP calculations variables C7X from different submethods can be used, formula entry
see page 52.
Note:
We recommend to execute the calculations in TIP, as they can only be recalculated in TIP
itself, e.g. with a different sample size.
794 Basic Titrino
65
2.13. Method memory, keys <USER METH>
2.13 Method memory, keys <USER METH>
USER METH
3
user methods
>recall method
)
Management of the internal method memory with key
<USER METH>.
Method identifications can be entered directly or
selected with the <SELECT> key.
recall method:
Loads a method from the internal method memory into
the working memory.
store method:
Stores the method which is in the working memory in
the internal method memory.
delete method:
Deletes a method from the internal method memory.
The display texts of the Titrino are shown to the left.
The values are the default values.
>recall method
method name:
>store method
method name:
>delete method
method name:
66
Recall method
Recall method from the internal method memory to the
working memory (input of method name, which is
included in the memory).
If a method identification is entered which is not found
in the method memory, the selected value blinks.
Store method
Store method from the working memory to the internal
method memory (up to 8 ASCII characters).
If a method with an identical name is already stored,
you are requested if you wish to overwrite the old
method. With <ENTER> it is overwritten, with <QUIT>
you return to the entry.
Delete method
Delete method from the internal method memory (input
of method name, which is included in the memory).
For safety, you are again asked if you really wish to
delete the method. With <ENTER> it is deleted, with
<QUIT> you return to the working memory.
If a method name is entered which is not found in the
method memory, the selected value blinks.
794 Basic Titrino
2.13 Method memory, keys <USER METH>
The contents of the method memory can be printed with the key sequence
<PRINT><USER METH><ENTER>
Document your methods (e.g. parameter report, def. report and C-fmla report)!
With a PC and the 6.6008.XXX Vesuv program, you should carry out a complete method
backup from time to time.
794 Basic Titrino
67
2.14. Calibration data, key <CAL.DATA>
2.14 Calibration data, key <CAL.DATA>
With <CAL.DATA>, the current pH calibration data of
all measuring inputs can be seen. Calibration data are
entered here automatically on completion of a
calibration.
CAL.DATA
5
*
input 1:
Calibration data for measuring input 1.
Identical for input 2 and diff.
cal. data
>input 1
The display texts of the Titrino are shown to the left.
The values are the default values.
pH calibration data for measuring input 1
>input 1
pH(as)
7.00
Asymmetry pH (0...±20.00)
Entered automatically after a calibration with measuring
input 1.
slope
1.000
Slope (0...±9.999)
Entered automatically after a calibration with measuring
input 1.
temp
25.0 °C
Calibration temperature (-20.0...120.0 °C)
Will be printed automatically after calibration with
measuring input 1.
cal.date
Date of last calibration (no entry possible)
If the calibration data "pH(as)" and/or "slope" are
changed by a manual entry, the date entry is deleted.
electr.id
Electrode identification of calibrated electrodes (no
entry possible)
If an electrode identification has been entered in the
CAL mode, it is automatically entered after the
calibration.
The calibration report with the current measuring input data can be printed at any time
with the key sequence
<PRINT><CAL.DATA><ENTER>.
68
794 Basic Titrino
2.15 Current sample data, key <SMPL DATA>
2.15 Current sample data, key <SMPL DATA>
The key <SMPL DATA> can be used to enter the
current sample data. The contents of this key change
when the silo memory is switched on, see page 71.
Instead of entering the current sample data with
<SMPL DATA>, you can request these data
automatically after start of determinations.
Configuration: <PARAM>, ">preselections".
Current sample data can be entered live. For working
with the silo memory see page 70.
id#1...3 or C21...C23, sample identifications:
The sample identifications can also be used as sample
specific calculation variables C21...C23.
smpl size:
Sample size.
Entry using keypad or via balance, see page 151f.
smpl unit:
Unit of the sample size.
SMPL
DATA
smpl data
>id#1 oer C21
The display texts of the Titrino are shown to the left.
The values are the default values.
Sample data
smpl data
Sample identification 1...3 or sample specific operand
C21...C23 (up to 8 characters).
Sample identifications or sample specific operands
can be entered using the keypad, via a balance with a
special input device or via barcode reader.
id#1 or C21
id#2 or C22
id#3 or C23
smpl size
smpl unit:
794 Basic Titrino
1.0 g
g
Sample size (6-digit number: ±X.XXXXX)
Entry using keypad, via balance or via barcode reader.
Unit of sample size (g, mg, mL, µL, pc, no unit or up to
5 characters)
Select unit with <SELECT>.
69
2.16. Silo memory for sample data
2.16 Silo memory for sample data
In the silo memory or pushup storage, sample data (method, identifications and smpl
size) can be stored. This is useful, e.g. when you work with Sample Changers and other
automatic sample addition systems or if you wish an overview of your determination
results, see page 74.
SILO
9
Press the key <SILO> for working with the silo
memory. The status LED "silo" is on when the silo
memory is switched on. The silo memory works by the
FIFO principle (First In, First Out).
-
If the silo memory is switched on, sample data are routed to the last free line of the silo
memory. If no new value is put in, the value from the last line is automatically copied. In
this manner, data can be simply taken over when they remain unchanged.
When the instrument is started, the sample data are fetched from the next silo line.
Organisation of the silo memory
99
1
99
2
1
2
6
35
35
Silo memory contains 35 lines.
Next free line is 36
6 of the 35 lines have been
processed. Free lines from 36 to 99
and from 1 to 6.
1 silo line needs between 18 and 120 bytes memory capacity.
Filling the silo memory with a connected balance
If the silo memory is filled from the balance, you must ensure that there is sufficient space
in the silo memory for the required number of silo lines! The number of free bytes is given
in the user memory report.
When the sample data are entered from a balance, the transfer of the sample size is
taken as the end of the silo line. You should not send data from the balance and edit the
silo memory at the same time.
For mixed operation, manual input of identifications and sample sizes from a balance, the
values from the balance are sent into the line in which editing just takes place. Confirmed
the data with <ENTER> at the Titrino.
70
794 Basic Titrino
2.16 Silo memory for sample data
Key <SMPL DATA> with the silo memory switched on
Sample data can be entered into the silo memory with
key <SMPL DATA>.
SMPL
DATA
edit silo lines:
Entering sample data into the silo memory.
delete silo lines:
Deletes single silo lines.
delete all silo lines:
Deletes the whole silo memory.
smpl data
>edit silo lines
The display texts of the Titrino are shown to the left.
The values are the default values.
Input for silo memory
>edit silo lines
silo line
1
Silo line (1...99)
The next free line is displayed automatically. Lines
already occupied can be corrected.
method:
Method with which the sample is processed (method
name from the method memory)
If no method name has been entered, the sample is
processed with the method in the working memory.
Selection of the method with <SELECT>.
id#1 or C21
Sample identification 1..3 or sample specific calculation
variables C21...C23 (up to 8 characters)
id#2 or C22
id#3 or C23
smpl size
smpl unit:
1.0 g
g
794 Basic Titrino
Unit of sample size (g, mg, mL, µL, pc, no unit or up to
5 characters)
Select unit with <SELECT>.
Delete individual silo lines
>delete silo lines
delete line n
Sample size (6-digit number: ±X.XXXXX)
The method specific limits are tested on result
calculation.
OFF
Line number of the line to be deleted(1...99, OFF)
<CLEAR> sets "OFF".
Deleted lines remain in the silo memory. Access is
blocked during the processing. To show that a line has
been deleted, they are marked with " ∗ ". The symbol ∗
indicates that the line has been deleted.
Deleted lines can be reactivated if the appropriate line
is re-edited.
71
2.16. Silo memory for sample data
Delete all silo lines
>delete all silo lines
delete all:
Confirmation (yes, no)
When all silo lines are deleted, the silo is completely
empty: The line numbering starts again with 1.
no
cycle lines:
OFF
With "ON", worked off silo lines will be copied to the
highest line of the silo memory (ON, OFF)
Data cycling "on" is useful if you constantly have to
process the same sample data. In such a case, the
processed silo line is not deleted, but copied to the
next free line, see below. If you work in this mode, you
should not enter any new silo lines during the
determinations.
save lines:
OFF
Store results in the silo memory (ON, OFF)
Determination results will be stored as C24 or C25 in
the silo memory according to the allocations in the
methods, see page 73.
"save lines" can only be set to "OFF" if the silo is
completely empty.
Silo memory with data cycling "on"
99
1
99
2
1
2
6
35
Silo memory contains 35 lines.
Next free line is 36.
72
35
41
6 of 35 lines have been processed.
The processed lines have been
copied to the end of the silo
memory: your silo is filled up to line
41.
794 Basic Titrino
2.17 Storing determination results and silo calculations
2.17 Storing determination results and silo
calculations
2.17.1
Storing determination results
If the sample-specific data of the silo memory should be kept after the determination and
supplemented by results, the following entries are necessary:
1. In the method under <DEF>
Assignment of the determination results to C24 and/or C25:
2. In the silo memory, <SMPL DATA> (when the silo memory is switched on):
"save lines: on"
Assignment of determination results
DEF
2
(
The determination results are assigned in key <DEF>.
The display texts of the Titrino are shown to the left.
The values are the default values.
def
>silo calculations
>silo calculations
C24=
C25=
Silo calculations
Assignment to C24 (RSX, EPX, CXX)
Calculated results (RSX), endpoints (EPX) or variables
CXX can be stored as C24.
Same procedure for C25.
Important:
Ensure that there is still sufficient space for storing the results C24 and C25. (In the report
<PRINT><USER METH><ENTER> the number of free bytes is shown.) Result name,
value and unit are stored. The memory requirements can be estimated as follows:
Result with text (8 characters) and unit (5 characters):
32 bytes
Measured value C40, value without unit:
22 bytes
794 Basic Titrino
73
2.17. Storing determination results and silo calculations
After several samples have been processed, the silo memory report can have the
following appearance (printout with <PRINT><SILO><ENTER>):
'si
794 Titrino
date
01102
2002-01-03
time
794.0010
08:54
14
>silo
cycle lines:
OFF
save lines:
sl method
ON
id 1/C21 id 2/C22 id 3/C23
C00
C24
C25
+ 1
11-2
A/12 94-09-12
0.233g
0.142ml/min
98.53%
+ 2
11-2
A/13 94-09-12
0.286g
0.138ml/min
95.75%
/ 3
11-2
A/14 94-09-12
0.197g
0.145ml/min 100.61%
4
11-2
A/15 94-09-12
0.288g
NV
NV
5
11-2
A/16 94-09-12
0.263g
NV
NV
processed silo
lines with
saved results
The silo lines can be marked as follows (at very left of report):
+ Silo line has been processed. It cannot be edited anymore.
* A silo line not yet processed has been deleted.
A processed silo line has been deleted and hence removed from the silo
calculations.
/
The last processed silo line. Recalculation will be considered e.g., if the sample data
of this line are changed.
No marking: The silo line is awaiting processing.
2.17.2
Silo calculations
Mean value and standard deviation of the results available in the silo memory can
subsequently be calculated over the entire series.
The following details can be entered in the method under <DEF>:
Silo calculations
>silo calculations
Assignment to C24 and C25
Calculated results (RSX), endpoints (EPX) and
variables (CXX) can be stored as C24.
Identical for C25.
C24=
C25=
match id:
74
OFF
Which sample identifications must match in order to
combine of the results (id1, id1&2, all, OFF)
"OFF" means no matching ids, all samples which have
been processed with the same method are combined,
see examples below.
794 Basic Titrino
2.17 Storing determination results and silo calculations
Starting from the following silo report:
'si
794 Titrino
date
01102
2002-01-03
time
794.0010
08:54
14
>silo
cycle lines:
OFF
save lines:
ON
sl
method
id 1/C21 id 2/C22 id 3/C23
+ 1
11-2
A/12 94-09-12
0.233g
C00
0.142ml/min
C24
C25
+ 2
0-15
A/13 94-09-12
0.286g
0.9976
+ 3
0-15
A/13 94-09-12
0.197g
0.9947
+ 4
11-2
A/12 94-09-12
0.288g
0.138ml/min
/ 5
11-2
A/15 94-09-12
0.263g
0.145ml/min 100.61%
98.53%
NV
NV
95.75%
*
Assignment
for C24 only
*
*
with "match id: off" the following silo calculation report (scalc full) is obtained:
:
method
11-2
0-15
id 1/C21 id 2/C22 id 3/C23
*
*
*
*
*
Content
* Titer
Rate
mean
+/-s
n
0.142ml/min
0.0035
3
98.30%
0.9962
2.438
3
0.00105 2
All samples
which have been
processed with
the same
method are
combined
With "match id: id1" the following silo calculation report (scalc full) is obtained:
:
method
11-2
id 1/C21 id 2/C22 id 3/C23
A/12
*
*
Rate
Content
mean
+/-s
n
0.140ml/min
0.0028
2
1.966
2
97.14%
0-15
A/13
*
* Titer
0.9962
0.00105 2
11-2
A/15
*
* Rate
Content
0.145ml/min
100.61%
0.000
0.000
1
1
Sample
processed with
the same
method and
having the same
id1 are
combined
The short silo calculation report contains only calculations for the current sample.
:
method
11-2
id 1/C21 id 2/C22 id 3/C23
A/15
*
* Rate
Content
mean
+/-s
n
0.145ml/min
100.61%
0.000
0.000
1
1
The mean values of the silo calculations are available for further result calculations as C26
and C27 and can be used in the Titrino in formulas.
Mean value of C24 ⇒ C26
Mean value of C25 ⇒ C27
Important:
• If work is performed with silo calculations, the method name must be entered in the
silo memory.
• Results will be overwritten in the silo recalculation, as long as the silo line is marked
with "/". If you do not wish such an input, e.g. because you work off an urgent sample
between a series, disconnect the silo.
794 Basic Titrino
75
2.17. Storing determination results and silo calculations
• Calculations and assignments are carried out in the following order:
1. Calculation of the results RSX
2. Assignment of temporary variables C7X for TIP
3. Calculation of means MNX
4. Assignment of silo results C24 and C25
5. Silo calculations
6. Assignment of means C26 and C27 from silo calculations
7. Assignment of common variables C3X
76
794 Basic Titrino
3.1 General rules
3 Operation via RS232 Interface
3.1 General rules
The Titrino has an extensive remote control facility that allows full control of
the Titrino via the RS 232 interface, i.e. the Titrino can receive data from an
external controller or send data to an external controller. CR and LF are used
as terminators for the data transfer. The Titrino sends 2xCR and LF as termination of a data block, to differentiate between a data line which has CR and
LF as terminators. The controller terminates its commands with CR and LF. If
more than one command per line is sent by the controller, “;” is used as a
separator between the individual commands.
The data are grouped logically and easy to understand. Thus e.g., for the selection of the dialog language, the following must be sent
&Config.Aux.Language "english"
whereby it is sufficient to only transmit the boldface characters, thus:
&C.A.L "english"
The quantities of the commands above are:
Config
configuration data
Aux
auxiliaries, various data
Language
setting the dialog language
The data are hierarchically structured (tree form). The quantities that occur in
this tree are called objects in the following. The dialog language is an object
which can be called up with the
&Config.Aux.Language
command.
If one is in the desired location in the tree, the value of the object can be queried.
&Config.Aux.Language $Q Q means Query
The query command $Q initiates the issuing of the value on the instrument
and the value emission is triggered. Entries which start with $, trigger something. They are thus called triggers.
Values of objects can not only be queried, they can also be modified. Values
are always entered in quotes, for example:
&Config.Aux.Language "english"
794 Basic Titrino
77
3.1. General rules
3.1.1 Call up of objects
An excerpt from the object tree is represented below:
3rd node
Language
2nd node
1st node
Prog
Aux
RSSet
Config
Mode
0st node
&
Root
Rules
Example
The root of the tree is designated by &.
The branches (levels) of a tree are marked with
a dot (.) when calling up an object.
When calling up an object, it is sufficient to give
only as many letters as necessary to uniquely
assign the object. If the call is not unequivocal,
the first object in the series will be recognized.
Calling up the dialog language
Upper- or lowercase letters may be used.
&C.A.L or &c.a.l
An object can be assigned a value. Values are
signified at the beginning and end by quotes (").
They may contain up to 24 ASCII characters.
Numerical values can contain up to 6 digits, a
negative sign, and a decimal point. Numbers
with more than 6 characters are not accepted;
more than 4 decimal places are rounded off. For
numbers <1, it is necessary to enter leading
zeros.
Entering the dialog language:
&C.A.L"english"
The current object remains until a new object is
called.
entry of another dialog language:
"deutsch"
&Config.Aux.Language or &C.A.L
correct entry of numbers:
"0.1"
incorrect entry of numbers
"1,5" or "+3" or ".1"
New objects can be addressed relative to the
From the root to node 'Aux': &C.A
old object:
Forward from node 'Aux' to 'Prog': .P
A preceding dot leads forwards to the next level
in the tree.
More than one preceding dot leads one level
backwards in the tree. n node backwards require n+1 preceding dots.
If you must jump back to the root, enter a preceding &.
78
Jump from node 'Prog' to node 'Aux' and select
a new object 'Language' at this level: ..L
Change from node 'Language' via the root to
node 'Mode': &M
794 Basic Titrino
3.1 General rules
3.1.2 Triggers
Triggers initiate an action on the Titrino, for example, starting a process or
sending data. Triggers are marked by the introductory symbol $.
The following triggers are possible:
$G
Go
$S
$H
$C
$Q
Stop
Hold
Continue
Query
$Q.P
$Q.H
Path
Highest
Index
Name
Detail-Info
qUit
$Q.N"i"
$D
$U
Starts processes, for ex. starting the mode run or setting the RS 232 interface
parameters
Stops processes
Holds processes
Continues processes after Hold
Queries all information from the current node in the tree forward up to and
including the values
Queries the path from the root of the tree up to the current node
Queries the number of son nodes of the current node
Queries the name of the son node with index i, i = 1 - n
Queries the detailed status information
Aborts the data flow of the instrument, for example, after $Q
The triggers $G and $S are linked to particular objects, see the summary table
page 85ff.
All other triggers can be used at any time and at all locations on the object
tree.
Examples:
Querying the value of the baud rate: &Config.RSSet.Baud $Q
Querying all values of the node "RSSet": &Config.RSSet $Q
Querying the path of the node "RSSet": &Config.RSSet $Q.P
Start mode: &Mode $G
Querying the detailed status: $D
794 Basic Titrino
79
3.1. General rules
3.1.3 Status messages
In order to have an efficient control by an external control device, it must also
be possible to query status conditions; they provide information on the status
of the Titrino. The trigger $D initiates output of the status. Status messages
consist of the global status, the detailed status and eventual error messages,
e.g. $S.Mode.SET;E26. The global status informs on the activity of the process, while the detailed status conditions show the exact activity within the
process.
$G
$H
$C
$R
$S
Go:
Hold:
Continue:
Ready:
Stop:
The following global status conditions are possible:
The Titrino is executing the last command.
The Titrino has been held ($H, key <meas/hold> or by an error which effects
the hold status)
The Titrino has been restarted actively after hold
The Titrino has executed the last command and is ready
A process has been aborted in an "unnatural manner". e.g. stopped or aborted
because there was an error.
Detailed status conditions
Status conditions of the global $G:
Instrument at the beginning or at the end of a titration.
.Req .Id1:
Instrument in the DET mode, requesting Id1 after titration start.
.Id2:
Instrument in the DET mode, requesting Id2 after titration start.
.Id3:
Instrument in the DET mode, requesting Id3 after titration start.
.Smpl: Instrument in the DET mode, requesting sample size after titration start.
.Unit: Instrument in the DET mode, requesting unit of sample size after titration
start.
.Start:
Instrument in the DET mode, processing the start conditions.
.Titr:
Instrument in the DET mode, titrating.
$G .Mode.MET...
As DET.
$G .Mode.SET .Inac:
Instrument at the beginning or at the end of a titration.
.Req .Id1:
Instrument in the SET mode, requesting Id1 after start.
.Id2:
Instrument in the SET mode, requesting Id2 after start.
.Id3:
Instrument in the SET mode, requesting Id3 after start.
.Smpl: Instrument in the SET mode, requesting sample size after start.
.Unit: Instrument in the SET mode, requesting unit of sample size after start.
.Start:
Instrument in the SET mode, processing the start conditions.
.SET1:
Instrument in the SET mode, titrating to the first endpoint.
.SET2:
Instrument in the SET mode, titrating to the second endpoint.
.Cond.Ok:
Instrument in the SET, conditioning, endpoint reached (after the first
startup from the standby mode).
.Cond.Prog: Instrument in the SET mode, conditioning, endpoint not reached
(Conditioning progressing).
$G .Mode.MEAS .Inac:
Instrument at the beginning or at the end of a titration.
.Req .Id1:
Instrument in the MEAS mode, requesting Id1 after start.
.Id2:
Instrument in the MEAS mode, requesting Id2 after start.
.Id3:
Instrument in the MEAS mode, requesting Id3 after start.
.Smpl: Instrument in the MEAS mode, requesting sample size after start.
.Unit: Instrument in the MEAS mode, requesting unit of sample size after start.
.Meas:
Instrument in the MEAS mode, measuring.
$G .Mode.CAL .Inac:
Instrument at the beginning or at the end of a calibration
.Req.Temp: Instrument in the CAL mode, requesting calibration temperature.
.Meas.Temp: Instrument in the CAL mode, measuring calibration temperature.
.Req.Buf1: Instrument in the CAL mode, requesting pH of buffer 1.
.Meas.Buf1: Instrument in the CAL mode, measures buffer 1.
$G .Mode.DET .Inac:
80
794 Basic Titrino
3.1 General rules
.Req.Buf2:
.Meas.Buf2:
etc.
$G .Assembly.Bur
.Fill:
Instrument in the CAL mode, requesting pH of buffer 2.
Instrument in the CAL mode, measures buffer 2.
Buret in filling process
in DIS mode
.ModeDis: Buret
In TIP, its global status as well as the step number (X) is available.
.Inac:
Instrument at the beginning or at the end of a TIP.
.Req .Id1:
Instrument in the TIP mode, requesting Id1 after start.
.Id2:
Instrument in the TIP mode, requesting Id2 after start.
.Id3:
Instrument in the TIP mode, requesting Id3 after start.
.Smpl: Instrument in the TIP mode, requesting sample size after start.
.Unit: Instrument in the TIP mode, requesting unit of sample size after start.
.Pause:
Instrument in the TIP mode, in pause.
.Info:
Instrument in the TIP mode, in info.
.Mode...:
Instrument in the TIP mode, working off a submethod. The detailed
status messages of the submethod appear, see above.
$G .TIP.X
Status conditions of the global $H:
The status message of the action which has been held appears.
If the process is held because a monitored limit has been violated, its status
message is $H.Mode.XXX.Titr.
Status conditions of the global $C:
The status conditions of the global $C are identical with the ones of the global
status $G. They appear when the process has been restarted actively from the
status "Hold" ($C, key <meas/hold> or automatically after elimination of an
error).
Status conditions of the global $R:
$R .Mode.XXXX.QuickMeas: Quick manual measurement from the initial status in mode XXXX.
Instrument in the DET mode, inactive.
Instrument in the MET mode, inactive.
.Mode.SET .Inac:
Instrument in the SET mode, inactive.
.Cond.Ok:
Instrument in the SET mode, conditioning, endpoint reached.
.Cond.Prog: Instrument in the SET mode, conditioning, endpoint not reached.
.Mode.MEAS .Inac:
Instrument in the MEAS mode, inactive.
.Mode.CAL .Inac:
Instrument in the CAL mode, inactive.
.Assembly.Bur.ModeDis: Buret in the DIS mode, inactive.
.TIP.Inac:
Instrument in TIP, inactive.
$R .Mode.DET .Inac:
$R .Mode.MET .Inac:
$R
$R
$R
$R
$R
Status conditions of the global $S:
$S .Mode.XXXX.QuickMeas: Quick manual measurement from the initial status in mode XXXX.
The instrument gives the status from which it has been stopped. The detailed
status information is therefore identical to for the global status $G.
Violation of monitored limits with action "end" give the status message
$S.Mode.XXX.Inac;EYYY.
794 Basic Titrino
81
3.1. General rules
3.1.4 Error messages
Error messages are added to the status messages and separated from them
by the sign ";".
E20
E21
E22
E23
E26
E27
E28
E29
E30
E31
E32
E33
E34
E36
E37
E38
E39
82
Check exchange unit.
Exit: Mount Exchange Unit (properly) or &m $S.
Check electrode, short circuit.
Exit: Rectify fault or &m $S.
Check electrode, break.
Exit: Rectify fault or &m $S.
Division by zero.
Exit: The error message disappears on next startup or on recalculation.
Manual stop.
Exit: The error message disappears on next startup.
Stop V reached in SET.
Exit: The error message disappears on next startup.
Wrong object call up
Exit: Send correct path for object. Start path at root.
Wrong value or no value allowed.
Exit: Send correct value or call up new object.
Wrong trigger, this trigger is not allowed or carrying-out of action not
possible.
Exit: Send correct trigger (exception: $D) or call up new object.
Command is not possible in active status. Repeat command in inactive
status.
Exit: Send new command.
Command is not possible during titration. Repeat command during the
conditioning phase or in inactive status.
Exit: Send new command.
Value has been corrected automatically.
Exit: Send new command.
Instrument at the end of the titration and sample data is edited; the instrument
at rest or editing during filling.
Exit: &m $S.
RS receive errors:
Parity
Exit: <QUIT> and ensure settings of appropriate parameters at
both devices are the same.
Stop Bit
Exit: <QUIT> and ensure settings of appropriate parameters at
both devices are the same.
Overrun error. At least 1 character could not be read.
Exit: <QUIT>
The internal working-off buffer of the Titrino is full (>82
characters).
Exit: <QUIT>
794 Basic Titrino
3.1 General rules
E40
E41
E42
E43
E44
E45
E120
E121
E122
E123
E124
E125
E126
E128
E129
E130
E131
E132
794 Basic Titrino
RS send errors:
DSR=OFF No proper handshake for more than 1 s.
Exit: <QUIT> Is the receiver switched on and ready to receive?
DCD=ON No proper handshake for more than 1 s.
Exit: <QUIT> Is the receiver switched on and ready to receive?
CTS=OFF No proper handshake for more than 1 s.
Exit: <QUIT> Is the receiver switched on and ready to receive?
The transmission of the Titrino has been interrupted with XOFF for
at least 6 s.
Exit: Send XON or <QUIT>
The RS interface parameters are no longer the same for both
devices. Reset.
The receive buffer of the Titrino contains an incomplete command
(LF missing). Sending from the Titrino is therefore blocked.
Exit: Send LF or <QUIT>.
Overrange of the primary measured value (pH, U, Ipol, Upol or T
with MEAS T). The secondary measured value (temperature) may
be instable as well.
Exit: Correct error or &m $S.
Measuring point list overflow (more than 500 measuring points).
Exit: The error message disappears on next startup.
EP overflow.
Exit: The error message disappears on next startup or on
recalculation.
Missing EP for calculation.
Exit: The error message disappears on next startup or on
recalculation.
Number of EP does not correspond with the set windows.
Exit: The error message disappears on next startup or on
recalculation.
Missing fix EP for calculation, has not been defined.
Exit: The error message disappears on next startup or on
recalculation.
Fix-EP outside of measuring point list.
Exit: The error message disappears on next startup or on
recalculation.
No new mean.
