Sharp IQ-8000 Technical data

OPERATIONS MANUAL
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CarboVis 701 IQ TS
CarboVis 705 IQ TS
OPTICAL SENSOR FOR CARBON SUM PARAMETERS AND TOTAL SUSPENDED SOLIDS (TSS)
CarboVis 70x IQ TS
For the most recent version of the manual, please visit www.ysi.com.
Contact
Copyright
2
YSI
1725 Brannum Lane
Yellow Springs, OH 45387 USA
Tel: +1 937-767-7241
800-765-4974
Email: environmental@ysi.com
Internet: www.ysi.com
© 2012 Xylem Inc.
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CarboVis 70x IQ TS
Contents
CarboVis 70x IQ TS - Contents
1
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.1
1.2
1.3
1.4
2
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.1
2.2
3
3.4
11/2012
IQ SENSOR NET system requirements . . . . . . . . . . . . . . 3-1
Scope of delivery of the CarboVis 70x IQ TS . . . . . . . . . 3-1
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
3.3.1 Mounting the sensor . . . . . . . . . . . . . . . . . . . . . 3-2
3.3.2 Mounting the shock protectors . . . . . . . . . . . . . 3-4
3.3.3 Connecting the sensor to the IQ SENSOR NET . 3-5
Initial commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
3.4.1 General information . . . . . . . . . . . . . . . . . . . . . . 3-7
3.4.2 Sensor structure . . . . . . . . . . . . . . . . . . . . . . . . 3-8
3.4.3 Settings for the main sensor . . . . . . . . . . . . . . . 3-9
3.4.4 Settings for virtual sensors . . . . . . . . . . . . . . . 3-12
3.4.5 Settings of the secondary sensor (TSS measurement)
. . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
Measuring / Operation . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.1
4.2
4.3
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Safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.1.1 Safety information in the operating manual . . . . 2-1
2.1.2 Safety signs on the product . . . . . . . . . . . . . . . . 2-1
2.1.3 Further documents providing safety information 2-1
Safe operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2.2.1 Authorized use . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2.2.2 Requirements for safe operation . . . . . . . . . . . . 2-2
2.2.3 Unauthorized use . . . . . . . . . . . . . . . . . . . . . . . 2-2
Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3.1
3.2
3.3
4
How to use this component operating manual . . . . . . . . 1-1
Fields of application . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Measuring principle of the UV-VIS sensor . . . . . . . . . . . 1-2
Structure of the UV-VIS sensor . . . . . . . . . . . . . . . . . . . 1-3
Determination of measured values . . . . . . . . . . . . . . . . 4-1
Measuring operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
4.3.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
4.3.2 User calibration . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
4.3.3 Sensor check/Zero adjustment . . . . . . . . . . . . . 4-8
0-1
CarboVis 70x IQ TS
5
Maintenance and cleaning . . . . . . . . . . . . . . . . . . . . . . .5-1
5.1
5.2
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
Sensor cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
5.2.1 Cleaning agents and accessories . . . . . . . . . . .5-1
5.2.2 General steps to be taken . . . . . . . . . . . . . . . . .5-2
5.2.3 Basic cleaning . . . . . . . . . . . . . . . . . . . . . . . . . .5-3
5.2.4 Cleaning the measuring gap . . . . . . . . . . . . . . .5-4
6
Spare parts, maintenance equipment, accessories . . . .6-1
7
What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1
8
Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-1
8.1
8.2
8.3
8.4
9
Measurement characteristics . . . . . . . . . . . . . . . . . . . . .8-1
Application conditions . . . . . . . . . . . . . . . . . . . . . . . . . . .8-3
General data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-5
Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-6
Indexes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-1
9.1
9.2
Explanation of the messages . . . . . . . . . . . . . . . . . . . . .9-1
9.1.1 