Exit: The error message disappears on next startup or on
recalculation.
No new common variable, old value remains.
Exit: The error message disappears on next startup or on
recalculation.
Wrong sample. For SET with preset titration direction the first
measured value lies behind the endpoint.
Exit: The error message disappears on next startup.
No EP set for SET.
Exit: The error message disappears on next startup.
Silo empty and it has been started with open silo or empty silo has
been opened.
Exit: Send a silo entry.
83
3.1. General rules
E133
E134
E135
E136
E137
E155
E157
E158
E160
E161
E166
E172
84
Silo full.
Exit: Send new command.
No method. A method, which is required from the silo memory or in TIP, does
not exist.
Exit: The error message disappears on next startup.
Check temp.sensor in MEAS T.
Exit: Correct error or &m $S.
Same buffer in CAL. Measured value of the second buffer differs less than 6
mV from the measured value of the first buffer.
Exit: Correct error or &m $S.
XXX Bytes are missing so that the method, the silo line could not be stored or
not enough RAM for running TIP.
Exit: Send new command.
No new silo result (C24 or C25).
Exit: The error message disappears on next start or on recalculation.
No sequence defined in TIP.
Exit. The error message disappears on next start.
A second TIP has been called up in TIP.
Exit: The error message disappears on next start.
No new temporary variable.
Exit: The error message disappears on next start.
Measurement range of the secondary measured value (temperature)
exceeded. The primary measured value (pH, U, Ipol, Upol) can also be
unstable.
Exit: Rectify error or &m $S.
Save lines is "OFF" although a submethod of TIP includes an assignment to
C24 or C25.
Exit: The error message disappears on next start. Attention: The data of this
sample will not be stored.
In TIP, a QuickMeas was started, without defining a measuring quantity.
Exit: The error message disappears on next start or &Mode.QuickMeas $S.
794 Basic Titrino
3.2 Remote control commands
3.2 Remote control commands
3.2.1 Overview
The internal object tree can be divided into the following branches:
&
├ Mode
├ UserMeth
├ Config
├ SmplData
├ Info
├ Assembly
├ Setup
└ Diagnose
794 Basic Titrino
Root
Method parameters
Administration of the internal user-memory for methods
Instrument configuration
Sample specific data
Current Data
Component data
Setting the operating mode
Diagnostics program
85
3.2. Remote control commands
&Mode
Object
Description
& Root
├ Mode
: ├ .QuickMeas
├ .Select
Mode
Rapid meas. in basic mode
Mode selection
│
├ .DETQuantity
├ .METQuantity
├ .SETQuantity
├ .MEASQuantity
├ .Name
├ .Parameter*
│
├ .Def
│ ├ .Formulas
│ │ ├ .1
│ │ │ ├ .Formula
│ │ │ ├ .TextRS
│ │ │ ├ .Decimal
│ │ │ ├ .Unit
│ │ │ :
│ ├ .SiloCalc
│ │ ├ .Assign
│ │ │ ├ .C24
│ │ │ ├ .C25
│ │ ├ .MatchId
│ ├ .ComVar
│ │ ├ .C30
│ │ ├ up to C39
│ ├ .Report
│ │ ├ .Assign
│ ├ .Mean
│ │ ├ .1
│ │ │ ├ .Assign
│ │ │ up to 9
│ ├ .TempVar
│ │ ├ .C70
│ │ ├ up to C79
├ .CFmla
│ ├ .1
│ │ ├ .Value
│ ├ up to C19
86
Input range
$G, $S, $H, $C
$G, $S
DET,MET,SET,
MEAS,CAL,TIP
Measured quantity for DET
pH, U, Ipol, Upol
Measured quantity for MET
pH, U, Ipol, Upol
Measured quantity for SET
pH, U, Ipol, Upol
Measured quantity for MEAS
pH, U, Ipol, Upol, T
Name of current method
read only/read+write
Parameter of current mode, page 87ff
Definitions for data output
Calculation formulas
for result 1
Calculation formula
Text for result output
Number of decimal places
Unit for result output
up to 9 results
Silo calculations
Assignment
Store as variable C24
Store as variable C25
Matching of Id's
Assignment of common variables
for C30
Reference
3.2.2.1.
3.2.2.2.
3.2.2.3.
ditto
ditto
ditto
ditto
3.2.2.4.
special
up to 8 ASCII char
0...2...5
up to 6 ASCII char
3.2.2.5.
ditto
ditto
ditto
RSX,EPX,CXX
RSX,EPX,CXX
id1, id1&2, all, OFF
3.2.2.6.
ditto
ditto
RSX,EPX,CXX,MNX
3.2.2.7.
Reports at the end of determination
Assignment
depends on mode
Assignment for mean calculation
MN1
Input of variable
RSX, EPX, CXX
3.2.2.8.
3.2.2.9.
Assignment of temporary variables
for C70
RSX,EPX,CXX
3.2.2.10.
Calculation constants
Calculation constant C01
Input of value
3.2.2.11.
0...±999 999
794 Basic Titrino
3.2 Remote control commands
*Parameter
├ .TitrPara
│ ├ .MptDensity
│ ├ .MinIncr
│ ├ .DosRate
│ ├ .SignalDrift
│ ├ .UnitSigDrift
│ ├ .EquTime
│ ├ .StartV
│ │ ├ .Type
│ │ ├ .V
│ │ ├ .Factor
│ │ ├ .Rate
│ ├ .Pause
│ ├ .MeasInput
│ ├ .Ipol
│ ├ .Upol
│ ├ .PolElectrTest
│ ├ .Temp
│
├
│
│
│
│
│
│
│
│
│
├
│
│
│
│
│
│
├
│
│
│
│
│
│
│
│
│
│
│
│
├
│
│
│
.StopCond
├ .VStop
│ ├ .Type
│ ├ .V
│ ├ .Factor
├ .MeasStop
├ .UnitMStop
├ .EPStop
├ .FillRate
.Statistics
├ .Status
├ .MeanN
├ .ResTab
│ ├ .Select
│ ├ .DelN
Tree part "Parameters for DET"
Titration parameters
Measuring point density
Minimum increment
Dispensing rate for increments
Drift for meas. value acquisition
Unit of measured value drift
Equilibrium time
Start volume
Type of start volume
Volume for absolute start volume
Factor for relative start volume
Dispensing rate for start volume
Waiting time
Measuring input
Polarization current
Polarization voltage
Test for polarized electrodes
Titration temperature
abs., rel., OFF
0...999.99
0...±999 999
0.01...150.0, max.
0...999 999
1, 2, diff.
0...1...±127
0...400...±1270
ON, OFF
-170.0...25.0...500.0
3.2.2.15.
ditto
ditto
ditto
3.2.2.16.
3.2.2.17.
ditto
ditto
ditto
3.2.2.18.
Stop conditions
Stop volume
Type of stop volume
Volume for absolute stop volume
Factor for relative stop volume
Stop measured value pH, U, I
Unit of stop measured value
Stop after a number of EP's
Filling rate
abs., rel., OFF
0...99.99...9999.99
0...±999 999
depends on meas.quant.
read only
1...9, OFF
0.01...150.0, max.
3.2.2.19.
ditto
ditto
3.2.2.20.
ditto
3.2.2.21.
3.2.2.22.
ON, OFF
2...20
3.2.2.23.
ditto
Statistics
Status of statistics calculation
No. of individual determinations
Result table
Deletion of individual results
.Evaluation
├
├
│
│
│
│
│
├
│
│
├
Evaluation
.EPC
EP criterion
.Recognition
EP recognition
├ .Select
Type of EP recognition
├ .Window
Window
│ ├ .1
up to 9 windows
│ │ ├.LowLim Lower limit window 1
│ │ ├.UpLim
Upper limit window 1
.FixEP
Fix endpoints
├ .1
up to 9 fix EP's
│ ├.Value
Measured value for fix EP1
.pK pK or HNP evaluation
.Presel
├
├
├
.IReq
.Sreq
.ActPulse
794 Basic Titrino
Preselections
Request of Id's after start
Request of smpl size after start
Output of a pulse
0...4...9
3.2.2.12.
0...10.0...999.9
ditto
0.01...150.0, max.
3.2.2.13.
depends on meas.quant. 3.2.2.14.
read only
ditto
0...26...9999, OFF
ditto
original,delete n,delete all
1...20
0...5...200
ditto
ditto
3.2.2.24.
all,greatest,last,window,OFF
ditto
depends on meas.quant.
depends on meas.quant.
ditto
ditto
depends on meas.quant.
ON, OFF
ditto
ditto
id1, id1&2, all, OFF
value, unit, all, OFF
ON, OFF
3.2.2.25.
ditto
3.2.2.26.
87
3.2. Remote control commands
*Parameter
├ .TitrPara
│ ├ .VStep
│ ├ .DosRate
│ ├ .SignalDrift
│ ├ .UnitSigDrift
│ ├ .EquTime
│ ├ .StartV
│ │ ├ .Type
│ │ ├ .V
│ │ ├ .Factor
│ │ ├ .Rate
│ ├ .Pause
│ ├ .MeasInput
│ ├ .Ipol
│ ├ .Upol
│ ├ .PolElectrTest
│ ├ .Temp
│
├
│
│
│
│
│
│
│
│
│
├
│
│
│
│
│
│
├
│
│
│
│
│
│
│
│
│
│
│
│
├
│
│
│
88
.StopCond
├ .VStop
│ ├ .Type
│ ├ .V
│ ├ .Factor
├ .MeasStop
├ .UnitMStop
├ .EPStop
├ .FillRate
.Statistics
├ .Status
├ .MeanN
├ .ResTab
│ ├ .Select
│ ├ .DelN
Tree part "Parameters for MET"
Titration parameters
Volume increment
Dispensing rate for increments
Drift for meas. value acquisition
Unit of measured value drift
Equilibrium time
Start volume
Type of start volume
Volume for absolute start volume
Factor for relative start volume
Dispensing rate for start volume
Waiting time
Measuring input
Polarization current
Polarization voltage
Test for polarized electrodes
Titration temperature
abs., rel., OFF
0...999.99
0...±999 999
0.01...150.0, max.
0...999 999
1, 2, diff.
0...1...±127
0...400...±1270
ON, OFF
-170.0...25.0...500.0
3.2.2.15.
ditto
ditto
ditto
3.2.2.16.
3.2.2.17.
ditto
ditto
ditto
3.2.2.18.
Stop conditions
Stop volume
Type of stop volume
Volume for absolute stop volume
Factor for relative stop volume
Stop measured value pH, U, I
Unit of stop measured value
Stop after a number of EP's
Filling rate
abs., rel., OFF
0...99.99...9999.99
0...±999 999
depends on meas.quant.
read only
1...9, OFF
0.01...150.0, max.
3.2.2.19.
ditto
ditto
3.2.2.20.
ditto
3.2.2.21.
3.2.2.22.
ON, OFF
2...20
3.2.2.23.
ditto
Statistics
Status of statistics calculation
No. of individual determinations
Result table
Deletion of individual results
.Evaluation
├
├
│
│
│
│
│
├
│
│
├
Evaluation
.EPC
EP criterion
.Recognition
EP recognition
├ .Select
Type of EP recognition
├ .Window
Window
│ ├ .1
up to 9 windows
│ │ ├.LowLim Lower limit window 1
│ │ ├.UpLim
Upper limit window 1
.FixEP
Fix endpoints
├ .1
up to 9 fix EP's
│ ├.Value
Measured value for fix EP1
.pK pK or HNP evaluation
.Presel
├
├
├
.IReq
.SReq
.ActPulse
Preselections
Request of Id's after start
Request of sample size after start
Output of a pulse
0...0.10...999.9
3.2.2.12.
0.01...150.0, max.
3.2.2.13.
depends on meas.quant. 3.2.2.14.
read only
ditto
0...26...9999, OFF
ditto
original,delete n,delete all
1...20
ditto
ditto
depends on meas.quant. 3.2.2.24.
all,greatest,last,window,OFF
ditto
depends on meas.quant.
depends on meas.quant.
ditto
ditto
depends on meas.quant.
ON, OFF
ditto
ditto
id1, id1&2, all, OFF
value, unit, all, OFF
ON, OFF
3.2.2.25.
ditto
3.2.2.26.
794 Basic Titrino
3.2 Remote control commands
*Parameter
├ .SET1
│ ├ .EP Endpoint 1
│ ├ .UnitEp
│ ├ .Dyn
│ ├ .UnitDyn
│ ├ .MaxRate
│ ├ .MinRate
│ ├ .Stop
│ │ ├ .Type
│ │ ├ .Drift
│ │ ├ .Time
│ │ ├ .StopT
├ .SET2
├ .TitrPara
│ ├ .Direction
│ ├ .Start V
│ │ ├ .Type
│ │ ├ .V
│ │ ├ .Factor
│ │ ├ .Rate
│ ├ .Pause
│ ├ .MeasInput
│ ├ .Ipol
│ ├ .Upol
│ ├ .PolElectrTest
│
│ ├ .Temp
├ .StopCond
│ ├ .VStop
│ │ ├ .Type
│ │ ├ .V
│ │ ├ .Factor
│
│ ├ .FillRate
├ .Statistics
│ ├ .Status
│ ├ .MeanN
│ ├ .ResTab
│ │ ├ .Select
│
│ │ ├ .DelN
├ .Presel
│ ├ .Cond
│ ├ .DriftDisp
│ ├ .IReq
│ ├ .SReq
│ ├ .ActPulse
794 Basic Titrino
Tree part "Parameters for SET"
Control parameters for EP1
depends on meas.quant. 3.2.2.27.
Unit of endpoint
read only
ditto
Dynamics
depends on meas.quant. 3.2.2.28.
Unit of dynamics
read only
ditto
Maximum dosing rate
0.01...10...150, max.
ditto
Minimum dosing rate
0.01...25.0...9999
ditto
Titration stop
Type of stop criterion
drift, time
3.2.2.29.
Stop drift
1...20...999
ditto
Switch-off delay time
0...10...999, inf
ditto
Stop time
0...999 999, OFF
ditto
Control parameters for EP2, as for EP1
Titration parameters
Titration direction
+, -, auto
3.2.2.30.
Start volume
Type of start volume
abs., rel., OFF
3.2.2.15.
Volume for absolute start volume
0...999.99
ditto
Factor for relative start volume
0...±999 999
ditto
Dispensing rate for start volume
0.01...150.0, max.
ditto
Waiting time after start volume
0...999 999
3.2.2.16.
Measuring input
1, 2, diff.
3.2.2.17.
Polarization current
0...1...±127
ditto
Polarization voltage
0...400...±1270
ditto
Test for polarized electrodes
ON, OFF
ditto
Titration temperature
-170.0...25.0...500.0
3.2.2.18.
Stop conditions
Stop volume
Type of stop volume
abs., rel., OFF
3.2.2.19.
Volume for absolute stop volume
0...99.99...9999.99
ditto
Factor for relative stop volume
0...±999 999
ditto
Filling rate
0.01...150.0, max.
3.2.2.22.
Statistics
Status of statistics calculation
ON, OFF
3.2.2.23.
No. of individual determinations
2...20
ditto
Result table
original,delete n,delete all
ditto
Deletion of individual results
1...20
ditto
Preselections
Conditioning
ON, OFF
3.2.2.31.
Display of drift during cond.
ON, OFF
ditto
Request of Id's after start
id1, id1&2, all, OFF
3.2.2.25.
Request of smpl size after start
value, unit, all, OFF
ditto
Output of a pulse
first, all, cond., OFF
3.2.2.26.
89
3.2. Remote control commands
*Parameter
├ .Measuring
│ ├ .SignalDrift
│ ├ .UnitSigDrift
│ ├ .EquTime
│ ├ .MeasInput
│ ├ .Ipol
│ ├ .Upol
│ ├ .PolElectrTest
│ ├ .Temp
│
├
│
│
│
│
│
│
├
│
│
│
│
.Statistics
├ .Status
├ .MeanN
├ .ResTab
│ ├ .Select
│ ├ .DelN
│
.Presel
├
├
├
.IReq
.SReq
.ActPulse
*Parameter
.Calibration
├ .MeasInput
├ .CalTemp
├ .Buffer
│ ├ .1
│ │ ├ .Value
│ ├ .2
│ │ ├ .Value
│ ├ :
├ .SignalDrift
├ .EquTime
├ .ElectrodeId
├ .SmplChanger
├ .ActPulse
├
│
│
│
│
│
│
│
│
│
│
│
│
│
│
├
│
│
│
│
│
90
│
.Statistics
├ .Status
├ .MeanN
├ .ResTab
│ ├ .Select
│ ├ .DelN
Tree part "Parameters for MEAS"
Measuring parameters
Drift for meas.value acquisition
Unit of measured value drift
Equilibrium time
Measuring input
Polarization current
Polarization voltage
Test for polarized electrodes
Titration temperature
Statistics
Status of statistics calculation
No. of individual determinations
Result table
depends on meas.quant. 3.2.2.32.
read only
ditto
0...9999, OFF
ditto
1, 2, diff.
3.2.2.33.
0...1...±127
ditto
0...400...±1270
ditto
ON, OFF
ditto
-170.0...25.0...500.0
3.2.2.34.
ON, OFF
2...20
3.2.2.23.
ditto
Deletion of individual results
original,delete n,delete all
1...20
Preselections
Request of Id's after start
Request of sample size after start
Output of a pulse
id1, id1&2, all, OFF
value, unit, all, OFF
ON, OFF
3.2.2.25.
ditto
3.2.2.26.
Tree part "Parameters for CAL"
Calibration parameters
Measuring input
Calibration temperature
1, 2, diff.
-20.0...25.0...120.0
3.2.2.35.
3.2.2.36.
pH value of buffer 1
0...7.00...±20.00
3.2.2.37.
pH value of buffer 2
up to 9 buffers
Drift for meas.value acquisition
Equilibrium time
Electrode identification
Calibration on a Titrino
Output of a pulse
0...4.00...±20.00, OFF
Statistics
Status of statistics calculation
No.of individual determinations
Result table
Deletion of individual results
ditto
ditto
ditto
depends on meas.quant.
0...110...9999, OFF
8 ASCII char.
ON, OFF
first, all, OFF
3.2.2.38.
ditto
3.2.2.39.
3.2.2.40.
3.2.2.41.
ON, OFF
2...20
3.2.2.23.
ditto
original,delete n,delete all
1...20
ditto
ditto
794 Basic Titrino
3.2 Remote control commands
*Parameter
├ .Sequence
│ ├ .1
│ │ ├ .Select
│
│
│
│
│
│
│
├
│
│
│
│
│
│
├
│
│
│
│
│
│
│
│
│
│
│
│
│
│
│
├
├
├
├
├
.Method
.Pause
.L4Output
.L6Output
.Info
.Statistics
├ .Status
├ .MeanN
├ .ResTab
│ ├ .Select
│ ├ .DelN
│
.Presel
├
├
├
├
├
├
├
├
.IReq
.SReq
.MeasMode
.MeasInput
.Ipol
.Upol
.PolElectrTest
.Temp
794 Basic Titrino
Tree part "Parameters for TIP"
Sequence
Step 1
Step selection
Method from memory
Waiting time
Line L4
Line L6
Display information
Statistics
Status of statistics calculation
No. of individual determinations
Result table
method,pause,L4 output,L6 output,
info, OFF
3.2.2.42.
special
3.2.2.43.
0...999 999, INF
ditto
active,inactive,pulse,OFF
ditto
active,inactive,pulse,OFF
ditto
up to 16 ASCII char.
ditto
ON, OFF
2...20
Deletion of individual results
original,delete n,delete all
1...20
Preselections
Request of Id's after start
Request of sample size after start
Measuring mode for man.meas.
Measuring input
Polarization current
Polarization voltage
Test for polarized electrodes
Titration temperature
id1, id1&2, all, OFF
value, unit, all, OFF
pH,U,Ipol,Upol,T,OFF
1, 2, diff.
0...1...±127
0...400...±1270
ON, OFF
-170.0...25.0...500.0
3.2.2.23.
ditto
ditto
ditto
3.2.2.25.
ditto
3.2.2.44.
ditto
ditto
ditto
ditto
ditto
91
3.2. Remote control commands
&UserMeth
Object
Description
Input range
Reference
& Root
:
├ UserMeth
: ├ .FreeMemory
├ .Recall
│ ├ .Name
├ .Store
│ ├ .Name
├ .Delete
│ ├ .Name
├ .DelAll
├ .List
│ ├ .1
│ │ ├ .Name
│ │ ├ .Mode
│ │ ├ .Quantity
│ │ ├ .Bytes
│ │ ├ .Checksum
├ .2
92
Method memory
Memory available
Load method
Method name
Save method
Method name
Delete method
Method name
Delete all methods
List of methods
Method 1
Method name
Mode
Measured quantity
Method size in bytes
Checksum of method
for each method
read only
$G
8 ASCII characters
$G
8 ASCII characters
$G
8 ASCII characters
$G
3.2.2.45.
3.2.2.46.
ditto
ditto
ditto
ditto
ditto
ditto
read only
read only
read only
read only
read only
3.2.2.47.
ditto
ditto
ditto
ditto
794 Basic Titrino
3.2 Remote control commands
&Config
Object
Description
Input range
Reference
& Root
:
├
Config
├ .PeriphUnit
│ ├ .CharSet1
│ │
│ ├ .Balance
│ │
│ ├ .Plot
│ │
│
├ .Aux
│ ├ .Language
│ │
│ │
│ ├ .Set
│ │ ├ .Date
│ │ ├ .Time
│ ├ .RunNo
│ ├ .AutoStart
│ ├ .StartDelay
│ ├ .DevName
│ ├ .Prog
│
├ .RSSet
│ ├ .Baud
│ │
│ ├ .DataBit
│ ├ .StopBit
│ ├ .Parity
│ ├ .Handsh
│ │
│
├ .ComVar
│ ├ .C30
│ ├ up to C39
│
794 Basic Titrino
Instrument configuration
Selection of peripheral units
External printer
Selection of balance
Selection of plot at analog output
Miscellaneous
Dialog language
Setting of date and time
Date
Time
Run number
Automatic start
Start delay time
Device label
Program version
Settings RS232
Baud rate
Number of data bits
Number of stop bits
Parity
Handshake
Values of common variables
C30
0... ±999 999
Epson,Seiko,Citizen
IBM,HP
3.2.2.48.
Sartorius,Mettler,Mettler AT
AND,Precisa
3.2.2.49.
U, dU/dt, V, dV/dt
U(rel), T
ditto
english, deutsch,
francais, espanol, italiano,
portugese, svenska
3.2.2.50.
$G
3.2.2.51.
XXXX-XX-XX
XX:XX
0...9999
3.2.2.52.
1...9999, OFF
3.2.2.53.
0...999 999
3.2.2.54.
8 ASCII char.
3.2.2.55.
read only
3.2.2.56.
$G
3.2.2.57.
300,600,1200,2400,4800,
9600
7, 8
ditto
1, 2
ditto
even, odd, none
ditto
HWs, HWf, SWchar,
SWline, none
ditto
0... ±999 999
3.2.2.58.
93
3.2. Remote control commands
&SmplData
Object
Description
Input range
Reference
& Root
:
├ SmplData
: ├ .Status
├ .OFFSilo
│ ├ .Id1
│ ├ .Id2
│ ├ .Id3
│ ├ .ValSmpl
│ ├ .UnitSmpl
├ .ONSilo
│ ├ .Counter
│ │ ├ .MaxLines
│ │ ├ .FirstLine
│ │ ├ .LastLine
│ ├ .EditLine
│ │ ├ .1
│ │ │ ├ .Method
│ │ │ ├ .Id1
│ │ │ ├ .Id2
│ │ │ ├ .Id3
│ │ │ ├ .ValSmpl
│ │ │ ├ .UnitSmpl
│ │ │ ├ .C24
│ │ │ ├ .C25
│ │ │ ├ .Mark
│ │ ├ up to 99 lines
│ ├ .DelLine
│ │ ├ .LineNum
│ ├ .DelAll
│ ├ .CycleLines
│ ├ .SaveLines
94
Sample data
Status of silo memory
Current sample data
Sample identification 1
Sample identification 2
Sample identification 3
Sample size
Unit of sample size
Current sample data
Counter of silo memory
Maximum lines
First line
Last line
Editing silo lines
1st silo line
Method name
Sample identification 1
Sample identification 2
Sample identification 3
Sample size
Unit of sample size
Value of variable C24
Value of variable C25
Mark of silo line
Delete silo line
Line number
Delete silo line
Cycle lines
Save results
ON, OFF
3.2.2.59.
up to 8 ASCII char
up to 8 ASCII char
up to 8 ASCII char
±X.XXXXX
up to 5 ASCII char
3.2.2.60.
ditto
ditto
ditto
ditto
read only
read only
read only
3.2.2.61.
ditto
ditto
up to 8 ASCII char
up to 8 ASCII char
up to 8 ASCII char
up to 8 ASCII char
±X.XXXXX
up to 5 ASCII char
read only
read only
read only
3.2.2.62.
ditto
ditto
ditto
ditto
ditto
ditto
ditto
ditto
$G
1...99, OFF
$G
ON, OFF
ON, OFF
3.2.2.63.
ditto
3.2.2.64.
3.2.2.65.
3.2.2.66.
794 Basic Titrino
3.2 Remote control commands
&Info
Object
Description
Input range
Reference
& Root
:
├ Info
Current data
: ├ .Report
Transmission of formatted reports $G
3.2.2.67.
│ ├ .Select
Report type
configuration, parameters,
│
smpl data, statistics, silo, calib
│
C-fmla, def, user method, full,
│
short, mplist, curve, derive, comb,
│
scalc full, scalc srt, calc,
│
all, ff
ditto
│
├ .CalibrationData
pH calibration data
$G
3.2.2.68.
│ ├ .Inp1
For measuring input 1
│ │ ├ .pHas
Asymmetry pH
0...7.00...±20.00
ditto
│ │ ├ .Slope
Slope of electrode
0...1.000...±9.999
ditto
│ │ ├ .Temp
Calibration temperature
-170.0...25.0...500.0
ditto
│ │ ├ .Date
Date of calibration
read only
ditto
│ │ ├ .ElectrodeId Id of the calibrated electrode
read only
ditto
│ ├ .Inp2
For measuring input 2, as for input 1
│ ├ .Diff
For differential input, as for input 1
│
├ .Checksums
Checksums
$G
3.2.2.69.
│ ├ .MPList
Checksum of meas.point list
read only
ditto
│ ├ .ActualMethod Checksum of current method
read only
ditto
│
├ .DetermData
Determination data
$G
3.2.2.70.
│ ├ .Write
Read/write for several nods
ON, OFF
│ ├ .ExV
Volume of Exchange/Dosing unit
read only/read+write
ditto
│ ├ .MPList
Measuring point list
│ │ ├ .1
Measuring point 1
│ │ │ ├ .Attribute Attribute
read only/read+write
ditto
│ │ │ ├ .X
X coordinate
read only/read+write
ditto
│ │ │ ├ .Y
Y coordinate
read only/read+write
ditto
│ │ │
for each measuring point
│
├ .TitrResults
Titration results
│ ├ .RS
Calculated results
│ │ ├ .1
1st result
│ │ │ ├ .Value
Value
read only
3.2.2.71.
│ │ ├ up to 9 results
│
│
│
│
│
│
│
│
│
│
│
│
├ .EP
│ ├ .1
│ │ ├ .V
│ │ ├ .Meas
│ │ ├ .Mark
│ ├ up to 9 EP's
├ .Var
│ ├ .C40
│ ├ .C41
│ ├ .C42
│ ├ .C43
│ ├ .C44
794 Basic Titrino
"Info", continuation
Endpoint
1st result
Value
read only
Measured value
read only
Mark if more than 1 EP per window read only
Variables C4X
Start measured value
Titration end volume
Titration time
Volume drift in SET
Titration temperature
read only/read+write
read only/read+write
read only/read+write
read only/read+write
read only/read+write
ditto
ditto
95
3.2. Remote control commands
│ │ ├ .C45
Start volume
│ │ ├ .C46
Asymmetry pH
│ │ ├ .C47
Slope of electrode
│ ├ .FixEP
Fix EP
│ │ ├ .51
C51
│ │ │ ├ .Value
Value
│ │ │
up to 59
│ ├ .pK
pK/HNP
│ │ ├ .61
C61
│ │ │ ├ .Value
Value
│ │ │
up to 69
│ ├ .TempVar
Temporary variables C7X
│ │ ├ .C70
up to C79
│
├ .StatisticsVal
Statistics values
│ ├ .ActN
Number of results in chart
│ ├ .1
1st mean
│ │ ├ .Mean
Mean
│ │ ├ .Std
Absolute standard deviation
│ │ ├ .RelStd
Relative standard deviation
│ ├ up to 9 mean values
│
├ .SiloCalc
Values of silo calculations
│ ├ .C24
Values of variable C24
│ │ ├ .Name
Name
│ │ ├ .Value
Value
│ │ ├ .Unit
Unit
│ ├ .C25
as for C24
│ ├ .C26
Values of variable C26
│ │ ├ .ActN
Number of single values
│ │ ├ .Mean
Mean value
│ │ ├ .Std
Absolute standard deviation
│ │ ├ .RelStd
Relative standard deviation
│ ├ .C27
as for C26
│
"Info", continuation
├ .ActualInfo
Current data
│ ├ .Inputs
I/O Inputs
│ │ ├ .Status
Line status
│ │ ├ .Change
Change of line status
│ │ ├ .Clear
Clear change
│ ├ .Outputs
as for I/O Inputs
│ ├ .Assembly
From Assembly
│ │ ├ .CyclNo
Cycle number
│ │ ├ .Counter
Assembly counter
│ │ │ ├ .V
Volume counter
│ │ │ ├ .Clear
Clears counter
│ │ ├ .Meas
Measured value
│ ├ .Titrator
From Titrator
│ │ ├ .CyclNo
Cycle number
│ │ ├ .V
Volume
│ │ ├ .Meas
Measured indicator voltage
│ │ ├ .dVdt
Volume drift dV/dt
│ │ ├ .dMeasdt
Measured value drift
│ │ ├ .dMeasdV
1st deviation of titration curve
│ │ ├ .ERC
ERC from DET
│ ├ .MeasPt
Entry in measuring point list
│ │ ├ .Index
Index of entry
│ │ ├ .X
X coordinate
96
read only/read+write
read only
read only
read only
3.2.2.72.
read only
ditto
read only/read+write
ditto
read only
3.2.2.73.
read only
read only
read only
ditto
ditto
ditto
read only
read only
read only
3.2.2.74.
ditto
ditto
read only
read only
read only
read only
ditto
ditto
ditto
ditto
read only
read only
$G
3.2.2.75.
ditto
ditto
ditto
read only
read only
read only
$G
read only
3.2.2.76.
3.2.2.77.
ditto
ditto
3.2.2.78.
read only
read only
read only
read only
read only
read only
read only
3.2.2.79.
ditto
ditto
ditto
ditto
ditto
ditto
read only
read only
3.2.2.80.
ditto
794 Basic Titrino
3.2 Remote control commands
│ │ ├ .Y
│ ├ .EP
│ │ ├ .Index
│ │ ├ .X
│ │ ├ .Y
│ ├ .Display
│ │ ├ .L1
│ │ ├ .L2
│
├ .Assembly
│ ├ CycleTime
│ ├ ExV
794 Basic Titrino
Y coordinate
EP entry
Index of entry
X coordinate
Y coordinate
Display
Text line 1
Text line 2
read only
ditto
read only
read only
read only
ditto
ditto
ditto
up to 24 ASCII char
up to 24 ASCII char
3.2.2.81.
ditto
Assembly
Cycle time
Volume of Exchange unit
read only
read only
3.2.2.82.
ditto
97
3.2. Remote control commands
&Assembly
Object
Description
Input range
Reference
& Root
:
├ Assembly
├ . Bur
│ ├ .Rates
│ │ ├ .Forward
│ │ │ ├ .Select
│ │ │ ├ .Digital
│ │ ├ .Reverse
│ │ │ ├ .Select
│ │ │ ├ .Digital
│ ├ .Fill
│ ├ .ModeDis
│ │ ├ .Select
│ │ ├ .V
│ │ ├ .Time
│ │ ├ .VStop
│ │ ├ .AutoFill
│
├ .Meas
│ ├ .Status
│ ├ .MeasInput
│ ├ .Ipol
│ ├ .Upol
│
├ .Outputs
│ ├ .AutoEOD
│ ├ .SetLines
│ │ ├ .L0
│ │ ├ up to L 3
│ ├ .ResetLines
│
98
Assembly control
Buret
Rates
Forward rate
Type of rate control
Digital rate
as for forward rate
Type of rate control
Digital rate
Fill
Dispensing
Type of dispensing control
Volume to be dispensed
Time to dispense
Limit volume
Filling after each increment
digital, analog
0...150, max.
3.2.2.83.
ditto
digital, analog
0...150, max.
$G,$H,$C
$G,$S,$H,$C
volume, time
0.0001...0.1...9999
0.25...1...86 400
0.0001...9999, OFF
ON, OFF
ditto
ditto
3.2.2.84.
3.2.2.85.
ditto
ditto
ditto
ditto
ditto
Measuring
Measuring ON/OFF
Selection of measuring input
Polarization current
Polarization voltage
ON, OFF
3.2.2.86.
1, 2, diff., Ipol, Upol, Temp
ditto
0...1...±127
ditto
0...400...±1270
ditto
I/O outputs
Automatic output of EOD
Set I/O lines
Signal on L0
ON, OFF
3.2.2.87.
$G
ditto
active,inactive,pulse,OFF
ditto
Reset I/O lines
$G
ditto
794 Basic Titrino
3.2 Remote control commands
&Setup
Object
Description
Input range
Reference
& Root
:
├ Setup
├ .Keycode
├ .Tree
│ ├ .Short
│ ├ .ChangedOnly
│
├ .Trace
│
├ .Lock
│ ├ .Keyboard
│ ├ .Config
│ ├ .Parameter
│ ├ .SmplData
│ ├ .UserMeth
│ │ ├ .Recall
│ │ ├ .Store
│ │ ├ .Delete
│ └ .Display
│
├ .Mode
│ ├ .StartWait
│ ├ .FinWait
│
├ .SendMeas
│ ├ .SendStatus
│ ├ .Interval
│
│ ├ .Select
│ ├ .Assembly
│ │ ├ .CyclNo
│ │ ├ .V
│ │ ├ .Meas
│ ├ .Titrator
│ │ ├ .CyclNo
│ │ ├ .V
│ │ ├ .Meas
│ │ ├ .dVdt
│ │ ├ .dMeasdt
│ │ ├ .dMeasdV
│ │ ├ .ERC
│
├ .AutoInfo
│ ├ .Status
│ ├ .P
│ ├ .T
│ │ ├ .R
│ │ ├ .G
│ │ ├ .GC
│ │ ├ .S
│ │ ├ .B
│ │ ├ .F
794 Basic Titrino
Settings for the operating mode
Send key code
Sending format of path info
Short format of path
Paths of modified nodes only
Message on changed values
Lock key functions
Lock all keyboard keys
Lock <CONFIG> key
Lock <PARAM> key
Lock <SMPL DATA> key
Lock functions
Lock “loading”
Lock “saving”
Lock “deletion”
Lock display function
Setting waiting intervals
Waiting time after start
Waiting time after run
ON, OFF
3.2.2.88.
ON, OFF
ON, OFF
3.2.2.89.
ditto
ON, OFF
3.2.2.90.
ON, OFF
ON, OFF
ON, OFF
ON, OFF
3.2.2.91.
ditto
ditto
ditto
ON, OFF
ON, OFF
ON, OFF
ON, OFF
ditto
ditto
ditto
ditto
ON, OFF
ON, OFF
3.2.2.92.
ditto
Automatic sending of measured values
Connect/disconnect sending
ON, OFF
Time interval
0.08...4...16200,
MPList
Selection
Assembly, Titrator
From assembly
Cycle number
ON, OFF
Volume
ON, OFF
Measured indicator voltage
ON, OFF
From Titrator
Cycle number
ON, OFF
Volume
ON, OFF
Measured indicator voltage
ON, OFF
Volume drift dV/dt
ON, OFF
Measured value drift
ON, OFF
1st deviation of titration curve
ON, OFF
ERC from DET
ON, OFF
Automatic message for changes
Switch AutoInfo on/off
When mains is switched on
Titrator infos
When “ready”
When method started
When start is initiated
When stopped
Begin of method
End of process
3.2.2.93.
ditto
3.2.2.94.
3.2.2.95.
ditto
ditto
3.2.2.96.
ditto
ditto
ditto
ditto
ditto
ditto
ON, OFF
ON, OFF
3.2.2.97.
ditto
ditto
ON, OFF
ON, OFF
ON, OFF
ON, OFF
ON, OFF
ON, OFF
ditto
ditto
ditto
ditto
ditto
ditto
99
3.2. Remote control commands
│ │ ├ .E
│ │ ├ .H
│ │ ├ .C
│ │ ├ .O
│ │ ├ .N
│ │ ├ .Re
│ │ ├ .Si
│ │ ├ .M
│ │ ├ .EP
│ │ ├ .RC
│ ├ .I
│ ├ .O
│
├ .Graphics
│ ├ .Grid
│ ├ .Frame
│ ├ .Scale
│ ├ .Recorder
│ │ ├ .Right
│ │ ├ .Feed
│
├ .PowerOn
├ .Initialise
│ ├ .Select
│
├ .RamInit
├ .InstrNo
├ .Value
100
"Setup", continuation
Error
When “hold"
Continue after "hold"
Conditioning OK
Conditioning not OK
Request after start
Silo empty
Entry in measuring point list
Entry in EP list
Recalculation of results done
Changing an I/O input
Changing an I/O output
Changing the curve output
Grid on curve
Frame on curve
Type of depending axis
Length of axes
Length of meas value axis
Length of paper drive axis
RESET (power on)
Set default values
Selection of branch
Initialization of working mem.
Device Identification
Input of device identification
ON, OFF
ON, OFF
ON, OFF
ON, OFF
ON, OFF
ON, OFF
ON, OFF
ON, OFF
ON, OFF
ON, OFF
ON, OFF
ON, OFF
ON, OFF
ON, OFF
Full, Auto
0.2...0.5...1.00
0.01...0.05...1.00
ditto
ditto
ditto
ditto
ditto
ditto
ditto
ditto
ditto
ditto
ditto
ditto
3.2.2.98.
ditto
ditto
ditto
ditto
$G
3.2.2.99.
$G
3.2.2.100.
ActMeth,Config,Silo,Calib
Assembly,Setup,All
ditto
$G
3.2.2.101.
$G
3.2.2.102.
8 ASCII characters
ditto
794 Basic Titrino
3.2 Remote control commands
&Diagnose
Object
Description
Input range
Reference
Diagnose
Output of adjustment parameters
$G
3.2.2.103.
& Root
:
├ Diagnose
├ .Report
794 Basic Titrino
101
3.2. Remote control commands
3.2.2 Description of the remote control commands
3.2.2.1.
Mode
$G, $S, $H, $C
Start and stop ($G, $S) or hold of the current method (3.2.2.3) with $H and
continue with $C.
$G also serves to continue after inquiries of identifications and sample size after the start (see 3.2.2.25) as well as after inquiries of calibration temperature
and pH values of buffers (see 3.2.2.36 and 3.2.2.37).
3.2.2.2.
Mode.QuickMeas
$G, $S
Start and stop of a measurement in the basic mode with the parameters
(measured quantity, measuring input) of the current method. Corresponds to
the <meas/hold> key. In TIP, the measured quantity is selected with
&Mode.Parameter.Presel, see 3.2.2.44.
With an ongoing measurement, the current mode can be started. This stops
the measurement automatically.
3.2.2.3.
Mode.Select
DET, MET, SET, MEAS, CAL, TIP
Mode.DETQuantity
pH, U, Ipol, Upol
Mode.METQuantity
pH, U, Ipol, Upol
Mode.SETQuantity
pH, U, Ipol, Upol
Mode.MEASQuantity
pH, U, Ipol, Upol, T
Selection of the standard mode. Mode and the measured quantity belong to
the complete selection.
If a method is selected from the method memory, the nodes &Mode.Select
and &Mode.XXXQuantity are overwritten with mode and measured quantity of
the corresponding user method.
3.2.2.4.
Mode.Name
read only
Name of the current method in the working memory. $Q sends 8 ASCII characters. Standard methods carry the name ********. The node can be set
read + write, see 3.2.2.70.
3.2.2.5.
Mode.Def.Formulas.1.Formula
EPX, CXX, RSX, +, -, *, /, (, )
Mode.Def.Formulas.1.TextRS
up to 8 ASCII characters
Mode.Def.Formulas.1.Decimal
0...2...5
Mode.Def.Formulas.1.Unit
up to 6 ASCII characters
Mode.Def.Formulas.2.Formula
etc. up to .9
Entry of formulas. Rules for formula entry, see page 52ff.
Example: "(EP2-EP1)*C01/C00"
In addition to the formula, a text for result output, the number of decimal
places and a unit for the result output can be selected. "No unit" is selected
with the blank string.
In place of "RSX", a result name may be entered (.TextRS). This name is outputted in the report full, short, scalc full and scalc srt. It is used for the result
and the corresponding mean value.
102
794 Basic Titrino
3.2 Remote control commands
3.2.2.6.
Mode.Def.SiloCalc.Assign.C24
RSX, EPX, CXX
Mode.Def.SiloCalc.Assign.C25
RSX, EPX, CXX
Mode.Def.SiloCalc.MatchId
id1, id1&2, all, OFF
.Assign.C2X: Assignment to store results in the silo as C2X.
.MatchId:
Indication which sample identification(s) have to match so that
the results can be combined.
3.2.2.7.
Mode.Def.ComVar.C30
RSX, MNX, EPX, CXX
Mode.Def.ComVar.C31
etc., up to .C39
Assignment of common variables.
The values of the common variables are to be found in &Config.ComVar. They
can be viewed and entered there, see 3.2.2.58.
3.2.2.8.
Mode.Def.Report.Assign
DET: full, short, mplist, curve, derive comb, scalc full, scalc srt,
calc, param, calib, ff
MET: full, short, mplist, curve, scalc full, scalc srt,
calc, param, calib, ff
SET, MEAS, CAL:full, short, scalc full, scalc srt, calc, param, calib, ff
TIP: full, short, scalc full, scalc srt, calc, param, ff
Definition of the report sequence, which is outputted automatically at the end
of the determination. Entries of more than one block have to be separated with
";".
3.2.2.9.
Mode.Def.Mean.1.Assign
RS1, RSX, EPX, CXX
Mode.Def.Mean.2.Assign
etc., up to .9
Assignment of the statistics calculations. Valid assignments are a requirement
for statistics calculations. In addition, the statistics calculation must be
switched on, see 3.2.2.23. Rules for statistics calculations see page 55.
3.2.2.10.
Mode.Def.TempVar.C70
RSX, EPX, CXX
etc. up to .C79
Assignment of temporary variables in a submethod for calculations in TIP.
3.2.2.11.
Mode.CFmla
Mode.CFmla.1.Value
0...±999 999
Mode.CFmla.2.Value
etc., up to .19
Calculation constants specific to a method. Stored in the method memory of
the Titrino. Operands specific to the sample (3.2.2.60 and 3.2.2.61) and values of common variables (3.2.2.58) on the other hand are not stored with the
methods.
3.2.2.12.
794 Basic Titrino
Mode.Parameter.TitrPara.MptDensity
Mode.Parameter.TitrPara.MinIncr
0...4...9
0...10.0...999.9
103
3.2. Remote control commands
Mode.Parameter.TitrPara.VStep
0...0.10...9.999
.MptDensity: Parameter for DET: Measuring point density.
.MinIncr: Parameter for DET: Minimum increment in µL. If the minimum increment is set to 0, measured values are stored vs. time.
.VStep:
Parameter for MET: Volume increment in mL. With "0", there is no
dispensing and measured values vs. time are entered in the
measuring point list.
3.2.2.13. Mode.Parameter.TitrPara.DosRate
0.01...150, max.
Parameters for DET and MET: Dispensing rate for the volume increments in
mL/min. Max. means maximum possible dispensing rate with the Exchange
Unit in current use.
3.2.2.14.
Mode.Parameter.TitrPara.SignalDrift pH,U,Ipol:0.5...50...999, OFF
Upol: 0.05...50...99.9, OFF
Mode.Parameter.TitrPara.UnitSigDrift
read only
Mode.Parameter.TitrPara.EquTime
0...26...9999, OFF
Parameters for DET and MET: Criteria for the measured value acquisition.
Measured value drift in mV/min (with pH, U, Ipol) or µA/min (with Upol),
equilibration time in s. OFF means that the corresponding criterion is switched
off. If both criteria are OFF, the measured values are acquired immediately after dispensing.
If the equilibration time has never been edited, it is automatically calculated by
the instrument to match the drift, see page 31. After it has been edited once, it
remains in force with the set value.
3.2.2.15.
Mode.Parameter.TitrPara.StartV.Type
abs., rel., OFF
Mode.Parameter.TitrPara.StartV.V
0...999.99
Mode.Parameter.TitrPara.StartV.Factor
0...±999 999
Mode.Parameter.TitrPara.StartV.Rate
0.01...150, max.
Parameters for DET, MET, SET: Start volume.
If an absolute start volume (abs.) has been selected, the volume in mL is
valid.
A relative start volume (rel.) is dispensed as a function of the sample size:
Start volume in mL = smpl size * factor
The factor is valid.
The dispensing rate in mL/min applies to both cases. Max. means maximum
possible dispensing rate with the Exchange Unit in current use.
3.2.2.16. Mode.Parameter.TitrPara.Pause
0...999 999
Parameters for DET, MET, SET: Pause time in s. Is waited off after the dispensing of the start volume.
3.2.2.17.
Mode.Parameter.TitrPara.MeasInput
Mode.Parameter.TitrPara.Ipol
Mode.Parameter.TitrPara.Upol
Mode.Parameter.TitrPara.PolElectrTest
Parameters for DET, MET, SET:
104
1, 2, diff.
-127...1...+127
-1270...400...+1270
ON, OFF
794 Basic Titrino
3.2 Remote control commands
Selection of the measuring input; valid with measured quantities pH and U.
"diff." means differential amplifier, see page 155.
With Ipol, the inquiries for the polarization current in µA (Ipol) and
.PolElectrTest are valid.
With Upol, the inquiry for the polarization voltage in mV (Upol) is valid. Entry in
steps of 10 mV.
Besides .PolElectrTest is valid.
If the test for polarized electrodes is switched on, it is performed on changeover from the inactive state to an active state (titration or conditioning).
3.2.2.18. Mode.Parameter.TitrPara.Temp
-170.0...25.0...500.0
Parameters for DET, MET, SET: Titration temperature in °C. If a Pt100 or
Pt1000 is connected, the temperature is measured continuously and the parameter .Temp is updated.
The temperature is used for the temperature correction in pH measurements.
3.2.2.19.
Mode.Parameter.StopCond.VStop.Type
abs., rel., OFF
Mode.Parameter.StopCond.VStop.V
0...99.99...9999.99
Mode.Parameter.StopCond.VStop.Factor
0...±999 999
Parameters for DET, MET, SET: Stop volume.
If an absolute stop volume (abs.) has been selected, the volume in mL is
valid.
A relative stop volume (rel.) is dispensed as a function of the sample size:
Stop volume in mL = smpl size * factor
The factor is valid.
OFF means that the criterion is not monitored.
3.2.2.20.
Mode.Parameter.StopCond.MeasStop
pH: 0...±20.00, OFF
U: 0... ±2000, OFF
I:
0...200.0, OFF
Mode.Parameter.StopCond.UnitMStop
read only
Parameters for DET and MET: Stop when a measured value is reached. Entry
as pH value, in mV (with U and Ipol) and in µA (with Upol). The appropriate
unit can be viewed with .UnitMStop.
OFF means that the criterion is not monitored.
3.2.2.21. Mode.Parameter.StopCond.EPStop
1...9, OFF
Parameters for DET and MET: Stop when a certain number of EP's has been
found.
OFF means that the criterion is not monitored.
3.2.2.22. Mode.Parameter.StopCond.FillRate
0.01...150, max.
Parameters for DET, MET, SET: Filling rate in the titration in mL/min. Max.
means maximum possible filling rate with the Exchange Unit in current use.
3.2.2.23.
794 Basic Titrino
Mode.Parameter.Statistics.Status
Mode.Parameter.Statistics.MeanN
ON, OFF
2...20
105
3.2. Remote control commands
Mode.Parameter.Statistics.ResTab.Selected
original, delete n,
delete all
1...20
Mode.Parameter.Statistics.ResTab.DelN
Entries for the statistics calculations.
.Status:
On/off switching. Requirement for statistics calculations is a valid
assignment, see 3.2.2.9.
.MeanN: Number of individual results for statistics calculations.
.ResTab.Select: Selection of the table for the statistics calculations.
original: Original table. The original table is (again) set up, i.e. any
individual results which have been deleted are reincorporated
in the statistics calculations.
delete n: Single result lines are removed from the statistics calculation. All results of the corresponding line in the statistics
table are deleted. Specification of the line number in
.ResTab.DelN.
delete all: Clear entire statistics table. The results can not be reactivated.
.ResTab.DelN: Specification of the line number to be deleted.
3.2.2.24.
DET: 0...5...200
MET pH: 0.1...0.50...9.99
U, Ipol: 1...30...999
Upol: 0.1...2...99.9
Mode.Parameter.Evaluation.Recognition.Selected
all, greatest,
last, window, OFF
Mode.Parameter.Evaluation.Recognition.Window.1.LowLim
pH:
0...±20.00, OFF
U, Ipol:
0...±2000, OFF
Upol:
0...±200.0, OFF
Mode.Parameter.Evaluation.Recognition.Window.1.UpLim
Input range as LowLim
etc. up to 9 windows
Mode.Parameter.Evaluation.FixEP.1.Value pH:
0...±20.00, OFF
U; Ipol: 0...±2000, OFF
etc. up to 9 fix EP's
Upol: 0...±200.0, OFF
Mode.Parameter.Evaluation.pK
ON, OFF
Parameters for DET and MET: Evaluation of the EP's, see page 32.
.EPC: EP criterion in pH, in mV (with U and Ipol) or in µA (with Upol).
.Recognition.Selected: EP recognition.
all: All endpoints found are recognized.
great: Only the largest EP is recognized.
last: Only the last EP is recognized.
window: Only EP's that lie within set windows are recognized.
OFF: The EP evaluation is switched off.
.Recognition.Window.1.LowLim: Lower limit for window in pH, mV (with U
and Ipol) or µA (with Upol).
.Recognition.Window.1.UpLim: Upper limit for window in pH, mV (with U and
Ipol) or µA (with Upol).
Windows are opened until the lower limit is set to OFF. For every
expected EP, an individual window must be set, see page 34.
.FixEP.1.Val: Fix-EP's in pH, mV (for U, Ipol) resp. µA (for Upol). Fix EP's are
evaluated until the setting OFF is found.
106
Mode.Parameter.Evaluation.EPC
794 Basic Titrino
3.2 Remote control commands
.pK: pK or HNP evaluation. Possible only in pH and U titrations.
3.2.2.25.
Mode.Parameter.Presel.IReq
id1, id1&2, all, OFF
Mode.Parameter.Presel.SReq
value, unit, all, OFF
Parameters for DET, MET, SET, MEAS: Automatic inquiry after the start of the
determination. From such an inquiry, the determination continues if the requested entry/entries is/are made, e.g. &SmplData.OFFSilo.Id1 (see 3.2.2.84)
or with &M $G, see 3.2.2.1.
$H is not possible in requests.
3.2.2.26.
Mode.Parameter.Presel.ActPuls
3.2.2.27.
Mode.Parameter.SET1.EP
3.2.2.28.
Mode.Parameter.SET1.Dyn
for SET:
Output of a pulse on the I/O line "Activate", see page 163.
ON, OFF
first, all, cond., OFF
pH:
0...±20.00, OFF
U, Ipol: 0...±2000, OFF
Upol:
0...±200.0, OFF
Mode.Parameter.SET1.UnitEp
read only
Parameters for SET: Setting the 1st endpoint as pH value, in mV (with U and
Ipol) resp. µA (with Upol). The corresponding unit can be read with .UnitEP.
If the value is on "OFF", no further nodes will appear from SET1.
pH: 0.01...20.00, OFF
U, Ipol: 1...2000, OFF
Upol: 0.1...200.0, OFF
read only
0.01...10...150, max.
0.01...25.0...9999.9
Mode.Parameter.SET1.UnitDyn
Mode.Parameter.SET1.MaxRate
Mode.Parameter.SET1.MinRate
Parameters for SET: Control parameters, see page 42.
.Dyn:
Dynamics, control range in pH, mV (with U and Ipol) or µA (with
Upol). The corresponding unit can be read with .UnitDyn.
.MaxRate: Maximum allowed titration rate in mL/min. Max. means maximum
possible rate with the Exchange Unit in current use.
.MinRate: Minimum titration rate in ul/min.
3.2.2.29.
Mode.Parameter.SET1.Stop.Type
drift, time
Mode.Parameter.SET1.Stop.Drift
1...20...999
Mode.Parameter.SET1.Stop.Time
0...10...999, inf
Mode.Parameter.SET1.Stop.StopT
0...99 999, OFF
Parameters for SET: Type and size of the stop criterion of the titration.
.Type: Type of stop criterion after stop drift or switch-off delay time.
.Drift: Stop drift in ul/min. Applies when "drift" has been selected.
.Time: Switch-off delay time in s. Applies when "time" has been selected. "inf"
means infinite.
.StopT: Stop time in s. Applies when "time" has been selected and the value of
.Time is set to "inf.".
794 Basic Titrino
107
3.2. Remote control commands
3.2.2.30. Mode.Parameter.TitrPara.Direction
+, -, auto
Parameters for SET: Titration direction.
"auto" means the titration direction is determined automatically by the instrument. If 2 EP's have been set in a SET titration, the titration direction is given
by the two EP's. The entry of the titration direction is then invalid.
3.2.2.31.
Mode.Parameter.Presel.Cond
Mode.Parameter.Presel.DriftDisp
Parameters for SET:
.Cond: Conditioning ON/OFF
.DriftDisp: Drift display during conditioning ON/OFF.
ON, OFF
ON, OFF
3.2.2.32.
Mode.Parameter.Measuring.SignalDrift
pH, U, Ipol, T: 0.5...999, OFF
Upol:
0.05...99.9, OFF
Mode.Parameter.Measuring.UnitSigDrift
read only
Mode.Parameter.Measuring.EquTime
0...9999, OFF
Parameters for MEAS: Criteria for the measured value acquisition. Measured
value drift in mV/min (with pH, U, Ipol), µA/min (with Upol), resp. °C/min
(with T). Equilibration time in s. OFF means that the corresponding criterion is
switched off. If both criteria are OFF, the measurement continues indefinitely.
If the equilibration time has never been edited, it is automatically calculated by
the instrument to match the drift, see page 45. After it has been edited once, it
remains in force with the set value.
3.2.2.33.
Mode.Parameter.Measuring.MeasInput
1, 2, diff.
Mode.Parameter.Measuring.Ipol
±127...1...+127
Mode.Parameter.Measuring.Upol
±1270...400...+1270
Mode.Parameter.Measuring.PolElectrTest
ON, OFF
Parameters for MEAS:
Selection of the measuring input; valid with measured quantities pH and U.
"diff." means differential amplifier, see page 155.
With Ipol, the inquiries for the polarization current in µA (Ipol) and
.PolElectrTest are valid.
With Upol the inquiry for the polarization voltage in mV (Upol) is valid. Entry in
steps on 10 mV.
Besides .PolElectrTest is valid.
If the test for polarized electrodes is switched on, it is performed on changeover from the inactive state to the measurement.
3.2.2.34. Mode.Parameter.Measuring.Temp
-170.0...25.0...500.0
Parameters for MEAS: Measurement temperature in °C. If a Pt100 or Pt1000
is connected, the temperature is measured.
The temperature is used for the temperature correction in pH measurements.
3.2.2.35. Mode.Parameter.Calibration.MeasInput
1, 2, diff.
Parameters for CAL: Selection of the measuring input. "diff." means differential amplifier, see page 155.
108
794 Basic Titrino
3.2 Remote control commands
3.2.2.36. Mode.Parameter.Calibration.CalTemp
-20.0...25.0...120.0
Parameters for CAL: Calibration temperature in °C. If a Pt 100 or Pt1000 is
connected, the temperature is measured.
3.2.2.37.
Mode.Parameter.Calibration.Buffer.1.Value
0...7.00...±20.00
Mode.Parameter.Calibration.Buffer.2.Value 0...4.00...±20.00, OFF
etc. up to 9 buffers
Parameters for CAL: pH of buffers. The first buffer which is set to "OFF" determines the number of buffers in the calibration.
3.2.2.38.
Mode.Parameter.Calibration.SignalDrift
0.5...2...999, OFF
Mode.Parameter.Calibration.EquTime
0...110...9999, OFF
Parameters for CAL: Criteria for measured value acquisition. Measured value
drift in mV/min, equilibration time in s. OFF means that the corresponding criterion is switched off. If both criterions are on OFF, the measured value is acquired immediately.
If the equilibration time has never been edited, it is automatically calculated by
the instrument to match the drift, see page 31. After it has been edited once, it
remains in force with the set value.
3.2.2.39. Mode.Parameter.Calibration.ElectrodeId
up to 8 ASCII char
Parameters for CAL: Electrode identification. It is classified under calibration
data, see 3.2.2.68.
3.2.2.40. Mode.Parameter.Calibration.SmplChanger
ON, OFF
Parameters for CAL: Calibration at Titrino.
With "ON", there are no hold points in the calibration sequence for entries, the
first buffer is measured directly.
3.2.2.41. Mode.Parameter.Calibration.ActPulse
first, all, OFF
Parameters for CAL: Output of a pulse on the I/O line "Activate", see page
163.
method, pause, L4 output,
L6 output, info, OFF
Parameters for TIP: Selection of an element for step X (X = 1...30). For the
parameters of the elements see 3.2.2.43.
794 Basic Titrino
3.2.2.42.
Mode.Parameter.Sequence.X.Select
3.2.2.43.
Mode.Parameter.Sequence.X.Method
Mode.Parameter.Sequence.X.Pause
Mode.Parameter.Sequence.X.L4Output
Method name
0...999 999, INF
active, inactive,
pulse, OFF
Mode.Parameter.Sequence.X.L6Output
as for L4
Mode.Parameter.Sequence.X.Info
up to 16 ASCII characters
109
3.2. Remote control commands
Parameters for TIP: Parameters of the elements of TIP.
.Method: Method name of a method available in the user memory. Up to 8
ASCII characters.
.Pause:
Pause time in s. INF means infinite. Continue the sequence with
&m $G.
.L4 Output: Warning: A pulse triggered by the limit value monitoring at L4 (pin
3) in a submethod sets an output set to active in TIP to inactive.
.L6 Output: Warning: An activate pulse at L6 output (pin 1) in a submethod
sets an output set to active in TIP to inactive.
.Info:
Entry of a message which is written into the display. The sequence remains in the display with the corresponding message.
Continue with &m $G.
3.2.2.44.
Mode.Parameter.Presel.MeasMode
pH, U, Ipol, Upol, OFF
Mode.Parameter.Presel.MeasInput
1, 2, diff.
Mode.Parameter.Presel.Ipol
0...1...±127
Mode.Parameter.Presel.Upol
0...400...±1270
Mode.Parameter.Presel.PolElectrTest
ON, OFF
Mode.Parameter.Presel.Temp
-170....25.0...500.0
Parameters for TIP: Selection of the measured quantity for manual measurements in the inactive state, see 3.2.2.2. Selection of the measuring input
(MeasInput) applies to measured quantities pH and U. "diff." means differential amplifier, see page 155. With Ipol the requests for the polarization current
in µA (Ipol) and .PolElectrTest apply. With Upol the request for the polarization
voltage in mV (Upol) applies. Entry in steps of 10 mV. .PolElectrTest also applies. If the test for polarized electrodes is switched on (ON), it will be performed on the change from the inactive state to an active state. The temperature applies to pH measurements.
3.2.2.45. UserMeth.FreeMem
read only
Memory space, available for user methods or silo lines. $Q sends the number
of free bytes, e.g. "4928".
3.2.2.46.
UserMeth.Recall
$G
UserMeth.Recall.Name
up to 8 ASCII characters
UserMeth.Store
$G
UserMeth.Store.Name
up to 8 ASCII characters
UserMeth.Delete
$G
UserMeth.Delete.Name
up to 8 ASCII characters
UserMeth.DelAll
$G
Management of the internal method memory: Load, store and delete methods.
An action is performed if "$G" is sent to the corresponding node just after entering the name.
Do not use blank characters before and after method name!
.DelAll: Deletes all methods in the user memory.
3.2.2.47.
110
UserMeth.List.1.Name
UserMeth.List.1.Mode
UserMeth.List.1.Quantity
read only
read only
read only
794 Basic Titrino
3.2 Remote control commands
UserMeth.List.1.Bytes
read only
UserMeth.List.1.Checksum
read only
for each method
List of the methods in the user method memory with the following
characteristics:
.Name:
Name of the method
.Mode:
Mode
.Quantity: Measured quantity
.Bytes:
Number of bytes of the user memory used by the method
.Checksum: Checksum of the method, see 3.2.2.68.
3.2.2.48. Config.PeriphUnit.CharSet1
Epson, Seiko, Citizen, HP, IBM
Selection of the character set and the graphics control characters of the Titrino.
IBM means the IBM character set following character set table 437 and IBM
graphics control characters. Select 'IBM' for work with the computer.
3.2.2.49.
Config.PeriphUnit.Balance
Sartorius,Mettler,Mettler AT,
AND,Precisa
Config.PeriphUnit.Plot
U, dU/dt, V, dV/dt, U(rel), T
Selection of the balance type and the signal at the analog output.
3.2.2.50.
Config.Aux.Language
Selection of the dialog language.
english, deutsch, francais, espanol,
italiano, portugese, svenska
3.2.2.51.
Config.Aux.Set
$G
Config.Aux.Set.Date
YYYY-MM-DD
Config.Aux.Set.Time
HH:MM
Date and time.
Input format of the date: Year-month-day, two-digit, enter leading zeros.
Input format for the time: Hours:minutes, two-digit, enter leading zeros.
Date and time have to be set with &Config.Aux.Set $G just after entry of the
value.
3.2.2.52. Config.Aux.RunNo
0...9999
Current sample number.
Set to 0 on power on and initialization. After 9999, counting starts again at 0.
3.2.2.53. Config.Aux.AutoStart
Number of automatic, internal starts.
1...9999, OFF
3.2.2.54. Config.Aux.StartDelay
0...999 999
Start delay time in s. During this time, the data of the preceding determination
are retained.
794 Basic Titrino
111
3.2. Remote control commands
3.2.2.55. Config.Aux.DevName
up to 8 ASCII characters
Name of the instrument for connections with several units. It is advisable to
use only the letters A...Z (ASCII No. 65...90), a...z (ASCII No. 97...122) and
the numbers 0...9 (ASCII No. 48...57) when the function Setup.AutoInfo
(3.2.2.97) is used at the same time.
If a name has been entered, it will be printed out in the result report (full,
short).
3.2.2.56. Config.Aux.Prog
Output of the program version.
The Titrino sends "794.0010" on requests with $Q.
read only
3.2.2.57.
Config.RSSet
$G
Config.RSSet.Baud
300, 600, 1200, 2400, 4800, 9600
Config.RSSet.DataBit
7, 8
Config.RSSet.StopBit
1, 2
Config.RSSet.Parity
even, odd, none
Config.RSSet.Handsh
HWs, HWf, SWchar, SWline, none
$G sets all RS settings. The changes are performed only if the instrument is
inactive. After the setting of the interface parameters, wait at least 2 s to allow
the components to equilibrate.
Settings of the values for the data transmission via the RS interface: baud
rate, data bit, stop bit, parity and type of handshake, see also page 125ff.
The setting of the values must be initiated with $G immediately after entry of
the values.
3.2.2.58.
Config.ComVar.C30
with up to .C39, etc.
0... +999 999
Values of the common variables from C30 up to C39. Insert the common
variables directly or describe the determination results directly from the
method, see 3.2.2.7
3.2.2.59. SmplData.Status
ON, OFF
On/off switching of silo memory. When the silo memory is switched on, the
sample data are fetched from the lowest valid silo line.
3.2.2.60.
SmplData.OFFSilo.Id1
up to 8 ASCII characters
SmplData.OFFSilo.Id2
up to 8 ASCII characters
SmplData.OFFSilo.Id3
up to 8 ASCII characters
SmplData.OFFSilo.ValSmpl
6-digits, sign and decimal point
SmplData.OFFSilo.UnitSmpl
up to 5 ASCII characters
Current sample data.
The identifications Id1...Id3 can be used in formulas as sample-specific calculation constants C21...C23.
If "no unit" is desired for the unit of the sample size, the blank string must be
entered.
112
794 Basic Titrino
3.2 Remote control commands
3.2.2.61.
SmplData.ONSilo.Counter.MaxLines
SmplData.ONSilo.Counter.FirstLine
SmplData.ONSilo.Counter.LastLine
Information on silo memory.
.MaxLines: Maximum possible number of silo lines.
.FirstLine: Lowest valid silo line.
.LastLine: Last occupied silo line.
read only
read only
read only
3.2.2.62.
SmplData.ONSilo.EditLine.1.Method
up to 8 ASCII characters
SmplData.ONSilo.EditLine.1.Id1
up to 8 ASCII characters
SmplData.ONSilo.EditLine.1.Id2
up to 8 ASCII characters
SmplData.ONSilo.EditLine.1.Id3
up to 8 ASCII characters
SmplData.ONSilo.EditLine.1.ValSmpl 6-digits, sign and dec.point
SmplData.ONSilo.EditLine.1.UnitSmpl
up to 5 ASCII characters
SmplData.ONSilo.EditLine.1.C24
read only
SmplData.ONSilo.EditLine.1.C25
read only
SmplData.ONSilo.EditLine.1.Mark
read only
etc., up to .99
Contents of a silo line.
.Method: Method used to process the sample, from the method memory or
from the card.
.Id:
The identifications Id1...Id3 can also be used as sample-specific
calculation constants C21...C23 in formulas.
.UnitSmpl: If "no unit" is desired for the sample size, the blank string must be
entered.
.C24, .C25: Results which have been assigned to C24 and C25.
.Mark:
Mark of the silo line: "*"=deleted line, "+"=line which is worked
off, "-"= line which is worked off and not valid for silo calculations (deleted), "/" last worked-off line, where recalculation can
still be done. Silo lines which have been worked off are "read
only".
3.2.2.63.
SmplData.ONSilo.DelLine
$G
SmplData.ONSilo.DelLine.LineNum
1...99, OFF
Deletion of a silo line. The line # is deleted with &SmplData.ONSilo.DelLine
$G. If a formerly deleted line is edited again, it becomes valid (function "undelete").
3.2.2.64. SmplData.ONSilo.DelAll
Deletes the entire silo memory. Must be triggered with $G.
$G
3.2.2.65. SmplData.ONSilo.CycleLines
ON, OFF
Silo data cycling.
With "ON", executed lines are copied to the next free silo lines, see page 71.
Exercise caution if you edit the silo memory during the determinations!
3.2.2.66.
794 Basic Titrino
SmplData.ONSilo.SaveLines
ON, OFF
113
3.2. Remote control commands
Silo lines are not deleted when they are worked off. Assigned results are
stored as C24 and C25. "Save lines" can only be set to "ON" if the silo is
completely empty. Delete the silo, see 3.2.2.64.
3.2.2.67.
Info.Report
Info.Report.Select
$G
configuration, parameters, smpl data,
statistics, silo, calib, C-fmla, def,
user method, full, short, mplist,
curve, deriv, comb, scalc full, scalc
srt, calc, all, ff
$G sends the selected report to the COM which is set in
&Config.PeriphUnit.RepToComport:
configuration: Configuration report. Is not accessible during a running determination.
parameters: Parameter report of the current method. During a running determination only "live"-parameters are accessible.
smpl data: Current sample data.
statistics: Statistics table with the individual results.
silo:
Contents of the silo memory.
calib:
Calibration data of the measuring input in the current method.
C-fmla:
Contents of the <C-fmla> key.
def:
Contents of the <def> key.
user method: Contents of the method memory.
full:
Full result report of the last completed determination.
short:
Short result report of the last completed determination.
mplist:
Measuring point list of the running determination.
curve:
Titration curve of the last determination.
derive:
1st derive of titration curve of the last determination (with DET).
comb:
1st derive combined with the titration curve of the last determination (with DET).
scalc full: Full report of the silo calculations.
scalc srt: Short report of the silo calculations.
calc:
Calculation report of the current method.
all:
All reports.
ff:
Form feed on printer.
Reports which are sent from the Titrino are marked with space (ASCII 32) and
' at the beginning. Then an individual identifier for each report follows. Reports
which are triggered by RS232 ($G) have the same introducer but without preceding space, i.e. they start with '.
3.2.2.68.
Info.CalibrationData
$G
Info.CalibrationData.Inp1.pHas
-20.00...7.00...+20.00
Info.CalibrationData.Inp1.Slope
-9.999...1.000...+9.999
Info.CalibrationData.Inp1.Temp
-170.0...25.0...+500.0
Info.CalibrationData.Inp1.Date
read only
Info.CalibrationData.Inp1.ElectrodeId
read only
identical for .Inp2 and .Diff
pH calibration data for measuring input 1. After the calibration, the data are
entered automatically together with the date of the calibration and the electrode identification, see 3.2.2.39.
114
794 Basic Titrino
3.2 Remote control commands
Calibration data can be entered. They are accepted with &Info.CalibrationData
$G. If calibration data are entered, the calibration date is deleted.
3.2.2.69.
Info.Checksums
$G
Info.Checksums.MPList
read only
Info.Checksums.ActualMethod
read only
The checksums can be used to identify the content of a file unequivocally,
e.g. files with identical content
have identical results of the checksums. An empty file has checksum "0". The
calculation of the checksums is triggered with $G.
.MPList: Result of the checksum of the current measuring point list.
.ActualMethod: Result of the checksum of the current method in the working
memory. Identical methods with different method names have the
same results of the checksum.
3.2.2.70.
Info.DetermData
$G
Info.DetermData.Write
ON, OFF
Info.DetermData.MPList.1.Attribute
read only/read+write
Info.DetermData.ExV
read only/read+write
Info.DetermData.MPList.1.X
read only/read+write
Info.DetermData.MPList.1.Y
read only/read+write
for every measuring point
Determination data in hexadecimal format. A measuring point list is available
in mode DET, MET, SET, and MEAS.
Recalculation of the measuring data is triggered with $G.
.Write:
With "ON", the following nodes can be overwritten:
&Info.DetermData.MP.List, &Info.TitrResults.Var.C4X (X = 0...5),
&Info.TitrResults.TempVar.C7X (X = 0...9), and &Mode.Name.
.ExV:
Volume of the exchange unit, with which the determination was
executed
.MPList.1.Attribute: Attribute
.MPList.X: X coordinate, time
.MPList.Y: Y coordinate, volume
3.2.2.71.
Info.TitrResults.RS.1.Value
read only
etc., up to .9
Info.TitrResults.EP.1.V
read only
Info.TitrResults.EP.1.Meas
read only
etc., up to .2
Info.TitrResults.Var.C40
read only/read+write
etc., up to .C47
.RS: Values of the calculated results.
.EP: Endpoints with DET, MET, SET:
Volume coordinate in mL, e.g. "1.2340"
Measured value coordinate in pH "5.12", mV (with U and Ipol) "241" or µA (with Upol) "43.7".
.Var: Various variables. You may overwrite the variables C40...C45, see
3.2.2.95.
794 Basic Titrino
115
3.2. Remote control commands
C40: Initial measured value in pH "5.12", mV (with U and Ipol)
"41", µA (with Upol) "43.7" or °C (with T) "25.0". In MEAS final
measured value.
C41: End volume with SET in ml, "12.5360".
C42: Time from start of titration to end in s, "62".
C43: Volume drift on start of a SET titration from the conditioning
in ul/min, "3.5".
C44: (Last measured) temperature in °C. Used for the temperature
compensation in pH measurements.
C45: Start volume with DET, MET, SET in ml, "2.800".
C46: Asymmetry pH of CAL, "6.89".
C47: Relative electrode slope of CAL, "0.9950".
3.2.2.72.
Info.TitrResults.FixEP.51.Value
read only
etc. up to .59
Info.TitrResults.pK.61.Value
read only
etc. up to .69
Info.TitrResults.TempVar.C70
read only/read+write
etc. up to .C79
.FixEP: Fix EP with DET, MET. C5X corresponds to X = 1...9.
.pK: With DET, MET. C6X corresponds to X = 1...9.
.TempVar: Temporary variables in TIP corresponding to the assignments in
the submethods.
3.2.2.73.
Info.StatisticsVal.ActN
Info.Statistics.1.Mean
Info.Statistics.1.Std
Info.Statistics.1.RelStd
etc. up to .9
The current values of the statistics calculation.
$Q sends, e.g.
ActN: Current value of the individual results
Data for MN1:
Mean: Mean value (decimal places as in result)
Std: Standard deviation (1 decimal place more than in result)
RelStd: Relative standard deviation (in %, 2 decimal places)
read only
read only
read only
read only
"3"
"3.421"
"0.0231"
"0.14"
3.2.2.74.
Info.SiloCalc.C24.Name
read only
Info.SiloCalc.C24.Value
read only
Info.SiloCalc.C24.Unit
read only
for .C25 as for .C24
Info.SiloCalc.C26.ActN
read only
Info.SiloCalc.C26.Mean
read only
Info.SiloCalc.C26.Std
read only
Info.SiloCalc.C26.RelStd
read only
for .C27 as for .C26
The current values from the silo calculations. C26 is the mean value out of the
C24 variables; C27 comes from C25.
$Q sends:
C24.Name: Name of the assigned value
"RS1"
116
794 Basic Titrino
3.2 Remote control commands
C24.Value: Value
C24.Unit: Unit of the assigned value
C26.ActN: Number of single results
C26.Mean: Mean (decimal places as for the result itself)
C26.Std: Standard deviation (decimal places as for the result + 1)
C26.RelStd: Relative standard deviation (in %, 2 decimal places)
"2.222"
"%"
"3"
"3.421"
"0.0231"
"0.14"
3.2.2.75.
Info.ActualInfo.Inputs.Status
read only
Info.ActualInfo.Inputs.Change
read only
Info.ActualInfo.Inputs.Clear
$G
Info.ActualInfo.Outputs.Status
read only
Info.ActualInfo.Outputs.Change
read only
Info.ActualInfo.Outputs.Clear
$G
Status sends the current status of the I/O lines, Change sends the information
regarding whether a change in status of a line has taken place since the last
clearing, Clear clears the change information. For the output, there is a conversion from binary to decimal, e.g.
| 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 |
Line No. | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
Output: 21 + 23 = "10"
1 means ON or change; 0 means OFF or no change.
The lines are assigned as follows (see also pages 161ff):
Inputs:
Outputs:
0
Start (pin 21)
0
Ready (pin 5)
1
Stop (pin 9)
1
Cond. ok (pin 18)
2
Enter (pin 22)
2
Titration (pin 4)
3
Clear (pin 10)
3
EOD (pin 17)
4
Smpl Ready (pin 23)
4
L4 in TIP (pin 3)
5
pin 11
5
Error (pin 16)
6
pin 24
6
Activate, L6 in TIP (pin 1)
7
pin 12
7
Pulse for recorder (pin 2)
3.2.2.76. Info.ActualInfo.Assembly.CyclNo
read only
$Q sends the current cycle number of the voltage measurement cycle, e.g.
"127". From the cycle number and the cycle time (see 3.2.2.82), a time frame
can be set up.
The cycle number is set to 0 on switching on the instrument, on every start
and for QuickMeas. It is incremented as long as the instrument remains
switched on.
3.2.2.77.
Info.ActualInfo.Assembly.Counter.V
read only
Info.ActualInfo.Assembly.Counter.Clear
$G
$Q sends the volume. With the function &Info.Assembly.Counter.Clear $G, the
volume counter is set to zero.
3.2.2.78. Info.ActualInfo.Assembly.Meas
$Q sends the current measured value from the assembly.
794 Basic Titrino
read only
117
3.2. Remote control commands
3.2.2.79.
Info.ActualInfo.Titrator.CyclNo
Info.ActualInfo.Titrator.V
Info.ActualInfo.Titrator.Meas
Info.ActualInfo.Titrator.dVdt
Info.ActualInfo.Titrator.dMeasdt
Info.ActualInfo.Titrator.dMeasdV
Info.ActualInfo.Titrator.ERC
$Q sends the current values in the following formats:
CyclNo
V(ml)
Meas:
pH
U, Ipol (mV)
Upol (uA)
T (°C)
dVdt (ul/s)
dMeasdt
pH,U,Ipol mV/s
Upol (uA/s)
T (°C/s)
dMeasdV (mV/ul)
ERC
read only
read only
read only
read only
read only
read only
read only
DET
127
1.2345
MET
127
1.2345
SET
127
1.2345
MEAS
127
-
CAL
127
-
3.345
-345.6
-12.5
-
3.345
-345.6
-12.5
-
3.6(mV)
-345.6
-12.5
2.5142
3.345
-345.6
-12.5
25.0
-
3.345
-
0.7957
0.7957
34
0.7957
0.7957
-
0.7957
0.7957
10.6326
-
0.7957
0.7957
0.7957
-
0.7957
-
NV: Not Valid. If in the signal drift is OFF in modes MEAS and CAL, the signal
drift is NV.
OV will be sent for "overrange".
A time frame can be set up from the cycle number and the cycle time (see
3.2.2.82). The cycle number is set to 0 at the start of a method and it is incremented until the end of the method.
3.2.2.80.
Info.ActualInfo.MeasPt.Index
read only
Info.ActualInfo.MeasPt.X
read only
Info.ActualInfo.MeasPt.Y
read only
Info.ActualInfo.EP.Index
read only
Info.ActualInfo.EP.X
read only
Info.ActualInfo.EP.Y
read only
$Q sends the last entry into the measuring point list (.MeasPt) or the last entry
into the list of EP's with DET, MET.
.MeasPt.X"165" Volume (DET, MET)
.MeasPt.Y"3.654" Measured value (DET, MET)
.EP.X"1.234" Volume coordinate of the EP
.EP.Y"5.34" Measured value coordinate of the EP
3.2.2.81.
Info.ActualInfo.Display.L1
up to 24 ASCII characters
Info.ActualInfo.Display.L2
up to 24 ASCII characters
Lines of the display. The display can be written to from the computer. Proceed as follows:
Lock the display, see 3.2.2.91.
$Q sends the contents of the corresponding display line.
118
794 Basic Titrino
3.2 Remote control commands
3.2.2.82.
Info.Assembly.CycleTime
read only
Info.Assembly.ExV
read only
Inquiries regarding basic variables of the assembly: Cycle time in s, volume of
the active Exchange Unit in mL.
3.2.2.83.
Assembly.Bur.Rates.Forward.Selected
digital, analog
Assembly.Bur.Rates.Forward.Digital
0...150, max.
Assembly.Bur.Rates.Reverse.Selected
digital, analog
Assembly.Bur.Rates.Reverse.Digital
0...150, max.
Expel and aspirating rate.
Digital or analog control. With digital control, the inputted value applies (in
mL/min). "max." means maximum possible rate with the Exchange Unit in
current use.
Analog means rate control with the analog potentiometer on Titrino.
3.2.2.84. Assembly.Bur.Fill
$G starts the 'FILL' mode of the buret function.
$G, $H, $C
3.2.2.85.
Assembly.Bur.ModeDis
$G, $S, $H, $C
Assembly.Bur.ModeDis.Selected
volume, time
Assembly.Bur.ModeDis.V
0.0001...0.1...9999
Assembly.Bur.ModeDis.Time
0.25...1...86400
Assembly.Bur.ModeDis.VStop
0.0001...9999, OFF
Assembly.Bur.ModeDis.AutoFill
ON, OFF
Dispensing mode with parameters. The dispensing mode can only be started
and stopped via the RS Control. During a running dosification, no method can
be started at the Titrino.
.Selected: Dispensing of volume increments or during a preset time.
.Volume, .Time: Size of the volume increments or entry of time.
.VStop:
Limit volume for the dispensing.
.AutoFill: ON means automatic filling after every dispensing.
3.2.2.86.
Assembly.Meas.Status
Assembly.Meas.MeasInput
Assembly.Meas.Ipol
Assembly.Meas.Upol
ON, OFF
1, 2, Diff., Ipol, Upol, Temp
±127...1...+127
±1270...400...+1270
Measurement in assembly. The measuring function can only be started via RS
Control. When the measuring function is switched on, no method can be
started at the Titrino.
.Input:
Selection of the potentiometric measuring input 1, 2, diff., polarized electrodes or temperature.
.Ipol:
Polarization current in µA.
.Upol:
Polarization potential in mV, entry in steps of 10 mV.
3.2.2.87.
794 Basic Titrino
Assembly.Outputs.AutoEOD
ON, OFF
119
3.2. Remote control commands
Assembly.Outputs.SetLines
$G
Assembly.Outputs.SetLines.L0
active, inactive, pulse, OFF
up to .L 3
Assembly.Outputs.ResetLines
$G
Setting the I/O output lines.
.AutoEOD: The automatic output of the EOD (End of Determination) at the
end of the determination can be switched off. Thus, for example,
in conjunction with a Titrino several determinations can be performed in the same beaker. Before AutoEOD is switched on, line 3
must be set to "OFF".
.SetLines: With $G, all lines are set.
.SetLines.LX: Set the line LX. "active" means setting of a static signal, "inactive" means resetting of the signal, "pulse" means output of a
pulse of app. 150 ms, "OFF" means the line is not operated, see
also page 162.
Warnings:
• L2 is the EOD line. If you have "AutoEOD" set to "ON", an active
line 2 is set to "inactive" by the EOD pulse.
• L3 is the line of the activate pulse. An active line 3 is set to "inactive" by the activate pulse.
.ResetLines: Lines are set to the inactive status (= high).
3.2.2.88. Setup.Keycode
ON, OFF
ON means the key code of a key pressed on the Titrino is outputted. The key
code comprises 2 ASCII characters; table of the keys with their code, see
page 139. A keystroke of key 11 is sent as follows:
#11
The beginning of the message is marked by a space (ASCII 32).
3.2.2.89.
Setup.Tree.Short
ON, OFF
Setup.Tree.ChangedOnly
ON, OFF
Definition of the type of answer to $Q.
.Short:
With "ON", each path is sent with only the necessary amount of
characters in order to be unequivocal (printed in bold in this manual). A combination of .Short and .ChangedOnly is not possible.
.ChangedOnly:
Sends only the changed values, i.e. values which have
been edited. All paths are sent absolute, i.e. from the root.
3.2.2.90. Setup.Trace
ON, OFF
The Titrino automatically reports when a value has been confirmed with <enter> at the Titrino. Message, e.g.:
&SmplData.OFFSilo.Id1"Trace"
The beginning of the message is marked by a space (ASCII 32).
3.2.2.91.
120
Setup.Lock.Keyboard
Setup.Lock.Config
Setup.Lock.Parameter
Setup.Lock.SmplData
ON, OFF
ON, OFF
ON, OFF
ON, OFF
794 Basic Titrino
3.2 Remote control commands
Setup.Lock.UserMeth.Recall
ON, OFF
Setup.Lock.UserMeth.Store
ON, OFF
Setup.Lock.UserMeth.Delete
ON, OFF
Setup.Lock.Display
ON, OFF
ON means disable the corresponding function:
.Keyboard: Disable all keys of the Titrino
.Config:
Disable the <configuration> key
.Parameter: Disable the <parameter> key
.SmplData: Disable the <smpl data> key
.UserMeth.Recall: Disable "recall" in <user meth> key
.UserMeth.Store: Disable "store" in <user meth> key
.UserMeth.Delete: Disable "delete" in <user meth> key
.Display: Disable the display, i.e. it will not be written to by the device program of the Titrino and can be operated from the computer.
3.2.2.92.
Setup.Mode.StartWait
ON, OFF
Setup.Mode.FinWait
ON, OFF
Holding points in the method sequence. If they are "ON", the sequence stops
until "OFF" is sent. Switching the instrument on sets both nodes to OFF:
.StartWait: Holding point right after starting a method or submethod in TIP
(holding point after AutoInfo !".T.GC").
.FinWait: Holding point at the end a method or submethod in TIP (holding
point after AutoInfo !".T.F").
3.2.2.93.
Setup.SendMeas.SendStatus
ON, OFF
Setup.SendMeas.Interval
0.08...4...16200, MPList
.SendStatus: ON means the automatic transmission of measured values (see
3.2.2.95 and 3.2.2.96) in the inputted interval is active.
.Interval: Time interval (in s) for the automatic transmission of associated
measured values defined under points 3.2.2.95 and 3.2.2.96. The
inputted value is rounded off to a multiple of 0.08. The smallest
possible time interval depends on the number of measured values
which have to be sent, on the baud rate, on the load on the interface and on the type of device connection. With "MPList" the
measured values are sent at the time of their entry into the measured point list.
The automatic transmission is switched on/off with 'SendStatus'.
3.2.2.94. Setup.SendMeas.Select
Assembly, Titrator
Selection of the unit of which the measured values should be sent (3.2.2.95
or 3.2.2.96).
3.2.2.95.
Setup.SendMeas.Assembly.CyclNo
ON, OFF
Setup.SendMeas.Assembly.V
ON, OFF
Setup.SendMeas.Assembly.Meas
ON, OFF
Selection of the values from Assembly for the output in the set time interval
(see 3.2.2.93):
.CyclNo: Cycle number of the potential measurement. Together with the
cycle time (3.2.2.82), a time frame can be set up.
794 Basic Titrino
121
3.2. Remote control commands
The cycle number is set to 0 on switching on the instrument and it
is always incremented as long as the instrument remains
switched on.
.V:
Volume
.Meas:
Measured value associated to the cycle number.
The unit "assembly" must be preset (see 3.2.2.94).
3.2.2.96.
Setup.SendMeas.Titrator.CyclNo
ON, OFF
Setup.SendMeas.Titrator.V
ON, OFF
Setup.SendMeas.Titrator.Meas
ON, OFF
Setup.SendMeas.Titrator.dVdt
ON, OFF
Setup.SendMeas.Titrator.dMeasdt
ON, OFF
Setup.SendMeas.Titrator.dMeasdV
ON, OFF
Setup.SendMeas.Titrator.ERC
ON, OFF
Selection of the values from the titrator which are sent in the set time interval
(see 3.2.2.93, formats see 3.2.2.79):
.CyclNo: Cycle number. Together with the cycle time (3.2.2.82), a time
frame can be set up. The other data belong to the corresponding
cycle number. The cycle number is set to 0 at the start of a
method and it is incremented until the end of the method.
.V:
Volume.
.Meas:
Measuring value
.dVdt:
associated volume drift.
.dMeasdt: associated measured value drift.
.dMeasdV: associated 1st derivative of the titration curve.
.ERC:
ERC in DET.
The unit "titrator" must be preset (see 3.2.2.94).
3.2.2.97.
Setup.AutoInfo.Status
ON, OFF
Setup.AutoInfo.P
ON, OFF
Setup.AutoInfo.T.R
ON, OFF
Setup.AutoInfo.T.G
ON, OFF
Setup.AutoInfo.T.GC
ON, OFF
Setup.AutoInfo.T.S
ON, OFF
Setup.AutoInfo.T.B
ON, OFF
Setup.AutoInfo.T.F
ON, OFF
Setup.AutoInfo.T.E
ON, OFF
Setup.AutoInfo.T.H
ON, OFF
Setup.AutoInfo.T.C
ON, OFF
Setup.AutoInfo.T.O
ON, OFF
Setup.AutoInfo.T.N
ON, OFF
Setup.AutoInfo.T.Re
ON, OFF
Setup.AutoInfo.T.Si
ON, OFF
Setup.AutoInfo.T.M
ON, OFF
Setup.AutoInfo.T.EP
ON, OFF
Setup.AutoInfo.T.RC
ON, OFF
Setup.AutoInfo.I
ON, OFF
Setup.AutoInfo.O
ON, OFF
ON means that the Titrino reports automatically the moment the corresponding change occurs.
.Status:
Global switch for all set AutoInfo.
122
794 Basic Titrino
3.2 Remote control commands
.P
PowerOn: Simulation of power on (3.2.2.99). Not from mains.
Messages from node .T, Titrator:
.T.R
Ready: Status 'Ready' has been reached.
.T.G
Go: Instrument has been started.
.T.GC
GoCommand: Instrument (or submethod in TIP) has received a go
command.
.T.S
Stop: Status 'Stop' has been reached.
.T.B
Begin of sequence (or submethod).
.T.F
Final: End of determination (or submethod), the final steps will be
carried out.
.T.E
Error. Message together with error number, see page 82ff.
.T.H
Hold: Status 'Hold' has been reached.
.T.C
Continue: Continue after hold.
.T.O
Conditioning OK: EP reached (in SET with conditioning).
.T.N
Conditioning Not OK: EP not reached (in SET with conditioning).
.T.Re
Request: In the inquiry of an identification or the sample size after
start of titration.
.T.Si
SiloEmpty: Silo empty, i.e. the last line has been removed from
the silo memory.
.T.M
MeasList: Entry in the measuring point list (with DET, MET).
.T.EP
EPList: Entry into EP list (with DET, MET, SET)
.T.RC
Results have been recalculated.
Messages for changings in the I/O lines. If the changings are made simultaneously, there is 1 message. Pulses receive 2 messages: one message each
for line active and inactive.
.I
Input: Change of an input line.
.O
Output: Change of an output line (except 7, pin 2, for recorder
pulses).
If a change occurs that requires a message, the Titrino sends space (ASCII
32) and ! as an introducer. This is followed by the name of the device (see
3.2.2.55). Special ASCII characters in the device name are ignored. If no device name has been entered, only ! is sent. Finally the Titrino sends the information which node has triggered the message.
Example: !John".T.Si": The message was triggered from instrument "John",
node .T.Si
3.2.2.98.
Setup.Graphics.Grid
ON, OFF
Setup.Graphics.Frame
ON, OFF
Setup.Graphics.Scale
Full, Auto
Setup.Graphics.Recorder.Right
0.2...0.5...1.00
Setup.Graphics.Recorder.Feed
0.01...0.05...1.00
Change in the appearance and the format of the curve for the output. The settings are valid for both Titrino COM ports.
.Grid:
On/off switching of grid over curve.
.Frame:
On/off switching of frame surrounding the curve. If grid and frame
are switched off, the curve is printed faster as the print head does
not have to move to the end of the paper.
.Scale:
Type of scaling of the measured value axis: Full means that the
scale runs from the smallest up to the greatest measured point.
With auto, the smallest measured value is taken and the next
smaller tick defines the beginning of the scale; the next greater
tick to the greatest measured value is the end of the scale.
794 Basic Titrino
123
3.2. Remote control commands
.Right:
.Feed:
Relative specification of the width of the output medium (e.g. paper width) for the length of the measured value axis. 1 means the
measured value axis is plotted over the entire width of the paper
(largest possible width). In extreme cases, the writing of the right
tick may lie outside.
Length of the volume axis referred to the burette cylinder volume,
V(B) per cm (0.1 means, e.g. 1 mL/cm with a 10 mL Exchange
Unit). Depending on the printer, the measure in cm may not always be correct.
3.2.2.99. Setup.PowerOn
$G
Simulation of 'power on'. The device has the same status as after power on:
The cylinder is filled, error messages deleted and the current sample number
set to 0. The method last used is ready for operation.
3.2.2.100. Setup.Initialise
Setup.Initialise.Select
$G
ActMeth, Silo, Calib, Config,
Assembly, Setup, All
Setting of default values for the following areas:
ActMeth: Current method. Parameters, calculations, and assignments for
the data output, operands C01...C19.
Silo:
The silo memory is deleted. Same function as delete entire silo.
Calib:
pH calibration data for all measuring inputs.
Config:
All values under &Config.
Assembly: All values under &Assembly.
Setup:
All values under &Setup.
All:
Values of the entire tree (except silo and method memory).
The action must be triggered with &Setup.Initalise $G.
3.2.2.101. Setup.RamInit
$G
Initializes instrument, see page 147. All parameters are set to their default
value and error messages are cleared. The user and silo memories will be deleted. The user memory contains the default user methods from Metrohm.
3.2.2.102. Setup.InstrNo
$G
Setup.InstrNo.Value
serial number, 8 ASCII characters
Instrument identification for report output.
Set the value with &Setup.InstrNo $G .
3.2.2.103. Diagnose.Report
$G
Output of the report containing the adjustment parameters. The Titrino has to
be in its inactive basic state.
124
794 Basic Titrino
3.3 Properties of the RS 232 Interface
3.3 Properties of the RS 232 Interface
Data Transfer Protocol
The Titrino is configured as DTE (Data Terminal Equipment).
The RS 232 interface has the following technical specifications:
• Data interface according to the RS 232C standard, adjustable transfer parameters, see page 10.
• Max. line length:
512 characters
• Control characters:
CR (ASCII DEC 13)
LF (ASCII DEC 10)
XON (ASCII DEC 17)
XOFF (ASCII DEC 19)
• Cable length:
max. approx. 15 m
Start
7 or 8 Data Bit
Parity Bit
1 or 2 Stop Bit
Only a shielded data cable (for example, METROHM D.104.0201) may be
used to couple the Titrino with foreign devices. The cable shield must be
properly grounded on both instruments (pay attention to current loops; always
ground in a star-head formation). Only plugs with sufficient shielding may be
used (for example, METROHM K.210.0381 with K.210.9045).
3.3.1 Handshake
Software-Handshake, SWchar
Handshake inputs on the Titrino (CTS, DSR, DCD) are not checked.
Handshake outputs (DTR, RTS) are set by the Titrino.
As soon as a LF is recognized, the Titrino sends XOFF. It can then receive 6
extra characters and store them.
However, the Titrino also sends XOFF if its input buffer contains 60 characters. After this, it can receive maximum 22 extra characters (incl. LF ).
If the transmission is interrupted for the time of 4 characters after the Titrino
has sent XOFF, the string received earlier is processed even if no LF has been
sent.
794 Basic Titrino
125
3.3 Properties of the RS 232 Interface
Titrino as Receiver :
Titrino
external device
60 characters
max. 22
characters
LF
RxD
Data output
XOFF
Time of 4
characters
XON
XOFF
Data input
TxD
String is
processed
400 µs
Time
Titrino as Sender :
Titrino
external device
XOFF
XON
Data output
RxD
LF
Data input
TxD
max. 4
characters
Data output
disabled
Data output
enabled
Time
Software-Handshake, SWline
Handshake input ports on the Titrino (CTS, DSR, DCD) are not checked.
Handshake output ports (DTR, RTS) are set by the Titrino.
The Titrino is equipped with an input buffer that can accommodate a string of
up to 80 characters + CRLF. As soon as an LF is recognized, the Titrino sends
XOFF. After this, it can receive maximum 6 extra characters and store them.
The string sent previously is now processed by the Titrino. Afterwards, the Titrino sends XON and is again ready to receive.
126
794 Basic Titrino
3.3 Properties of the RS 232 Interface
Titrino as Receiver :
Titrino
external device
LF
Input Titrino disabled
LF
RxD
Data output
XON
XOFF
Data input
TxD
400 µs
String is
processed
Time
Titrino as Sender:
Titrino
external device
XOFF
Inquiry
LF
XON
Data output
RxD
1st line
Response LF
LF
Data input
TxD
Data output
disabled
Data output
enabled
Time
Titrino transmission can be stopped by external instruments with XOFF. After
XOFF is received the Titrino completes sending the line already started. If data
output is disabled for more than 3 s by XOFF, E43 appears in the display.
Hardware-Handshake, HWs
Titrino as Receiver :
Titrino
external device
DTR
RxD
DTR
LF
RxD
Time
794 Basic Titrino
127
3.3 Properties of the RS 232 Interface
Titrino as Sender:
Titrino
external device
RTS
RTS
CTS
CTS
LF
TxD
TxD
Time
The data flow can be interrupted by deactivating the CTS line.
Hardware-Handshake, HWf
All handshake inputs are checked at the Titrino, handshake outputs are set.
Titrino as Receiver :
Titrino
external device
DTR
RxD
DTR
LF
RxD
Time
Titrino as Sender:
Titrino
external device
RTS
RTS
DSR
DSR
DCD
DCD
CTS
CTS
TxD
LF
TxD
Time
The data flow can be interrupted by deactivating the CTS line.
128
794 Basic Titrino
3.3 Properties of the RS 232 Interface
3.3.2 Pin Assignment
RS232C Interface
Transmitted Data (TxD).
If no data are transmitted, the line is held in the “ON” condition. Data
will only be sent when CTS and DSR are in the ”ON” condition and
DCD is in the "OFF" condition.
Received Data (RxD)
Data are received only when DCD is "ON".
Request to Send (RTS)
ON condition: Titrino is ready to send data.
Clear to Send (CTS)
ON condition: Remote station is ready to receive data.
E2
Transmitted Data
E3
Received Data
E4
Request To Send
E5
Clear To Send
E6
Data Set Ready (DSR)
ON: Condition: The transmission line is connected.
Data Set Ready
E7
Signal ground (GND)
Signal Ground
Data Carrier Detect (DCD)
ON condition: The level of the received signal is within the tolerance
range (remote station is ready to send data).
Data Terminal Ready (DTR)
ON condition: Instrument is ready to receive data.
E8
Data Carrier Detect
E 20
Data Terminal Ready
Protective earthing
Direct connection from cable plug to the protective ground of the instrument.
Polarity allocation of the signals
- Data lines (TxD, RxD)
voltage negative (<-3 V): signal state ”ON”
voltage positive (>+3 V): signal state ”ZERO”
- control or message lines (CTS, DSR, DCD, RTS, DTR)
voltage negative (<-3 V): OFF state
voltage positive (>+3 V): ON state
In the transitional range from +3 V to -3 V the signal state is undefined.
Driver 14C88
according to EIA RS 232C specification
Receiver 14C89
"
"
794 Basic Titrino
129
3.3 Properties of the RS 232 Interface
Contact arrangement at plug (female) for RS 232C socket (male)
25
14
13
1
View of soldered side of plug
Ordering numbers:
K.210.9004 and K.210.0001
No liability whatsoever will be accepted for damage or injury caused by improper interconnection of instruments.
130
794 Basic Titrino
3.3 Properties of the RS 232 Interface
3.3.3 What can you do if the data transfer does not work?
Problem
Questions for remedial action
No characters can be received on a connected printer.
-
Are the instruments switched on and cables plugged in
correctly?
Is the printer set to ”on-line”?
Are baud rate, data bit and parity the same on both
instruments?
- Is the handshake set properly?
If everything seems to be ok, try to print a report with the key
sequence <PRINT><SMPL DATA><ENTER>. If this report
is printed out correctly, check if reports are defined in key
<DEF>.
No data transmission and the
display of the Titrino shows an
error message.
-
error 42: Transmission error. Is the printer set to "on-line"?
Is the connection cable properly wired?
error 43: Data output of the Titrino disabled for longer than 6
s by XOFF.
error 36-39: Receive error. Are the RS settings the same on
both devices?
The received characters are
garbled.
-
Wrong line spacing.
The printer does not emulate completely the preset mode.
Usually these problems arise with the IBM mode. Set the printer
to a different mode (e.g. Epson).
Printout of titration curve is not
ok. Other reports are printed ok.
Handshake is necessary for the printout of curves.
- Is your cable correctly wired? (The DTR of the printer has to
be connected to the CTS of the Titrino.)
- Set "HWs" for the handshake of the Titrino. Configure the
printer such that its DTR is set (possibly with DIP switches).
794 Basic Titrino
Are the RS settings the same on both devices?
Has the correct printer been selected?
Data transfer has been interrupted on the hardware side
during the printout of a curve. Re-establish connections and
switch printer off/on.
131
4.1 Error and special messages
4 Error messages, Troubleshooting
Data transfer inoperative See measures on page 131.
4.1 Error and special messages
XXX bytes missing
check electrode
check exchange unit
check T-sensor
data set reevaluation
division by zero
EP overflow
manual stop
meas.pt list overflow
missing EP
missing fix EP
no.EP not corresponding
no EP set
no meas.quantity
794 Basic Titrino
XXX bytes missing. For the storage of a method or a silo line
XXX bytes are missing or there is insufficient RAM for a TIP
sequence.
Remedy: <QUIT>. Delete methods no longer needed or use
fewer silo lines.
With polarized electrodes. There is a break or short circuit.
Possible causes and rectification of the fault:
- the electrode is not plugged in ⇒ plug it in
- the electrode is not immersed in the solution ⇒ immerse it
- the electrode is defective ⇒ use new electrode.
- the electrode cable is defective ⇒ use new cable.
The electrode test can be switched off under the <PARAM>
key.
Exit: Rectify fault or <STOP>.
The Exchange Unit is not mounted (properly).
Exit: Mount Exchange Unit (properly) so that the coupling
engages or <STOP>.
No temperature sensor is attached (with MEAS T or if the
temperature monitoring is active).
Exit: Connect Pt100 or Pt1000 or <STOP>.
Message if Titrino is reevaluating downloaded measuring point
lists.
The result could not be calculated as a divisor in the formula
was equal to zero.
Exit: Enter appropriate value.
In a DET or MET titration 9 EP's or more were found. The first 9
EP's will be listed.
Remedy: Recalculation of data with higher EP criterion.
The determination has been manually stopped.
Maximum 500 measured points can be stored.
Exit: Use start criteria or select larger time interval.
An EP needed for calculation in a formula is missing.
A fix EP needed for calculation in a formula is missing.
In DET or MET titrations, the number of EP's actually found
does not match the set windows: Exactly 1 EP per window has
not been found.
In SET, no EP has been set.
Exit: <STOP> and set EP.
In TIP a manual measurement (<MEAS/HOLD>) has been
performed without defining a measuring quantity.
Exit: <MEAS/HOLD> and define measured quantity.
133
4.1. Error and special messages
no method
no new com.var.
no new mean
no new silo result
no new temp.var.
no sequence
no titration data
not valid
outside
overrange
same buffer
save lines OFF
second TIP call
silo empty
silo full
stop EP reached
stop meas.val.reached
stop time reached
134
The method required by the sample data from the silo memory
or in a TIP sequence is not available in the method memory.
Exit: <CLEAR>.
The common variable could not be assigned as the result or
the mean value could not be calculated. The old value remains
in force.
No new mean value has been calculated as at least one
quantity stipulated for mean value calculations could not be
calculated.
No new silo result C24 or C25 could be stored as the assigned
quantity could not be calculated.
No new temporary variable C7X could be stored as the
assigned quantity could not be calculated.
No sequence is defined in TIP.
Exit: <CLEAR> and define sequence.
No curve can be printed as no data are available.
A value is not available.
The set fix EP is outside the measuring range.
The measuring range of ±2 V has been exceeded. Overrange
replaces the corresponding measured value (pH, U, I or
temperature).
Exit: Rectify error, <STOP> or >MEAS/HOLD>.
In the calibration sequence the voltage difference between the
first and second buffer is < 6 mV.
Exit: <QUIT> and change buffer or <STOP> (abort
calibration).
The function "save lines" is not active although a submethod of
TIP contains assignments to C24 or C25.
Exit: <CLEAR> and switch on "save lines" under <SMPL
DATA> key.
Warning: The results of this line will not be saved.
In TIP no further TIP can be called up as a submethod.
Exit: <CLEAR> and define new sequence.
The silo memory is switched in but empty and a titration has
been started. Corrective action: At least the first 1 silo line
before starting the first titration.
Exit: <CLEAR>.
The silo memory is full up. Corrective action: If you have filled
less than 99 silo lines, you can create more space by deleting
old methods no longer needed. 1 silo line needs 18...120
bytes.
Exit: <CLEAR>.
A DET or MET titration was stopped as the stop criterion "stop
EP" was reached.
A DET or MET titration was stopped as the stop measuring
value pH, U or I was reached.
SET has been stopped as the stop time has been reached.
794 Basic Titrino
4.1 Error and special messages
stop V reached
system error 3
TIP terminated
wrong sample
The determination has been stopped as the stop volume has
been reached.
The instrument adjustment data have been overwritten.
Exit: <CLEAR>. Default adjustment data are set. The error
message appears each time the instrument is switched on
until it has been readjusted (Metrohm service).
TIP has been terminated.
With SET, with preset titration direction the first measured
value is outside the end point.
Error messages in connection with the data transfer
If neither a computer nor a printer is attached, the report output at the end of the titration
must be switched off:
Receive errors:
E36
E37
E38
E39
Parity
Exit: <QUIT> and set corresponding quantity the
same on both instruments
Stop bit
Exit: <QUIT> and set corresponding quantity the
same on both instruments
Overrun error. At least 1 character could not be read.
Exit: <QUIT>
Overflow of the receive buffer of the Titrino (> 82
characters).
Exit: <QUIT>
Send errors:
E40
E41
E42
E43
794 Basic Titrino
DSR=OFF
DCD=OFF
CTS=OFF
Handshake unsatisfactory for more than 1 s.
Exit: <QUIT> Is the receiver switched on and ready
to receive?
The transmission of the Titrino has been interrupted
with XOFF for at least 3 s.
Exit: <QUIT>.
135
4.1. Error and special messages
E44
E45
136
The RS interface parameters are no longer the same
for both instruments.
The receive buffer of the Titrino contains an
incomplete string (missing LF). Transmission of the
Titrino is thus blocked.
Exit: Send LF or <QUIT>.
794 Basic Titrino
4.2. Diagnosis
4.2 Diagnosis
4.2.1 General
The 794 Basic Titrino is a very precise and reliable instrument. Thanks to its rugged construction it is virtually impossible for external mechanical or electrical influences to have
an adverse effect on its functions.
Although the occasional fault in the instrument can not be excluded completely, it is certainly much more likely that malfunctions are caused by wrong operation or handling or
through improper connections and operation with non-Metrohm instruments.
It is advisable in each case to isolate the fault with the rapid and easy to perform diagnostic tests. The customer thus need not call METROHM service until there is a true fault in
the instrument. In addition, with the aid of the numbering in the diagnostic program he
can provide the service engineer with much more accurate information.
In inquiries always quote the manufacturing (page 4) and program number (see configuration, page 23) and specify possible error displays..
4.2.2 Procedure
• The diagnostic steps must be performed in sequence and compared with the reactions of the 794 Basic Titrino (indented). In the "yes" case, continue with the next instruction.
• If the instrument does not show the expected reaction ("no" case), the appropriate
diagnostic step must be repeated to exclude an operating error. With repeated
wrong reactions, however, there is a strong possibility that a malfunction exists.
• The diagnostic steps allow re-entry into the test routine for repetition if the following
display appears:
diagnose press key 0...9
If the instrument is in a subprogram of the diagnostic routine: Press <Clear>.
If need be, switch the power off then on again after a few seconds. At the same time press key
<9> until the above display appears.
• If <Clear> has been pressed during the display of 'diagnose press key 0...9', the instrument returns to the user program.
• Error display: An error is shown in the display as follows:
error XX
error number
• If a fault causes the burette drive to stick at the top or bottom end of the cylinder,
see page 148, point 4.4.
794 Basic Titrino
137
4.2. Diagnosis
4.2.3 Equipment required:
−
voltage calibrator,
e.g. 1.773.0010 Metrohm pH Simulator
−
highly insulated interconnection cable 6.2108.060
−
cable 3.496.5070
−
exchange units, if possible with different cylinder volumes (or 3.496.0070 dummy exchange unit)
−
stop watch or watch with second hand
−
digital or analogue voltmeter (if need be, connect a calibrated recorder)
−
2 connecting cables with 4 mm banana plugs
−
test plug 3.496.8510 (necessary only if plug ‘Remote’ should be checked)
−
test plug 3.496.8480 (necessary only if plug ‘RS 232’ should be checked)
or 1.767.0010 Calibrated Reference for mV, pH, Ω µS, °C
4.2.4 Diagnosis steps
1
Prepare instruments for diagnostic test
• Power off.
• Disconnect all external connections (cables at rear, except mains cable and keyboard).
• Remove exchange unit.
• Power on and immediately press and hold the <9> key until the power up test pattern disappears.
diagnose press key 0...9
2
Perform display test
• Press <2>.
display test
• Press <Enter>.
Characters for a visual check of the display are generated on the eight lines.
Test sequence:
a) The display is cleared and overwritten from the left to the right with a dot pattern ( ▓ ▓ ▓
▓ ▓ ▓ ▓ ▓ ).
b) The display is cleared and both lines are written into with the letters A, B, C,…Z.
c) The complete character set is shown as a moving display. At the same time with
moving display the LED’s „COND.“, „STATISTICS“ and „SILO“ are swtiches on and off.
• The test sequence can be held and then continued at any time by pressing <5>.
• Block 2 is quit by pressing <Clear>.
diagnose press key 0...9
138
794 Basic Titrino
4.2. Diagnosis
keys test
• Press <Enter>.
keys test
matrix code
• If any key is now pressed (on the 6.2132.080 keypad or on the fron panel of the
794), the appropriate matrix code appears in the display.
Fig. 2
Fig. 1
Front panel 794
Keypad 794
• Block 1 is quit by pressing the <Clear> key twice.
diagnose press key 0...9
4
Cylinder code, date, time
• Put exchange unit or dummy on the Titrino and put the burette tip into a collecting
receptacle.
• Press <0>.
794 Basic Titrino
139
4.2. Diagnosis
date/time
cylinder code
• Press <Enter>.
date XX-XX-XX XX:XX:XX
code:D0
XX ml
activated dosing unit
mL-code
• Check date and time.
• Check whether the mL-code does correspond with the exchange unit placed or not.
For the sake of completeness, different exchange units can be inserted to check their mL code. If desired, the exchange unit can be removed again. If no exchange unit is inserted display does not show the mL-code but „check
exchange unit !“.
• Press <Clear>.
diagnose press key 0...9
5
Analogue output test
A voltage can be set at the analog output (sockets at D) using the kexpad. But this should not exceed ± 2000 mV. This voltage can also be used for the calibration of a connected recorder.
• Connect a voltage measuring instrument (voltmeter, DVM, recorder) to the analogue output (10).
• Press <3>.
analog output-1 test
• Press <Enter>.
analog output-1 test
V-out =
XXmV
Enter a voltage value in the range ± 2000 mV using the keypad. After the <ENTER> key has
been pressed, this value appears as a voltage at the analog output..
Read off value an the connected voltmeter and compare with the mV value on the display.
(Tolerance ± 2 mV)
• Press <Quit>.
• Disconnect voltmeter.
6
Motor timer test
• Press <6>.
motor-timer test
• Press <Enter>.
140
794 Basic Titrino
4.2. Diagnosis
pot.meter dV/dt  10?
• Turn knob ‘dV/dt’ to the right stop and press <Enter>.
Test sequence:
a) In a first step, the frequency of the RC oscillator (analogue rate) is tested over a period
of 1 second.
b) In a second step, the frequency of the quartz oscillator (digital rate) is tested over a
period of 1 second.
c) If no error is found, after about 3 s it appears
motor-timer test
o.k.
• Press <Clear>.
diagnose press key 0...9
7
Analogue input test
• Press <7>.
analog input test 1...5
7.1
Examination of highly insulated measuring inputs
• Connect ‘Ind I’ measuring input to a voltage calibrator (e.g. Metrohm 773 pH simulator) by means of a highly insulated cable (e.g. 6.2108.060). Set calibrator to 0 V.
• Press <1>.
Input 1
0.0 mV
Tolerance: ± 0.5 mV
• Set the calibrator voltage, on setting 'low ohmic' (with 773 = ~ 0.002 MΩ) to different values (e.g. +1500 mV) and compare with the displayed value.
Tolerance (with ± 1500 ÷ 2000 mV) ± 1 mV. Be aware of the calibrator's tolerance.
• Set simulator to high ohmic condition (with 773 = 1000 MΩ).
The displayed reading may vary slightly only (with 1500 mV ≤ 1 mV)
• Press <Clear>.
analog input test 1...5
• Disconnect simulator from ‘Ind I’ input and connect to ‘Ind II’ input.
• Press <2>.
794 Basic Titrino
141
4.2. Diagnosis
Input 2
XX mV
• Carry out the same measurements as with Input 1.
• Press <Clear>.
analog input test 1...5
• Short-circuit input ‘Ind I’ (e.g. with cable 3.496.5070).
• Press <3>.
Input 1-2
XX mV
The differencial voltage between inputs ‘Ind I‘ and ‘Ind II’ is displayed.
Example: 0 - (+)1500 mV = -1500 mV
• Remove cables from the inputs ‘Ind I’ and ‘Ind II’.
• Press <Clear>.
analog input test 1...5
7.2
To check Pt 100 / 1000 connection
• Connect a Pt 100 or Pt 1000 sensor, a resistor switch-box or a single resistor of 100
Ω or 1 kΩ, respectively, to sockets ‘Pt 100/1000’ by means of short cables.
• Press <4>.
Pt 100*
XX °C
(* or Pt 1000)
Tolerance: ± 0.5 °C (Note also tolerance of resistor switch-box).
The sensor allows automatic displaying of the room temperature. (The resistor values correspond to 0°C.)
• Press <Clear>.
analog input test 1...5
•
7.3
Remove cables and resistor switch-box.
Polarizer test
• Press <5>.
polarizer test
• Press <Enter>.
142
794 Basic Titrino
4.2. Diagnosis
dummy resistor 14.3kΩ ?
• Connect resistor switch-box (or suitable resistor 14.3 kΩ 0.1%) using 3.496.5070
cable to ‘Pol’ socket. Switch-box to 14.3 kΩ.
• Press <Enter>.
Test sequence:
1. An asterisk flashes during the test.
2. In case of an error an error message appears. (If for example the switch-box is not
connected, error 100 appears).
3. If no error is found, after about 15 s display shows
polarizer test
o.k.
• Press <Clear>.
analog input test 1...5
• Press <Clear>.
diagnose press key 0...9
• Remove cable and resistor switch-box.
8
External inputs and outputs
This test is meaningful only if the 794 Basic Titrino is used interconnected with other instruments via the 'Remote' connection. In addition, a 3.496.8510 test plug normally used in the repair service is required for this test. However, this
plug can also be purchased by customers under the above number.
For the sake of completeness, the procedure is described here. If a diagnostic test of the external inputs and outputs
is not required, continue with point 9.
PIN
Fig. 3
PIN
PIN
PIN
1  24
5  21
2  12
9  18
3  23
10  17
3  22
11  16
Connections in the 3.496.8510 test plug
• Press <4>
extern input/output test
• Press <ENTER>.
794 Basic Titrino
143
4.2. Diagnosis
I/O-test-connector?
• Insert the 3.496.8510 test plug in port B 'Remote'. (Do not switch off instrument!)
• Press <ENTER>.
Test sequence:
1. In case of an error an error message is displayed. If for example no test plug is connected, error message error 50
01HEX appears).
2. If no error is found, after about 1 s display shows
extern input/output o.k.
• Remove test plug.
• Press <CLEAR>.
diagnose press key 0...9
9
RS 232 test
A 3.496.8480 test plug normally used in the repair service is required for this test. However, this plug can also be
purchased by customers under the above number.
For the sake of completeness, the procedure is described here. If a diagnostic test of the RS 232 interface is not required, continue with point 10.
TxD 2
RxD 3
DCD 8
DTR 20
DSR 6
RTS 4
CTS 5
Fig. 4
Connections in the 3.496.8480 plug
• Press <5>.
RS232 test
• Press <ENTER>.
144
794 Basic Titrino
4.2. Diagnosis
RS232 test-connector?
• Insert the 3.496.8480 test plug in 'RS 232' port.
• Press <Enter>.
Test sequence:
1. In case of an error an error message is displayed. If for example no test plug is connected, error message error 68 appears).
2. If no error is found, after about 5 s display shows
RS232 test
o.k.
• Remove test plug.
• Press <Clear>.
diagnose press key 0...9
10
Spindle drive and stopcock changeover
• Press <Clear>.
The Titrino fills (only if an exchange unit is inserted)
The Titrino gets out of the diagnosis menu and returns to the user program.
• Remove exchange unit.
• Check spindle zero position, see Fig. 5.
0.2 - 0.6 mm
Fig. 5
Fig. 6
The spindle must be 0.2 - 0.6 mm below the edge of the sliding plate.
The bar of the stopcock coupling must be exactly parallel to the lateral edges of the MPT
Titrino, see Fig.6.
• Reinsert Exchange Unit.
Titrino fills.
The display of before reappears.
• Knob 'dV/dt' to right stop.
• Press the <DOS> key (on instrument) until the piston rod reaches the top and at the
same time measure the time from start to end.
XXX X
********
cylinder empty !
794 Basic Titrino
mind selected language!
145
4.2. Diagnosis
Spindle remains at maximum position. The transit time of the spindle is 20 s.
• Measure spindle lifting (can be performed only if the 3.496.0070 Dummy Exchange
Unit is inserted or the locking switch (in right hole) is carefully operated with a
screwdriver after removal of the Exchange Unit).
From the start point, the spindle travels 80 mm. Instead of the spindle height, the expelled
volume can be measured (corresponds to max. vol. of Exchange Unit used).
• Press <FILL> (on instrument) and simultaneously measure the time until the Titrino
is again in the 'ready' position.
Times for filling:
per stop cock cycle
for filling
1s
20 s (Tolerance: 10 %)
The following generally holds: Spindle and stopcock must move at a constant speed
(noise!). In the filling setting, the stopcock coupling must position the lever of the Exchange
Unit correctly at the left stop (with virtually no play and without sticking).
• Set potentiometer 'dV/dt' to left stop.
• Press <DOS> (on instrument) at same time and use a stopwatch to measure the
time for 1/10 of the cylinder volume to be expelled. The time should be ca. 90 ... 110
s.
• Set potentiometer 'dV/dt' to right stop.
• Press <FILL>.
11
Setting up original arrangement
Reconnect all peripherals disconnected at the start of the diagnostic routine and perform
a short function test with these.
146
794 Basic Titrino
4.3. Initialise and test RAM
4.3 Initialise and test RAM
On the odd occasion large disturbing signals (e.g. mains spikes, lightning, etc.) can have
an adverse effect on the processor functions and hence lead to a system crash. After
such a crash the RAM area must be initialised. Although the basic instrument data remain
stored, the RAM initialisation should be performed only when necessary since the stored
user data (configuration, parameters, calculation variables, etc.) are cleared as a result.
•
Power OFF
•
Power ON and simultaneously press keys <DOS> and <STOP/FILL>.
RAM Init.
•
Press <START>.
confirm RAM Init.
•
Press <START>.
RAM Init. activ
RAM is tested and initialised. Subsequently a warm start is executed.
The lost data of the user memory must now be reentered.
If 'system error 3' appears in the display, <Clear>can be used to return to the instrument
program. The initialisation values are loaded automatically. The instrument thus remains
capable of measurement. However, possibly a small loss in accuracy must be anticipated. A new optimum adjustment can be performed by Metrohm service. The error message 'system error 3' always appears after the instrument is switched on until this adjustment has been performed.
794 Basic Titrino
147
4.4. Releasing a locked spindle with inserted Exchange Unit
4.4 Releasing a locked spindle with inserted Exchange Unit
• The burette drive may very occasionally jam at the top or bottom end of the cylinder. If jamming occurs at the top or when the drive is out of function, the Exchange
Unit can no longer removed. In this case, it is necessary to proceed as follows:
2 screws (M4 countersunk)
2 screws (M3 fillister head)
knob
edge of bench
Fig. 7
• Disconnect instrument from power supply!
• Remove control knob
• Place instrument over edge of bench to allow the M3 screws to be removed (Fig. 7)
• Remove M4 screws
• Lift off top part of instrument together with Exchange Unit in the manner shown by
the arrow
The electronic circuits are now accessible!
On no account touch these!
• Remove spindle from mechanical stop by turning the large gear wheel. (In case that
the motor is inoperative, position spindle by hand to zero position.)
148
794 Basic Titrino
5.1 Setting up and connecting the instruments
5 Preparations
The mains cables supplied with the instrument are three-core and
equipped with a plug with an earthing pin. If a different plug has to
be fitted, the yellow/green lead must be connected to the protective
earth. Each break in the earthing inside or outside the instrument
can make it a hazard.
When the instrument is opened or if parts of it are removed, certain
components may be live if the instrument is connected to the mains.
The mains cable must therefore always be unplugged when certain
adjustments are made or parts replaced.
5.1 Setting up and connecting the instruments
5.1.1 Titrino with Stirrer or Titration Stand
794
A
C
B
D
Stirrer cable
Stirrer or Ti Stand
6.2132.080 Keypad
The 802 Rod Stirrer, the 727, or the 703 Ti Stand with 6.2108.100 cable can also be connected instead of the 728 Magnetic Stirrer.
794 Basic Titrino
149
5.1. Setting up and connecting the instruments
5.1.2 Connection of a printer
Printer
Seiko
DPU-414
Custom
DP40-S4N
A variety of printers can be connected to the RS232 interface of the
Titrino. If you connect a printer other than one of those mentioned
below, ensure that the Epson mode is emulated or that it uses the international character set following the IBM Standard Table 437 and
IBM-compatible graphics control characters.
If a balance is connected at the same COM of the Titrino as a
printer, you need the 6.2125.030 Adapter. The printer must be
pluged into the "data out" receptable of the adapter. It can be operated only with the simple hardware handshake (HWs) or without
handshake.
Cable
Settings on Titrino
Settings on Printer
6.2125.130 baud rate:
9600
data bit:
8
stop bit:
1 none
parity:
none
handshake:
HWs
send to:
Seiko
6.2125.130 baud rate:
9600 none, pre-set on Metrohm version
data bit:
8 IDP-560 EMULATION
FONT MAP =GERMANY
stop bit:
1 PRINT=REVERSE
parity:
none LITTLE
CODE=VOID
handshake:
HWs CR
CR AFTER B :FULL=VOID
send to:
Citizen CR ON b. EMPTY=VALID
BUFFER 1K BYTE
BAUD RATE=9600
PROTOCOL=8,N,1
FLOW CONTROL CTS-RTS
Citizen
iDP562 RS
6.2125.050
Epson LX6.2125.050
300
HP Desk Jet 6.2125.050
with serial
interface
HP Desk Jet 2.145.0330
with parallel RS232/
interface
Parallel
Converter
150
baud rate:
data bit:
stop bit:
parity
handshake:
send to:
as above, but
send to:
baud rate:
data bit:
stop bit:
parity
handshake:
send to:
baud rate:
data bit:
stop bit:
parity
handshake:
send to:
9600
8
1
none
HWs
Citizen
Epson
9600
8
1
none
HWs
HP
9600
8
1
none
HWs
HP
ON
1
2
3
4
5
6
7
8
9
10
SSW1
see printer manual
A:
A4 paper
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
B:
see printer manual
794 Basic Titrino
5.1 Setting up and connecting the instruments
5.1.3 Connection of a balance
The following balances can be connected to the RS232 output of the
Titrino:
Balance
Cable
Sartorius MP8, MC1
6.2125.070
Shimadzu BX, BW
6.2125.080
Settings on
Ohaus Voyager, Explorer,
Analytical Plus
Titrino:
Balance:
balance
delimiter
SARTORIUS
CR+LF
from Ohaus: AS017-09 (Ohaus parts number)+
6.2125.170
Settings on
Titrino:
Balance:
balance
SET BALANCE
INTERFACE
BAUD RATE
DATA BITS
PARITY
STOP BITS
SARTORIUS
9600
8
none
1
Mettler AB, AG (LC-RS25)
in the scope of delivery of the balance
Mettler AM, PM
6.2146.020
additionally from Mettler:
ME 47473 Adapter and ME 42500 hand switch or ME
46278 foot switch
Mettler interface 016
Cable in scope of delivery of interface 016: red lead
to pin 3, white lead to pin 7 of the 25-pin connector
25-pole/9-pole adapter
Mettler interface 011 or 012
6.2125.020
Mettler AT
6.2146.020
Mettler PG, AB-S
6.2134.120 + 6.2125.170
Mettler AX, MX ,UMX
6.2134.120 + 6.2125.170
AND Models ER-60, 120, 180, 182 6.2125.020
Models FR-200, 300
Models FX-200, 300, 320
with RS232 interface (OP-03)
Precisa, balances with RS232Cinterface
6.2125.080
The balance type must be preselected at the Titrino with the
<CONFIG> key.
Balance and printer can be connected at the same time with the aid
of the 6.2125.030 adapter. The balance must then be plugged into
the "data in" receptable of the adapter.
794 Basic Titrino
151
5.1. Setting up and connecting the instruments
The weight is transferred as a number with up to 6 digits, sign and
decimal point. Units and control characters sent by the balance are
not transmitted.
With the aid of a special input unit supplied by the balance manufacturer, in addition to the weight identifications and methods can be
inputted from the balance. For this, the address of the identifications
and method, resp. must be preselected on the input unit.
Balance
Sartorius
Mettler (AT)
Method
METH or 27
D (Mthd)
Id1
ID.1 or 26
C (ID#1)
Id2
ID.2 or 24
B (ID#2)
Id3
C-20 or 23
A (c20)
If the balance works only with 7 bit and the printer with 8 bit and if
they are at the same Titrino, the balance has to bet to "space parity"
and Titrino/printer to 8 bit, "no parity".
5.1.4 Connection of a Sample Changer
794
A
C
B
D
730/760
6.2141.020 Cable
With 6.2141.030 cable (instead of 6.2141.020), two Titrinos can be
connected to the 730 or 760 Sample Changer at the same time.
• The "Remote" socket allows not only connection of a sample
changer but also additional control functions. Pin assignment of
the "Remote" socket and control possibilities, see page 161f.
• If a calibration has to be performed with the sample changer, the
calibration parameter "sample changer:" must be set to "ON".
• In connections with the sample changer, "auto start" should be
set to "OFF" in the <CONFIG> key. The start command is given
by the Sample Changer.
152
794 Basic Titrino
5.1 Setting up and connecting the instruments
5.1.5 Connection of a recorder
The recorder is connected to the analog output of the Titrino.
794
A
B
C
D
Recorder
The signal at the analogue output can be preselected on the Titrino (key <CONFIG>,
">peripheral units", "curve:"):
Preselection at
Titrino
U
Meaning
Voltage
dU/dt
Measured value drift
V
dV/dt
U(rel)
Volume
Volume drift
Control deviation
T
794 Basic Titrino
Temperature
Resolution,
Signal at analogue output
pH = 0.00:
− 700mV
pH = 7.00:
0 mV
pH = 14.00:
+700 mV
U = + 1 mV:
+ 1 mV
U = − 1 mV:
− 1 mV
I = + 1 µA:
+ 10 mV
I = − 1 µA:
− 10 mV
T =
0 °C:
0 mV
T = + 1 °C:
+ 10 mV
T = − 1 °C:
− 10 mV
1 mV/min:
1 mV
1 °C/min:
1 mV
1 µA/min:
10 mV
1 Zylindervolumen:
2000 mV
100 µL/min:
1000 mV
100 mV
∆pH = 1:
1 mV
∆U = 1 mV:
10 mV
∆I = 1 µA:
10 mV
∆T = ±1 °C:
0 mV
T
= 0 °C:
153
5.1. Setting up and connecting the instruments
5.1.6 Connection of a computer
794
A
C
B
D
Cable 6.2125.060 (+6.2125.010)
PC
Preselections on the Titrino:
RS232 settings: ......................................... depend on the control program of the computer
Send to:............................................................................................................................ IBM
Vesuv 3.0, PC program for data acquisition and method backup
for up to 64 devices ...................................................................................... 6.6008.200
154
794 Basic Titrino
5.2 Connection of electrodes, preparing titration vessel
5.2 Connection of electrodes, preparing titration vessel
Rear panel:
Ref
Ref
Connection for separate reference electrode.
Input is free when a combined electrode is used.
Pol
Connection of polarized electrodes.
If measured quantities Ipol or Upol are selected, this
measuring input is automatically active.
Ind I
Connection of pH, redox, ISE electrodes.
Combined or separate electrodes. Select measuring input
1 or 2 in the Titrino.
Important:
The measuring inputs 1 and 2 have a common reference.
They may therefore be used as a differential measuring
input see below. However, only one reference electrode
can be used in the same vessel!
Pol
Ind I
Ind II
Ind II
Pt 100/1000
Pt100/
1000
Connection of a temperature sensor Pt100 or Pt1000..
Differential potentiometry
In potentiometric measurements in media of low conductivity, e.g. in
organic solvents, high-impedance electrode assemblies such as pH
electrodes record noise voltages which arise from stray electrostatic
and electromagnetic fields. Particularly high field strengths occur
through friction at insulators such as plastic floors, synthetic clothing,
etc.; conditions which can appear in every normal laboratory environment.
Problems of this type can be solved by measurement using a differential amplifier. Here, the indicator and reference electrode are each
connected to a high-impedance measuring input. It is important to
ensure that both electrodes have identical shielding and are thus
symmetrical with regard to the recording of noise signals. An auxiliary electrode provides the electrical connection between the reference point of the amplifier circuit and the measurement solution.
Recommended electrodes:
Meas.input
Ind I
Ind II
Ref
794 Basic Titrino
Manual determinations
6.0133.100 pH Glass electrode
6.0729.100 double-shielded
Ag/AgCl reference electrode
6.0301.100 auxiliary electrode
Sample Changers
6.0130.100 pH Glass electrode
6.0729.110 double-shielded
Ag/AgCl reference electrode
6.0302.110 auxiliary electrode
155
5.2. Connection of electrodes, preparing titration vessel
Practical tips
• Glass electrodes should be preconditioned in the solvent used for
ca. 1 hour.
• If the potential jump after the first dispensing step is too large, a
small start volume may help.
• As an "auxiliary electrode", the 6.1808.030 burette tip with earthing
may be used in some cases. Use burette tips without antidiffusion valve!
156
794 Basic Titrino
5.2 Connection of electrodes, preparing titration vessel
Setting up the titration vessel
The titration vessel is set up as shown below. During a titration, it is
important to ensure that the solution in contact with the electrode is
thoroughly mixed. This is achieved by
• efficient stirring. But it should not be too fast, otherwise the stirrer
vortex will suck in air bubbles and CO2 or O2 can disturb the titration.
• placing the buret tip according to the drawing below for maximum
distance between the adding of the titrant and the electrode.
Stirrer
Electrode
Buret
Pay attention on the direction of rotation of the stirrer!
794 Basic Titrino
157
6.1. Technical specifications
6 Appendix
6.1 Technical specifications
Modes
DET: Dynamic Equivalence Point Titration
MET: Monotonic Equivalence Point Titration
SET: Set End point Titration
MEAS: Measurement
CAL: pH calibration
TIP: Links commands to titration procedure
Measuring inputs
2 high-impedance measuring inputs for pH, redox and ISE
electrodes.
1 reference input for a separate reference electrode. May
also be used as a differential amplifier.
1 measuring input for polarized electrodes.
1 measuring input for temperature sensor Pt100 or Pt1000.
Measuring range
pH value (pX)
Voltage
Current
Temperature
0...±20.00, resolution 0.01
0...±2000 mV, resolution 1 mV, error limit 0.1 % fullscale
0...±200 µA, resolution 1 µA
–150.0...+450.0 °C, resolution 1 °C
Polarizer
Ipol
Upol
0...±127 µA, resolution 1 µA
0...±1270 mV, in steps of 10 mV
Measuring amplifier (at 25 °C and Titrino warmed-up)
Input resistance
>1013 Ω
Offset current
<3 ∗ 10–13 A
Deviation of offset voltage
15 µV/K
158
Dosification
Volume of buret cylinder
Resolution
Titrating burets
Auxiliary burets
1, (2), 5, 10, 20 or 50 mL
10 000 steps per buret cylinder
1 internal buret
2 additional burets: 776 or 765 Dosimat
Materials
Housing
Keypad cover
Polybutyleneterephthalate (PBTP)
Polycarbonate (PC)
794 Basic Titrino
6.1 Technical specifications
Display
LCD, 2 lines of 24 characters each
Height of characters 5 mm
LED back-lit
Internal memory
Method memory for up to 100 methods.
Data bank with 17 Metrohm methods.
Silo memory for sample data and results
RS232 interface
for printer, balance or computer connection: completely
controllable from external control unit
Remote input/output lines for Sample Changer, robot connection, etc.
Analog output
Output signal
Signal at analogoutput
Ambient temperature
Nom. operation range
Storage
Transport
Safety specifications
794 Basic Titrino
-2000 ... 2000 mV
depending on preselection:
U (measuring value)
dU/dt (measured value drift)
V (volume)
dV/dt (volume drift)
U(rel) (control deviation at SET)
T (temperature)
1 mV (12 Bit), see also page 153
5 ... 40 °C
– 20 ... 60 °C
– 40 ... 60 °C
Designed and tested in accordance to IEC publication
61010-1, safety class I. This manual contains information
and warnings which have to be followed by the user to ensure safe operation and to retain the apparatus in safe
condition.
159
6.1. Technical specifications
Mains connection
Voltage
Frequency
Power consumption
Fuse
100, 117, 220/230, 240 V (switchable)
50 ... 60 Hz
15 W
Thermal fuse
Dimensions with Exchange Unit
Width
150 mm
Height
450 mm
Depth
275 mm
Weight, incl. keypad
160
app. 3.6 kg
794 Basic Titrino
6.2 Pin assignment of the "Remote" socket
6.2 Pin assignment of the "Remote" socket
external
Inputs
Function
+5 V
pin 21 (Input 0)
Start
pin 9 (Input 1)
Stop
+5 V
+5 V
tp
pin 22 (Input 2)
Enter
pin 10 (Input 3)
Clear
tp > 100 ms
Functions see page 163
+5 V
Are not used in titration
sequences
+5 V
pin 23 (Input 4)
+5 V
Sample
ready
pin 11 (Input 5)
+5 V
pin 24 (Input 6)
not used
+5 V
pin 12 (Input 7)
Outputs
794 Basic Titrino
pin 5 (Output 0)
Ready
inactive
pin 18 (Output 1)
Conditioning ok,
active if Cond.ok
pin 4 (Output 2)
Titration,
active during titration
161
6.2. Pin assignment of the "Remote" socket
Outputs
pin 17 (Output 3)
End of determination
EOD
pin 3 (Output 4)
L4 in TIP
pin 16 (Output 5)
Error,
active with errors
pin 1 (Output 6)
Activate pulse, see page 163.
L6 in TIP
pin 2 (Output 7)
Pulses for recorder (tp=150 µs)
10 000 per buret cylinder
For all outputs:
VCE0 = 40 V
IC
= 20 mA
tPulse > 100 ms
Functions see page 163.
Voltage
+5 V
pin 15
I ≤ 75 mA
0V
pin 14
0 V: active
5 V: inactive
pin 25
Ordering numbers for plug:
K.210.9004 (shell) and K.210.002
No liability whatsoever will be accepted for damage caused by improper interconnection of instruments.
162
794 Basic Titrino
6.2 Pin assignment of the "Remote" socket
6.2.1 Lines of the "Remote" socket during the titration
794 Basic Titrino
163
6.2. Pin assignment of the "Remote" socket
6.2.2 Possible configurations of the activate pulse in SET and
CAL
164
794 Basic Titrino
6.3 User methods
6.3 User methods
6.3.1 General
The methods are stored in the user memory ready for use. They can be loaded, modified
and overwritten.
If the result should have another unit, you need to adjust the calculation constants using
the key <C-FMLA>.
Stop volumes or other stop conditions should be entered depending on sample.
If a printer is connected, the methods should be completed with report instructions (key
<DEF>).
The following methods are available:
'um
794 Titrino
01102
Datum 2002-01-03
Zeit
user method
794.0010
15:16
bytes
DET
pH
Titer_pH
192
DET
U
Blank
178
DET
U
Chloride
234
MET
U
TAN-TBN
220
MET
U
Diazo
208
MET
Ipol
Br-Index
226
DET
U
Sapon.No
170
DET
U
Ca-Mg
278
DET
U
EDTA-NTA
216
DET
U
Metals
190
DET
U
Perox.No
172
SET
pH
Form.Pre
88
SET
pH
Form.Det
100
FormolNo
186
TIP
DET
pH
P2O5-1
158
DET
pH
P2O5-2
138
TIP
P2O5Fert
164
Freie Bytes
6856
------------
794 Basic Titrino
165
6.3. User methods
6.3.2 "Titer_pH"
'pa
794 Titrino
01102
794.0010
date 2002-01-03
time 09:34
0
DET pH
Titer_pH
parameters
>titration parameters
meas.pt.density
4
min.incr.
10.0 µl
titr.rate
max. ml/min
signal drift
50 mV/min
equilibr.time
26 s
start V:
OFF
pause
0 s
meas.input:
1
temperature
25.0 °C
>stop conditions
stop V:
abs.
stop V
20 ml
stop pH
OFF
stop EP
9
filling rate
max. ml/min
>statistics
status:
ON
mean
n=
5
res.tab:
original
>evaluation
EPC
5
EP recognition:
all
fix EP1 at pH
OFF
pK/HNP:
OFF
>preselections
req.ident:
OFF
req.smpl size:
value
activate pulse:
OFF
-----------'fm
794 Titrino
01102
794.0010
date 2002-01-03
time 09:34
0
DET pH
Titer_pH
>calculations
Titer=C00*C01/C02/EP1;4;
C00=
1.0
C01=
10000
C02=
204.23
------------
166
The titer is calculated as a factor without dimension out of 5 determinations and stored
as common variable C31. It can therefore be
used directly by subsequent methods.
Electrode:
6.0232.100 combined glass pH electrode, at
measuring input 1.
Titrant:
c(NaOH) = 0.1 mol/L (free of carbonate)
Sample:
Weigh in app. 300 mg potassium hydrogen
phtalate (PHP). Dried 2 h at 105 °C, diluted in
40 mL dist. Water (free of carbonate).
Reference:
METROHM Application Bulletin Nr. 206:
– Result (Titer) as a digit without dimension
–
Sample size PHP in g
– Theoretical consumption for 1 mol PHP
– Molar mass PHP
794 Basic Titrino
6.3 User methods
6.3.3 "Blank"
'pa
794 Titrino
01102
794.0010
date 2002-01-03
time 09:38
0
DET U
Blank
parameters
>titration parameters
meas.pt.density
4
min.incr.
10.0 µl
titr.rate
max. ml/min
signal drift
50 mV/min
equilibr.time
26 s
start V:
OFF
pause
0 s
meas.input:
1
temperature
25.0 °C
>stop conditions
stop V:
abs.
stop V
30 ml
stop U
OFF mV
stop EP
9
filling rate
max. ml/min
>statistics
status:
ON
mean
n=
3
res.tab:
original
>evaluation
EPC
5
EP recognition:
all
fix EP1 at U
OFF mV
pK/HNP:
OFF
>preselections
req.ident:
OFF
req.smpl size:
OFF
activate pulse:
OFF
-----------'fm
794 Titrino
01102
794.0010
date 2002-01-03
time 09:38
0
DET U
Blank
>calculations
Blank=EP1/C01;3;ml
C01=
1
------------
794 Basic Titrino
Treat the "blank sample" in the same way as
you treat your real samples. Can be used e.g.
for the methods Sapon.No. and Perox.No,
see pages 172 and 176.
The blank value is stored as common variable
C30 and can therefore be used directly by
subsequent methods.
Reference:
METROHM Application Bulletin Nr. 210:
– Result as reagent consumption in mL
– Division factor if multiple quantities of solvent are
used for the blank determination.
167
6.3. User methods
6.3.4 "Chloride"
'pa
794 Titrino
01102
794.0010
date 2002-01-03
time 09:40
0
DET U
Chloride
parameters
>titration parameters
meas.pt.density
4
min.incr.
10.0 µl
titr.rate
max. ml/min
signal drift
50 mV/min
equilibr.time
26 s
start V:
OFF
pause
0 s
meas.input:
1
temperature
25.0 °C
>stop conditions
stop V:
abs.
stop V
99.99 ml
stop U
OFF mV
stop EP
1
filling rate
max. ml/min
>statistics
status:
OFF
>evaluation
EPC
5
EP recognition:
all
fix EP1 at U
OFF mV
pK/HNP:
OFF
>preselections
req.ident:
OFF
req.smpl size:
all
activate pulse:
OFF
-----------'fm
794 Titrino
01102
794.0010
date 2002-01-03
time 09:40
0
DET U
Chloride
>calculations
Chloride=EP1*C01*C02*C03/C00;2;ppm
NaCl=EP1*C04*C05*C06/C00;2;%
C00=
1.0
C01=
0.01
C02=
35.45
C03=
1000
C04=
58.44
C05=
0.1
C06=
0.1
------------
168
Electrode:
6.0430.100 Ag-Titrode at measuring input 1.
Titrant:
c(AgNO3) = 0.01 mol/L for low Cl- contents,
e.g. in tap water
c(AgNO3) = 0.1 mol/L for higher Cl- contents,
e.g. in food
Sample:
Dissolve sample and add HNO3.
Remarks:
Select the appropriate formula. The other may
be deleted.
Reference:
METROHM Application Bulletin Nr. 130
Content of Cl- in ppm
Content of table salt in %
Sample size in g
Concentration of titrant
Molar mass of Cl
Factor for ppm
Molar mass of NaCl
Concentration of titrant
Factor for %
794 Basic Titrino
6.3 User methods
6.3.5 "TAN-TBN"
Determination of the acid number according to ASTM D 5664-95 resp. of the base number according to ASTM D 2896-88.
Electrodes: 6.0102.102 pH glass electrode at measuring input 1 ("Ind I")
6.0729.100 Ag/AgCl reference electrode (outer elektrolyte solution LiCl in sat. ethanol) at measuring input 2 (Ind II")
6.0301.100 Pt-Electrode at measuring input "Ref"
Differential input
Optional a Solvotrode can be used, in this case select meas.input: 1 in the method.
TAN
6.0229.100 Solvotrode at measuring input 1 ("Ind I")
6.2320.000 elektrolyte c(TEA-Br) = 0.4 mol/L in ethylene glycol
TBN
6.0229.100 Solvotrode at measuring input 1 ("Ind I")
6.2312.000 elektrolyte diluted 1:1 with ethanol (ca. 2 mol/L LiCl in ethanol)
TAN titrant: c(KOH) = 0.1 mol/L in isopropanol/methanol (e.g. Merck No. 105544).
TBN titrant: c(HClO4) = 0.1 mol/L in acetic acid.
TAN solvent: toluene/isopropanol/H2O 500:495:5
TBN solvent: acetic acid/toluene 1:1
Sample: 0.1 – 10 g sample in 50 – 125 mL solvent.
'pa
794 Titrino
01102
794.0010
date 2002-01-03
time 09:42
0
MET U
TAN-TBN
parameters
>titration parameters
V step
0.10 ml
titr.rate
max. ml/min
signal drift
OFF mV/min
equilibr.time
50 s
start V:
OFF
pause
100 s
meas.input:
diff.
temperature
25.0 °C
>stop conditions
stop V:
abs.
stop V
10 ml
stop U
OFF mV
stop EP
9
filling rate
max. ml/min
>statistics
status:
OFF
>evaluation
EPC
20 mV
EP recognition:
last
fix EP1 at U
OFF mV
pK/HNP:
OFF
>preselections
req.ident:
OFF
req.smpl size:
value
activate pulse:
OFF
-----------'fm
794 Titrino
01102
794.0010
date 2002-01-03
time 09:42
0
MET U
TAN-TBN
>calculations
TAN-TBN=(EP1-C01)*C02*C03/C00;2;mg/g
C00=
1.0
C01=
0
C02=
0.1
C03=
56.106
-----------794 Basic Titrino
Remarks:
- Store glass electrode in dist. water over
night. Before titrating, brecondition it in
solvent during 10…30 min.
- ASTM requires an equilibration time of 100
s between volume increments. In most
cases it is possible to titrata with shorter
equilibration times.
- If fix end points are evaluated, the voltage
value to be set has to be determined with
buffers.
Reference:
METROHM Application Bulletin Nr. 80:
Differential potentiometry, see page 155.
Makes sure that the sum value is evaluated.
– Result in mg KOH per g sample
– Sample size in g
– Consumption of blank sample in mL
– Normality of the titrant (0.1*titer)
– Molar mass of KOH
169
6.3. User methods
6.3.6 "Diazo"
Diazotation of sulfonamides and primary
amines.
'pa
794 Titrino
01102
794.0010
date 2002-01-03
time 09:43
0
MET U
Diazo
parameters
>titration parameters
V step
0.10 ml
titr.rate
max. ml/min
signal drift
OFF mV/min
equilibr.time
20 s
start V:
abs.
start V
0.5 ml
dos.rate
max. ml/min
pause
80 s
meas.input:
1
temperature
25.0 °C
>stop conditions
stop V:
abs.
stop V
6.00 ml
stop U
OFF mV
stop EP
9
filling rate
max. ml/min
>statistics
status:
OFF
>evaluation
EPC
30 mV
EP recognition:
greatest
fix EP1 at U
OFF mV
pK/HNP:
OFF
>preselections
req.ident:
OFF
req.smpl size:
value
activate pulse:
OFF
-----------'fm
794 Titrino
01102
794.0010
date 2002-01-03
time 09:43
0
MET U
Diazo
>calculations
Content=EP1*C01*C02*C03/C00;2;%
C00=
1.0
C01=
1
C02=
1
C03=
0.1
------------
170
Electrode:
6.0341.100 Pt-Titrode, at measuring input 1
Titrant:
c(NaNO2) = 0.1 mol/L.
Solvent:
w(HBr) = 0.3 (30%)
Sample:
Dilute 0.2 – 0.5 mmol of the substance to be
determined in 30 mL solvent and add 20 mL
dist. water. Titrate immediately.
– Sample size in g
– Molar mass of the substance to be determined
– Normality of the titrant (0.1*titer)
– Factor for %
794 Basic Titrino
6.3 User methods
6.3.7 "Br-Index"
Determination of the bromine index in petroleum hydrocarbons according to ASTM D
2710-72.
'pa
794 Titrino
01102
794.0010
date 2002-01-03
time 09:44
0
MET Ipol
Br-Index
parameters
>titration parameters
V step
0.05 ml
titr.rate
max. ml/min
signal drift
OFF mV/min
equilibr.time
20 s
start V:
OFF
pause
0 s
I(pol)
1 µA
electrode test:
OFF
temperature
25.0 °C
>stop conditions
stop V:
abs.
stop V
10 ml
stop U
5 mV
stop EP
9
filling rate
max. ml/min
>statistics
status:
OFF
>evaluation
EPC
30 mV
EP recognition:
greatest
fix EP1 at U
OFF mV
>preselections
req.ident:
OFF
req.smpl size:
value
activate pulse:
OFF
-----------'fm
794 Titrino
01102
794.0010
date 2002-01-03
time 09:44
0
MET Ipol
Br-Index
>calculations
Br-Index=(EP1-C01)*C02*C03/C00;1;mg
C00=
1.0
C01=
0
C02=
0.05
C03=
7990
------------
794 Basic Titrino
The bromine index is defined as the quantity
of mg bromine which reacts with 100g sample.
Electrode:
6.0308.100 double Pt-electrode, at measuring
input "Pol".
Titrant:
Solution of bromide/bromate,
c(BrO3–/Br–) = 0.05 mol/L
Dilute 5.1 g KBr and 1.4 g KBrO3 separately
and make up to 1 L.
Solvent:
714 mL glacial acetic acid,
134 mL 1,1,1-trochloroethane,
134 mL Methanol,
18 mL w(H2SO4) = 0.2 (20%)
Sample:
app. 3 g sample in 20 – 100 mL solvent. Titrate blank sample the same way.
Remarks:
The bromine index can be determined easily
by endpoint titration (SET).
Reference:
Metrohm Application Bulletin Nr. 177
– Result in mg bromine/100 g sample
– Sample size in g
– Consumption of blank sample in mL
– Normality of the titrant (0.05*titer)
– Calculation factor (includes molar mass of the
bromine)
171
6.3. User methods
6.3.8 "Sapon.No"
Determination of the saponification number of
edible oils and fats.
'pa
794 Titrino
01102
794.0010
date 2002-01-03
time 09:50
0
DET U
Sapon.No
parameters
>titration parameters
meas.pt.density
4
min.incr.
10.0 µl
titr.rate
max. ml/min
signal drift
50 mV/min
equilibr.time
26 s
start V:
OFF
pause
0 s
meas.input:
1
temperature
25.0 °C
>stop conditions
stop V:
abs.
stop V
99.99 ml
stop U
OFF mV
stop EP
1
filling rate
max. ml/min
>statistics
status:
OFF
>evaluation
EPC
5
EP recognition:
all
fix EP1 at U
OFF mV
pK/HNP:
OFF
>preselections
req.ident:
OFF
req.smpl size:
value
activate pulse:
OFF
-----------'fm
794 Titrino
01102
794.0010
date 2002-01-03
time 09:50
0
DET U
Sapon.No
>calculations
Sapon.No=(C30-EP1)*C01/C00;2;mg/g
C00=
1.0
C01=
28.05
C30=
0.0
------------
172
Electrode:
6.0229.100 Solvotrode, at measuring input 1.
6.2320.000 Elektrolyte c(TEA-Br) = 0.4 mol/L
in ethylene glycol.
Titrant:
c(HCl) = 0.5 mol/L
Sample:
Weigh in app. 2 g of sample. Add 25 mL
c(KOH) = 0.5 mol/L in ethanol and allow to
boil lightly for at least 30 miutes. Rinse the
content into a beaker and titrate the excess
KOH with HCl.
Determine a blank sample the same way.
Remarks:
Change the result unit e.g. to mg KOH.
Reference:
Metrohm Application Bulletin Nr. 141
– Saponification number in mg KOH per g sample
– Sample size in g
– Molar mass of KOH * normality of titrant
(56.10*0.5)
– Consumption of "blank sample" in mL
794 Basic Titrino
6.3 User methods
6.3.9 "Ca-Mg"
Determination of the hardness of drinking water
'pa
794 Titrino
01102
794.0010
date 2002-01-03
time 09:52
0
DET U
Ca-Mg
parameters
>titration parameters
meas.pt.density
1
min.incr.
10.0 µl
titr.rate
max. ml/min
signal drift
20 mV/min
equilibr.time
38 s
start V:
OFF
pause
0 s
meas.input:
1
temperature
25.0 °C
>stop conditions
stop V:
abs.
stop V
5 ml
stop U
OFF mV
stop EP
9
filling rate
max. ml/min
>statistics
status:
OFF
>evaluation
EPC
5
EP recognition:
all
fix EP1 at U
OFF mV
pK/HNP:
OFF
>preselections
req.ident:
OFF
req.smpl size:
all
activate pulse:
OFF
-----------'fm
794 Titrino
01102
794.0010
date 2002-01-03
time 09:52
0
DET U
Ca-Mg
>calculations
Ca++=EP1*C01*C02/C00;2;mmol/l
Mg++=(EP2-EP1)*C01*C02/C00;2;mmol/l
Total=EP2*C01*C02/C00;2;mmol/l
C00=
1.0
C01=
0.05
C02=
1000
------------
794 Basic Titrino
Electrode:
6.0504.100 Ca electrode and 6.0726.100
Ag/AgCl reference electrode (outer electrolyte
KNO3 sat.), at measuring input 1.
Titrant:
c(Na2EDTA) = 0.1 mol/L in c(KOH) = 0.1
mol/L
Aux. reagent:
c(acetyl acetone) = 0.1 mol/L + c(TRIS) =
0.2 mol/L (TRIS = trishydroxymethyl aminomethane)
Sample:
100 mL drinking water,
add 15 mL auxiliary reagent.
Remarks:
The volume of the auxiliary reagent can be
optimized: As a rule of thumb, the ratio
Mg/acetyl acetone should be app. 0.05.
Reference:
Metrohm Application Bulletin Nr. 125
– Calcium hardness in mmol/L
– Magnesium hardness in mmol/L
– Total hardness in mmol/L
– Sample size in mL
– Concentration of the titrant
– Factor for mmol
173
6.3. User methods
6.3.10 "EDTA-NTA"
EDTA und NTA in detergents.
'pa
794 Titrino
01102
794.0010
date 2002-01-03
time 09:53
0
DET U
EDTA-NTA
parameters
>titration parameters
meas.pt.density
4
min.incr.
10.0 µl
titr.rate
max. ml/min
signal drift
50 mV/min
equilibr.time
26 s
start V:
OFF
pause
0 s
meas.input:
1
temperature
25.0 °C
>stop conditions
stop V:
abs.
stop V
4 ml
stop U
OFF mV
stop EP
9
filling rate
max. ml/min
>statistics
status:
OFF
>evaluation
EPC
5
EP recognition:
all
fix EP1 at U
OFF mV
pK/HNP:
OFF
>preselections
req.ident:
OFF
req.smpl size:
all
activate pulse:
OFF
-----------'fm
794 Titrino
01102
794.0010
date 2002-01-03
time 09:53
0
DET U
EDTA-NTA
>calculations
EDTA=(EP1-C01)*C02*C03/C00;2;%
NTA=(EP1-C01)*C02*C04/C00;2;%
C00=
1.0
C01=
2
C02=
100
C03=
2.9225
C04=
1.9114
------------
174
Electrode:
6.0502.140 Cu electrode and 6.0726.100
Ag/AgCl reference electrode (outer elcetrolyte
KNO3 sat.), at measuring input 1.
Titrant:
c(CuNO3) = 0.01 mol/L
Sample:
Weigh 0.5 – 1 g sample into a 100 mL measuring flask and add app. 50 mL dist. water.
Heat to app. 40 °C. Allow to cool and fill up to
mark. Pipette 10 mL into a beaker, add 2 mL
EDTA or NTA standard solution (c = 0.01
mol/L) and 10 mL buffer solution
(c(NH3/NH4NO3) = 1 mol/L; pH = 9.6) and titrate.
Remarks:
Select the appropriate formula. The other may
be deleted.
Reference:
Metrohm Application Bulletin Nr. 143
– EDTA content in %
– NTA content in %
– Sample size in g
– Volume of standard solution added
– Factor for %
– Molar mass of EDTA*concentration of titrant
– Molar mass of NTA*concentration of titrant
794 Basic Titrino
6.3 User methods
6.3.11 "Metals"
The following metals can be detected according to this method:
Barium
Cadmium
Cobalt
Lead
Nickel
Water, total hardness
Zinc
Ba
Cd
Co
Pb
Ni
(Ca+Mg)
Zn
'pa
794 Titrino
01102
794.0010
date 2002-01-03
time 09:54
0
DET U
Metals
parameters
>titration parameters
meas.pt.density
2
min.incr.
10.0 µl
titr.rate
max. ml/min
signal drift
20 mV/min
equilibr.time
38 s
start V:
OFF
pause
0 s
meas.input:
1
temperature
25.0 °C
>stop conditions
stop V:
abs.
stop V
10 ml
stop U
OFF mV
stop EP
9
filling rate
max. ml/min
>statistics
status:
OFF
>evaluation
EPC
5
EP recognition:
all
fix EP1 at U
OFF mV
pK/HNP:
OFF
>preselections
req.ident:
OFF
req.smpl size:
all
activate pulse:
OFF
-----------'fm
794 Titrino
01102
794.0010
date 2002-01-03
time 09:55
0
DET U
Metals
>calculations
Content=EP1*C01*C02/C00;2;g/l
C00=
1.0
C01=
0.1
C02=
1
------------
794 Basic Titrino
buffer solution
pH = 10
pH = 10
pH = 10
pH = 4.7
pH = 10
pH = 10
pH = 10
molar mass
137.36
112.41
58.94
207.21
58.71
64.40
65.38
Electrode:
6.0502.140 Cu electrode and 6.0726.100
Ag/AgCl reference electrode (outer electrolyte
KNO3 sat.), at measuring input 1.
Titrant:
EDTA, c = 0.1 mol/L
Buffer pH = 10:
54 g NH4Cl and 350 mL w(NH3) = 0.25 are
dissolved in 1 L dist. water.
Buffer pH = 4.7:
123 g Naac and 86 mL glacial acetic acid are
dissolved in 1 L dist. water.
Sample:
Add 5 mL of buffer solution and 1 mL
c(CuEDTA) = 0.05 mol/L to sample. Wait for
20 – 30 s and titrate.
Remarks:
Refer to the table above for the molar mass of
a metal and the appropriate buffer.
Reference:
Metrohm Application Bulletin Nr. 101
– Content of metal in g/L
– Sample size in mL
– Concentration of titrant
– Molar mass of metal
175
6.3. User methods
6.3.12 "Perox.No"
'pa
794 Titrino
01102
794.0010
date 2002-01-03
time 09:56
0
DET U
Perox.No
parameters
>titration parameters
meas.pt.density
4
min.incr.
10.0 µl
titr.rate
max. ml/min
signal drift
50 mV/min
equilibr.time
26 s
start V:
OFF
pause
0 s
meas.input:
1
temperature
25.0 °C
>stop conditions
stop V:
abs.
stop V
99.99 ml
stop U
OFF mV
stop EP
1
filling rate
max. ml/min
>statistics
status:
OFF
>evaluation
EPC
5
EP recognition:
all
fix EP1 at U
OFF mV
pK/HNP:
OFF
>preselections
req.ident:
OFF
req.smpl size:
value
activate pulse:
OFF
-----------'fm
794 Titrino
01102
794.0010
date 2002-01-03
time 09:56
0
DET U
Perox.No
>calculations
Perox.No=C01*(EP1-C30)/C00;2;mE/kg
C00=
1.0
C01=
10
C30=
0.0
------------
176
Determinationof the peroxid number of edible
oil sand fats.
Electrode:
6.0431.100 Pt-Titrode, at measuring input 1.
Titrant:
c(Na2S2O3) = 0.01 mol/L, to be prepared daily
from 0.1 mol/L.
Sample:
Weigh app. 5 g sample into an Erlenmeyer
flask and dissolve in 10 mL glacial acetic
acid/1-decanol 3:2. Add 0.2 mL saturated KI
solution, shake for 5 s and store in the dark
for 1 min. Rinse solution into the titration vessel with dist. water and titrate immediately.
Same treatment for blank sample.
Remarks:
The sample must be stirred very well during
the titration, in order to obtain a good emulsion.
Reference:
Metrohm Application Bulletin Nr. 141
– Result in milli-equivalent O2/kg
– Sample size in g
– Calculation factor
– Consumption of the blank sample in mL
794 Basic Titrino
6.3 User methods
6.3.13 "FormolNo""
Determination of the formaldehyde number in fruit juices.
TIP method with the submethods "Form.Pre" and "Form.Det"
Electrode:
6.0232.100 combined pH glass electrode, at measuring input 1.
Additonal instrument: 765 Dosimat, connect to 794 Basic Titrino via Remote line.
Titrant:
c(NaOH) = 0.1 mol/L.
Aux. reagent:
w(formaldehyde) = 0.35 adjusted to pH 8.5 with NaOH.
Sample:
Pipette exactly 25 mL sample into the titration vessel.
Fill the dosimat with the formaldehyde solution and adjust the dosing volume to 15 mL.
Sequence:
FormolNo is started and the submethod Form.Pre titrates the sample to
pH=8.5. An activating pulse starts the Dosimat dispensing the formaldehyde solution. After the reaction time of 60 s Form.Det titrates again to
pH = 8.5. The calculation is performed in FormolNo.
Reference:
Metrohm Application Bulletin Nr. 180
'pa
794 Titrino
01102
794.0010
date 2002-01-03
time 09:57
0
SET pH
Form.Pre
parameters
>SET1
EP at pH
8.50
dynamics
1.5
max.rate
10.0 ml/min
min.rate
25.0 µl/min
stop crit:
drift
stop drift
20 µl/min
>SET2
EP at pH
OFF
>titration parameters
titr.direction:
+
start V:
OFF
pause
0 s
meas.input:
1
temperature
25.0 °C
>stop conditions
stop V:
abs.
stop V
99.99 ml
filling rate
max. ml/min
>statistics
status:
OFF
>preselections
conditioning:
OFF
req.ident:
OFF
req.smpl size:
OFF
activate pulse:
OFF
------------
794 Basic Titrino
Form.Pre Preparation of the sample.
177
6.3. User methods
'pa
794 Titrino
01102
794.0010
date 2002-01-03
time 09:58
0
SET pH
Form.Det
parameters
>SET1
EP at pH
8.50
dynamics
1.5
max.rate
10.0 ml/min
min.rate
25.0 µl/min
stop crit:
drift
stop drift
20 µl/min
>SET2
EP at pH
OFF
>titration parameters
titr.direction:
+
start V:
OFF
pause
0 s
meas.input:
1
temperature
25.0 °C
>stop conditions
stop V:
abs.
stop V
99.99 ml
filling rate
max. ml/min
>statistics
status:
OFF
>preselections
conditioning:
OFF
req.ident:
OFF
req.smpl size:
OFF
activate pulse:
OFF
-----------'de
794 Titrino
01102
794.0010
date 2002-01-03
time 09:59
SET pH
Form.Det
def
>formula
>silo calculations
match id:
OFF
>common variables
>report
>mean
MN1=RS1
>temporary variables
C70=EP1
------------
178
Form.Det Determination of the sample.
-
Transfer of the end point as temporary variable
to FormolNo.
794 Basic Titrino
6.3 User methods
'pa
794 Titrino
01102
794.0010
date 2002-01-03
time 10:00
0
TIP
FormolNo
parameters
>sequence
1.method:
Form.Pre
2.L6 output:
pulse
3.pause
60 s
4.method:
Form.Det
>statistics
status:
ON
mean
n=
3
res.tab:
original
>preselections
req.ident:
OFF
req.smpl size:
OFF
meas.mode:
OFF
temperature
25.0 °C
-----------'fm
794 Titrino
01102
794.0010
date 2002-01-03
time 10:00
0
TIP
FormolNo
>calculations
FormolNo=C70*C01;1;
C01=
4
C70=
5.522
------------
794 Basic Titrino
FormolNo TIP sequence
-
Start Form.Pre
Activation of Dosimat
Reaction time
Start Form.Det
-
Formaldehyde number in mL c(NaOH) = 0.1
mol/L per 100 mL sample
Calculation factor for 100 mL sample
EP1 from Form.Det
-
179
6.3. User methods
6.3.14 "P2O5Fert""
Determination of P2O5 in fertilizer.
TIP method with submethods "P2O5-1" and "P2O5-2"
Electrode:
6.0232.100 combined pH glass electrode, at measuring input 1.
additional instrument: 765 Dosimat, connect to 794 Basic Titrino via Remote line.
Titrant:
c(NaOH) = 1.0 mol/L.
Reagents:
c(HCl) = 1.0 mol/L
Sodium oxalate sat.
Sample:
Pipette exactly 10 mL liquid fertilizer into the titration vessel. Add 5 mL
c(HCl) = 1.0 mol/L and dilute with 40 mL dist. water.
Fill the Dosimat with sodium oxalate solution and adjust the dosing volume to 15 mL.
Sequence:
P2O5Fert is startet and the submethod P2O5-1 titrates the sample to the
dihydrogenphosphate and determines the excess of dispensed titrant. An
activating pulse starts the Dosimat dispensing the sodium oxalate solution. After the waiting time of 30 s P2O5-2 titrates the dihydrogenphosphate. P2O5Fert calculates the content of P2O5.
Reference:
Metrohm Application Bulletin Nr. 240.
'pa
794 Titrino
01102
794.0010
date 2002-01-03
time 10:01
0
DET pH
P2O5-1
parameters
>titration parameters
meas.pt.density
4
min.incr.
10.0 µl
titr.rate
max. ml/min
signal drift
50 mV/min
equilibr.time
26 s
start V:
OFF
pause
0 s
meas.input:
1
temperature
25.0 °C
>stop conditions
stop V:
abs.
stop V
99.99 ml
stop pH
OFF
stop EP
1
filling rate
max. ml/min
>statistics
status:
OFF
>evaluation
EPC
5
EP recognition:
all
fix EP1 at pH
OFF
pK/HNP:
OFF
>preselections
req.ident:
OFF
req.smpl size:
OFF
activate pulse:
OFF
------------
180
P2O5-1 Titration of the first equivalence point of
H3PO4.
794 Basic Titrino
6.3 User methods
'de
794 Titrino
01102
794.0010
date 2002-01-03
time 10:03
DET pH
P2O5-1
def
>formula
excess=C41-EP1
RS1 text
excess
RS1 decimal places
3
RS1 unit:
ml
>silo calculations
match id:
OFF
>common variables
>report
>mean
MN1=RS1
>temporary variables
C70=RS1
-----------'pa
794 Titrino
01102
794.0010
date 2002-01-03
time 10:04
0
DET pH
P2O5-2
parameters
>titration parameters
meas.pt.density
4
min.incr.
10.0 µl
titr.rate
max. ml/min
signal drift
50 mV/min
equilibr.time
26 s
start V:
OFF
pause
0 s
meas.input:
1
temperature
25.0 °C
>stop conditions
stop V:
abs.
stop V
99.99 ml
stop pH
OFF
stop EP
1
filling rate
max. ml/min
>statistics
status:
OFF
>evaluation
EPC
5
EP recognition:
window
low lim.1 pH
7
up lim.1 pH
9
low lim.2 pH
OFF
fix EP1 at pH
OFF
pK/HNP:
OFF
>preselections
req.ident:
OFF
req.smpl size:
OFF
activate pulse:
OFF
-----------'de
794 Titrino
01102
794.0010
date 2002-01-03
time 10:04
DET pH
P2O5-2
def
>formula
>silo calculations
match id:
OFF
>common variables
>report
>mean
MN1=RS1
>temporary variables
C71=EP1
-----------794 Basic Titrino
-
Excess of dispensed titrant is determined..
-
Transfer of the determined excess of titrant to
P2O5Fert.
P2O5-2 Titration of dihydrogenphosphate.
-
Transfer of the determined end point as temporary variable to P2O5Fert.
181
6.3. User methods
'pa
794 Titrino
01102
794.0010
date 2002-01-03
time 10:06
0
TIP
P2O5Fert
parameters
>sequence
1.method:
P2O5-1
2.L6 output:
pulse
3.pause
30 s
4.method:
P2O5-2
>statistics
status:
ON
mean
n=
3
res.tab:
original
>preselections
req.ident:
OFF
req.smpl size:
OFF
meas.mode:
OFF
temperature
25.0 °C
-----------'fm
794 Titrino
01102
794.0010
date 2002-01-03
time 10:06
0
TIP
P2O5Fert
>calculations
P2O5=(C70+C71)*C01*C02/C00;2;%
C00=
1.0
C01=
1
C02=
7.1
C70=
1.031
C71=
10.614
------------
182
P2O5Fert TIP sequence
-
Start P2O5-1
Activaton of Dosimaten
Waiting time
Start P2O5-2
-
Content of P2O5 in %
Sample size
Concentration of titrant
Equivalence weight of P2O5 in g/mol
Excess of titrant in 1st titration in mL
Volume of titrant in 2nd titration in mL
794 Basic Titrino
6.4 Validation / GLP
6.4 Validation / GLP
GLP (Good Laboratory Practice) requires the periodic validation of the analytical instruments. The reproducibility and accuracy of the instruments are checked according to
standard operating procedures.
Guidelines for the testing regulations (SOP, Standard Operating Procedure) are given in
the following Metrohm Application Bulletin:
No. 252: Validation of Metrohm Titrators (potentiometric) according to GLP/ISO 9001.
Contact your Metrohm agency for support with the validation of your Titrino. There you get
a validation documentation, which helps you to perform the installation qualification (IQ)
and the operational qualification (OQ).
794 Basic Titrino
183
6.5. Warranty and conformity
6.5 Warranty and conformity
6.5.1 Warranty
The warranty regarding our products is limited to rectification free of
charge in our workshops of defects that can be proved to be due to
material, design or manufacturing faults which appear within 12
months from the day of delivery. Transport costs are chargeable to
the purchaser.
For day and night operation, the warranty is valid for 6 months.
Glass breakage in the case of electrodes or other glass parts is not
covered by the warranty. Checks which are not a result of material or
manufacturing faults are also charged during the warranty period.
For parts of outside manufacture insofar as these constitute an appreciable part of our instrument, the warranty stipulations of the
manufacturer in question apply.
With regard to the guarantee of accuracy, the technical specifications in the Instructions for Use are authoritative.
Concerning defects in material, construction or design as well as the
absence of guaranteed features, the purchaser has no rights or
claims except those mentioned above.
If damage of the packaging is evident on receipt of a consignment
or if the goods show signs of transport damage after unpacking, the
carrier must be informed immediately and a written damage report
demanded. Lack of an official damage report releases METROHM
from any liability to pay compensation.
If any instruments and parts have to be returned, the original packaging should be used if at all possible. This applies above all to instruments, electrodes, buret cylinders and PTFE pistons. Before
embedment in wood shavings or similar material, the parts must be
packed in a dustproof package (for instruments, use of a plastic bag
is imperative). If open assemblies are enclosed in the scope of delivery that are sensitive to electromagnetic voltages (e.g. data interfaces etc.) these must be returned in the associated original protective packaging (e.g. conductive protective bag). (Exception: assemblies with built-in voltage source belong in a non-conductive protective packaging). For damage which arises as a result of noncompliance with these instructions, no warranty responsibility whatsoever will be accepted by METROHM.
184
794 Basic Titrino
6.5 Warranty and conformity
6.5.2
EU Declaration of conformity
EU Declaration of Conformity
The METROHM AG company, Herisau, Switzerland hereby certifies, that the
instrument:
794 Basic Titrino
meets the requirements of EC Directives 89/336/EEC and 73/23/EEC.
Source of the specifications:
EN 50081
EN 50082
EN 61010
Electromagnetic compatibility, basic specification;
Emitted Interference
Electromagnetic compatibility, basic specification;
Interference Immunity
Safety requirements for electrical laboratory measurement
and control equipment
Description of apparatus:
All-purpose titrator, titration sequences can be programmed and methods
stored in the internal memory.
Herisau, October 30, 2001
794 Basic Titrino
Dr. J. Frank
Ch. Buchmann
Leiter Entwicklung
Leiter Produktion und
Beauftragter Qualitätssicherung
185
6.5. Warranty and conformity
6.5.3
Certificate of Conformity and System Validation
Certificate of Conformity and System Validation
This is to certify the conformity to the standard specifications for electrical appliances and accessories, as well as to the standard specifications for security
and to system validation issued by the manufacturing company.
Name of commodity:
794 Basic Titrino
System software:
Stored in ROMs
Name of manufacturer:
Metrohm Ltd., Herisau, Switzerland
This Metrohm instrument has been built and has undergone final type testing
according to the standards:
Electromagnetic compatibility: Emission
EN50081-1, EN50081-2, EN55022 (class B)
Electromagnetic compatibility: Immunity
EN50082-1, IEC61000-6-2, Namur, IEC61000-4-2, IEC61000-4-3,
IEC61000-4-5, IEC61000-4-6, IEC61000-4-11
Safety specifications
IEC61010-1, EN61010-1
It has also been certified by the Swiss Electrotechnical Association (SEV),
which is member of the International Certification Body (CB/IEC).
The technical specifications are documented in the instruction manual.
The system software, stored in Read Only Memories (ROMs) has been validated in connection with standard operating procedures in respect to functionality and performance. The features of the system software are documented in the instruction manual.
Metrohm Ltd. is holder of the SQS-certificate of the quality system ISO 9001 for
quality assurance in design/development, production, installation and servicing.
Herisau, October 30, 2001
186
Dr. J. Frank
Ch. Buchmann
Development Manager
Production and
Quality Assurance Manager
794 Basic Titrino
6.6 Scope of delivery and ordering designations
6.6 Scope of delivery and ordering designations
794 Basic Titrino ......................................................................................2.794.0010
inclusive the following accessories:
1 Titrino ................................................................................................................. 1.794.0010
1 Keypad for 794 Basic Titrino ............................................................................. 6.2132.080
1 Key for Exchange Units ..................................................................................... 6.2739.010
1 Mains cable with cable socket, type CEE(22), V
Cable plug to customer's specifications
type SEV 12 (Switzerland...)............................................................................. 6.2122.020
type CEE(7), VII (Germany...)........................................................................... 6.2122.040
type NEMA/ASA (USA...) ................................................................................. 6.2122.070
1 Vesuv 3.0 light, PC program for data acquisition and method backup
for 2 devices .................................................................................................. 6.6008.500
1 Instructions for Use for 794 Basic Titrino........................................................... 8.794.1003
1 Quick Reference for 794 Basic Titrino ............................................................... 8.794.1013
Options
Accessories to separate order and on payment of extra charge:
Burets
Auxiliary burets
765 Dosimat ......................................................................................................... 2.765.0010
776 Dosimat ......................................................................................................... 2.776.0010
Cable Titrino (activate pulse, line L6) — 765 or 776 Dosimat .............................. 6.2139.000
Exchange Units
V = 1 mL, .......................................................................................................... 6.3026.110
V = 5 mL, .......................................................................................................... 6.3026.150
V = 10 mL, .......................................................................................................... 6.3026.210
V = 20 mL, .......................................................................................................... 6.3026.220
V = 50 mL, .......................................................................................................... 6.3026.250
Stirrers and Titrating Stands
728 Magnetic stirrer.............................................................................................. 2.728.0040
727 Ti Stand for rinsing and addition of fresh solvent .......................................... 2.727.0010
802 Rod Stirrer...................................................................................................... 2.802.0010
727 Ti Stand with built-in magnetic stirrer ............................................................ 2.727.0100
794 Basic Titrino
187
6.6. Scope of delivery and ordering designations
Titration equipment
Titration vessel, volumes
1... 50 mL ...................................................................................................6.1415.110
5... 70 mL ...................................................................................................6.1415.150
10... 90 mL ...................................................................................................6.1415.210
20... 90 mL ...................................................................................................6.1415.220
50... 150 mL ...................................................................................................6.1415.250
70... 200 mL ...................................................................................................6.1415.310
Titration vessel with thermostatic jacket, volumes
1... 50 mL ...................................................................................................6.1418.110
5... 70 mL ...................................................................................................6.1418.150
10... 90 mL, order 6.2036.000 holding ring separately ................................6.9914.023
20... 90 mL ...................................................................................................6.1418.220
50... 150 mL ...................................................................................................6.1418.250
Titration vessel lid (5 openings) ..........................................................................6.1414.010
Magnetic stirring bars, length
12 mm............................................................................................................6.1903.010
16 mm............................................................................................................6.1903.020
25 mm............................................................................................................6.1903.030
Electrode holder ..................................................................................................6.2021.020
Electrodes and accessories
comb. pH Glass electrode with SGJ, without cable ...........................................6.0233.100
comb. pH glass electrode, without cable ...........................................................6.0232.100
comb. pH micro glass electrode, without cable .................................................6.0234.100
comb. pH glass electrode with built-in T sensor, with SGJ ................................6.0238.000
T adapter for the connection of one electrode to 2 Titrinos ................................6.2103.100
T sensor (Pt1000) with SGJ, without cable .........................................................6.1110.100
Electrode cable, 1m ............................................................................................6.2104.020
Cable for T sensor...............................................................................................6.2104.080
SGJ sleeve for electrodes without SGJ...............................................................6.1236.040
Printers
Custom-Drucker DP40-S4N ................................................................................. 2.140.0200
Cable Titrino – Custom DP40-S4N (25/9 pins) .................................................... 6.2125.130
Cable Titrino – Seiko DPU-414............................................................................. 6.2125.130
Cable Titrino – EPSON LX300+ (25/25 pins)....................................................... 6.2125.050
Cable Titrino – HP Desk Jet (serial interface) (25/25 pins) .................................. 6.2125.050
Cable Titrino – HP Desk/Laser Jet (parallel IF) .................................................... 2.145.0330
Adapter for connection of printer/balance at the same COM.............................. 6.2125.030
188
794 Basic Titrino
6.6 Scope of delivery and ordering designations
Balances
Cable Sartorius – balances MP8, MC1 (9/25 pins) .............................................. 6.2125.070
Cable Shimadzu – balances BX, BW ................................................................... 6.2125.080
Ohaus Voyager, Explorer, Analytical Plus ................................................. cable from Ohaus
Mettler AB, AG balances (interface LC-RS25)..........................................cable with balance
Mettler AT balance ............................................................................................ 6.2146.020
Mettler AM, PM balance ............................................ 6.2146.020+accessories from Mettler
Mettler balances with interface 016 ...........................................................cable from Mettler
Mettler balances with interface 011 or 012........................................................... 6.2125.020
Mettler PG, AB-S, AX, MX, UMX balances ...................................... 6.2134.120+6.2125.170
AND balances (with RS232 interface OP-03) ....................................................... 6.2125.020
Precisa balances .................................................................................................. 6.2125.080
Adapter for connection of printer/balance at the same COM .............................. 6.2125.030
PC connection
Cable Titrino – PC (25/25 pins)............................................................................. 6.2125.060
Cable Titrino – PC (25/9 pins).......................................................... 6.2125.060+6.2125.010
RS232 C extension cable (25/25 pins) ................................................................. 6.2125.020
Vesuv 3.0, PC program for data acquisition and method backup
for up to 64 devices....................................................................................... 6.6008.200
Sample Changer
730 Sample Changer, 1 working station, 1 pump and 1 valve ............................ 2.730.0010
730 Sample Changer, 1 working station, 2 pumps and 2 valves......................... 2.730.0020
730 Sample Changer, 2 working stations, 2 pumps and 2 valves ....................... 2.730.0110
730 Sample Changer, 2 working stations, 4 pumps and 4 valves ....................... 2.730.0120
760 Sample Changer, 1 working station .............................................................. 2.760.0010
Cable Titrino — 730, 760 Sample Changer.......................................................... 6.2141.020
Cable 2x Titrino — 730, 760 Sample Changer ..................................................... 6.2141.030
Cable Titrino — 730, 760 Sample Changer+665, 725, 765, 776 Dosimat ......... 6.2141.040
Cable Titrino — 730, 760 Sample Changer+ 2x 665, 725, 765, 776 Dosimat .... 6.2141.050
Cable Titrino — Control Unit 664 for Sample Changer 673/674 .......................... 3.980.3560
794 Basic Titrino
189
Index
Index
Keys are marked with < >, display texts are in bold characters and pages concerning the green
part are printed in Italic.
A
Accessories........................................... 187ff
activate pulse: ..................... 30, 40, 46, 47
Analogue output
connection of a recorder..................... 153
resolution............................................. 153
test....................................................... 140
auto start ................................................ 23
auxiliaries ............................................... 23
B
Balance
connection .......................................... 151
selection ................................................ 22
balance: .................................................... 22
baud rate: ................................................ 23
Blank........................................................ 167
Br-Index ................................................... 171
buffer 1 pH ............................................... 47
C
Cable ..................................................... 188ff
CAL............................................................ 47
cal.date .................................................... 68
cal.temp. .................................................. 47
Calculation ................................................ 52
formula .................................................. 52
variables CXX........................................ 53
Calibration
sequence .............................................. 49
calibration parameters ........................... 47
Ca-Mg ..................................................... 173
CE............................................................ 185
Certificates ............................................ 185ff
check electrode ..................................... 133
check exchange unit .............................. 133
check T-sensor ....................................... 133
Chloride ................................................... 168
Common variable...................................... 57
common variables................................ 24, 57
Computer
connection .......................................... 154
conditioning: ........................................... 40
Configuration............................................. 22
Conformity............................................... 184
Connection
balance ............................................... 151
cable.................................................. 188ff
computer............................................. 154
electrodes ........................................... 155
190
printer.................................................. 150
recorder .............................................. 153
sample changer.................................. 152
stirrer ................................................... 149
Ti stand ............................................... 149
Contrast of display...................................... 3
Control
lines................................................... 161ff
parameters ......................................... 42ff
via RS232.............................................77ff
Curve
printing .................................................. 60
cycle lines: ............................................ 72
D
Data
input .................................................... 7, 8
output.................................................... 60
data bit: .................................................. 23
data set reevaluation .......................... 133
Data transmission (RS232)......................77ff
date ........................................................... 23
Decimal places ......................................... 52
Delete
common variables ................................ 57
formula.................................................. 52
method.................................................. 66
silo lines ................................................ 71
statistics values .................................... 55
text .......................................................... 8
delete all silo lines ............................ 72
delete all: .............................................. 72
delete method ........................................... 66
delete n= .................... 29, 39, 46, 48, 50, 55
delete silo lines ................................... 71
DET ......................................................... 26ff
dev.label. ................................................ 23
dialog language........................................ 22
dialog:...................................................... 23
Diazo ....................................................... 170
Differential potentiometry........................ 155
Display
contrast ................................................... 3
lock ..................................................... 121
display drift: ......................................... 40
division by zero ................................... 133
dos.rate .............................................. 26, 37
Dosing......................................................... 3
Drift...................................................... 31, 45
dynamics .................................................... 36
794 Basic Titrino
Index
E
Earthing .......................................................5
edit silo lines ........................................71
EDTA-NTA ...............................................174
electr.id.............................................47, 68
electrode test: ......................26, 37, 45, 50
Electrodes
connection...........................................155
End volume................................................53
EP
criterion..................................................32
evaluation ............................................32ff
titration.................................................36ff
window ..................................................34
EP at pH ....................................................36
EP overflow .............................................133
EP recognition: ........................................29
EPC .................................................29, 32, 33
equilibr.time ...............................26, 45, 47
Equilibration time.......................................31
Error messages ...............................82, 133ff
evaluation .................................................29
Evaluation ................................................32ff
Examples .......................................11ff, 165ff
Exchange unit......................................3, 187
EXX ...........................................................135
F
Fabrication number .....................................5
factor ......................................26, 28, 37, 39
filling rate .......................................28, 39
Fix end point ..............................................35
fix EP1 at pH ...........................................29
Form.Det..................................................177
Form.Pre..................................................177
FormolNo.................................................177
formula ......................................................52
G
GLP..........................................................183
Graphics
printing...................................................60
H
Handshake ............................................ 125ff
hardware .............................................127
software ...............................................125
handshake: .................................................23
Hardware-Handshake .............................127
HNP ...........................................................35
I
I(pol) ......................................26, 37, 45, 50
I/O-lines ..................................................161f
id#1 or C21 .........................................69, 71
Identification
inquiry ....................................................30
request ..................................................40
794 Basic Titrino
sample .................................................. 69
info ........................................................... 63
Initialise RAM........................................... 147
input 1 ...................................................... 68
Inputs ...................................................... 161
Instrument number...................................... 5
ISO........................................................... 186
K
Key
<CAL.DATA>................................... 6, 68
<C-FMLA>....................................... 6, 54
<CLEAR> .............................................. 6
<CONFIG> ...................................... 6, 22
<DEF> ............................................. 6, 52
<DOS> .................................................. 3
<ENTER> .............................................. 6
<MEAS/HOLD>..................................... 6
<MODE> ......................................... 6, 24
<PARAM>........................................ 6, 26
<PRINT>.......................................... 6, 60
<QUIT>.................................................. 6
<REPORTS> ................................... 6, 59
<SELECT>............................................. 6
<SILO> ............................................ 6, 70
<SMPL DATA> ................................ 6, 69
<START> ........................................... 3, 6
<STATISTICS> ................................ 6, 56
<STOP/FILL> ........................................ 3
<STOP>................................................. 6
<USER METH> ............................... 6, 66
Keypad ........................................................ 6
lock...................................................... 120
L
Language .................................................. 22
LED
Silo .......................................................... 3
Statistics.................................................. 3
Lock
display................................................. 121
keypad ................................................ 120
low lim.1 pH ............................................. 29
LX output .................................................. 63
M
Mains........................................................... 5
Manual operation ...................................... 6ff
manual stop............................................. 133
match id: .................................................. 74
max.rate .................................................... 36
mean ............................. 29, 39, 46, 48, 50, 55
Mean
calculation............................................. 55
delete result........................................... 55
silo ......................................................... 74
MEAS......................................................... 45
meas.input:....................... 26, 37, 45, 47, 50
191
Index
................................................ 50
.......................... 133
meas.pt.density ................................. 26, 32
measuring parameters .............................. 45
Measuring point list
print ....................................................... 60
Menu ........................................................... 7
MET ......................................................... 26ff
Metals...................................................... 175
method ........................................................ 63
Method
memory ................................................. 66
name ..................................................... 66
method name: ............................................. 66
method: ...................................................... 71
min.incr. ............................................ 26, 32
min.rate .................................................... 36
missing EP .............................................. 133
missing fix EP ....................................... 133
Mode
CAL........................................................ 47
DET........................................................ 26
MEAS .................................................... 45
MET ....................................................... 26
selection ................................................ 24
SET........................................................ 36
TIP ......................................................... 62
meas.mode:
meas.pt list overflow
N
no.......................................................... 133f
no.EP not corresponding ....................... 133
Non aqueous titration.............................. 155
not valid ................................................ 134
O
Object tree............................................... 85ff
Operating course ...................................... 9ff
Ordering designations .......................... 187ff
Outputs.................................................... 161
outside .................................................... 134
overrange ................................................ 134
P
P2O5-1 .................................................... 180
P2O5-2 .................................................... 180
P2O5Fert ................................................. 180
Parameters
CAL........................................................ 47
DET........................................................ 26
MEAS .................................................... 45
MET ....................................................... 26
SET........................................................ 36
TIP ......................................................... 62
parity: ...................................................... 23
pause.............................................. 26, 37, 63
peripheral units...................................... 22
Perox.No.................................................. 176
Perturbation........................................... 133ff
192
pH(as) ....................................................... 68
Pin assignment
RS232 ................................................. 129
Socket "Remote" ................................ 161f
pK.............................................................. 35
pK/HNP:...................................................... 29
preselections ......................... 30, 40, 46, 50
Printer
connection .......................................... 150
problems............................................. 131
selection................................................ 22
Printing .................................................... 60ff
Problems
non aqueous titration.......................... 155
printer.................................................. 131
SET titratons ......................................... 44
program...................................................... 23
R
RAM initialisation..................................... 147
recall method ........................................... 66
record:...................................................... 22
Recorder connection .............................. 153
Remote control
commands
details ............................................102ff
overview............................................ 85
via "Remote" lines ............................. 161ff
via RS232.............................................77ff
Remote lines ........................................... 163
report ....................................................... 58
Report
output.................................................... 58
printing ............................................ 59, 60
reproduction ......................................... 60
selection.......................................... 58, 60
req.ident: .............................. 30, 40, 46, 50
req.smpl size: ....................... 30, 40, 46, 50
res.tab: ...................... 29, 39, 46, 48, 50, 55
Result
calculation............................................. 52
delete .................................................... 55
report .................................................... 58
store ...................................................... 73
RS? ............................................................. 52
RS1 decimal places.................................. 52
RS1 unit: .................................................. 52
RS1= ........................................................... 52
RS232 settings ......................................... 23
RS232-interface
configuration......................................... 23
pin assignment ................................... 129
properties...........................................125ff
Rules for operation via RS232 .................77ff
run number ................................................ 23
794 Basic Titrino
Index
S
same buffer .............................................134
Sample
data .......................................................69
identification ....................................30, 69
size ........................................................70
sample changer cal: ................................47
Sapon.No ................................................172
save lines OFF .......................................134
save lines: ...............................................72
Save method .............................................66
Scope of delivery.....................................187
second TIP call ......................................134
Selection
balance..................................................22
mode .....................................................24
printer ....................................................22
send to: ....................................................22
Sensor
connection...........................................155
sequence ....................................................62
Sequence
CAL........................................................49
DET........................................................31
MET .......................................................31
SET ........................................................41
TIP..........................................................64
Series number .............................................5
SET ..........................................................36ff
SET1 ............................................................36
Setup .....................................................149ff
signal drift .................................26, 45, 47
Silo
memory ...............................................70ff
report .................................................74
report .....................................................60
silo calculations ..............................73, 74
silo empty ...............................................134
silo full.................................................134
silo line...................................................71
slope ..........................................................68
smpl data...................................................69
smpl size.............................................69, 71
smpl unit: ...........................................69, 71
Software-Handshake...............................125
start delay ...............................................23
start V ................................................26, 37
Start volume.........................................26, 37
statistics ...................29, 39, 46, 48, 50, 55
Statistics
calculations ...........................................55
report .....................................................60
values
delete results.....................................55
silo .....................................................74
status: ........................29, 39, 46, 48, 50, 55
794 Basic Titrino
Stirrer connnection .................................. 149
stop bit: .................................................. 23
stop conditions ................................. 28,
39
stop crit: ................................................ 36
Stop criteria ......................................... 28, 43
stop drift ................................................ 36
stop EP ...................................................... 28
stop pH ...................................................... 28
stop time .................................................. 36
stop V ........................................................ 39
stop V: ...................................................... 28
stop… ....................................................... 134
store method ............................................. 66
Submethods in TIP.................................... 65
system error 3 ....................................... 135
T
t(delay) .................................................... 36
TAN-TBN ................................................. 169
Technical specifications.......................... 158
temp ........................................................... 68
temperature............................. 26, 37, 45, 50
Temporary variable ................................... 65
temporary variables ................................ 65
Text input..................................................... 8
time ........................................................... 23
time interval ........................................... 45
TIP ............................................................. 62
TIP terminated ....................................... 135
Titer_pH................................................... 166
titr.direction: ....................................... 37
titr.rate .................................................. 26
Titration
modes ................................................... 25
non aqueous ....................................... 155
parameters
DET ................................................... 26
MET................................................... 26
SET.................................................... 37
printing curve ........................................ 60
sequence
DET ................................................... 31
MET................................................... 31
SET.................................................... 41
TIP ..................................................... 64
vessel setup ........................................ 157
titration parameters ........................ 26, 37
Tree ......................................................... 85ff
Troubleshooting .................................... 133ff
Tutorial....................................................... 9ff
U
U(pol) ...................................... 26, 37, 45, 50
Unit
result...................................................... 52
sample size ........................................... 69
up lim.1 pH............................................... 29
193
Index
User methods.................................. 66, 165ff
W
V
Warranty.................................................. 184
wrong sample .......................................... 135
V step .................................................. 26,
33
Validation................................................. 183
Values entry................................................. 7
194
X
XXX bytes missing .................................
133
794 Basic Titrino
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertising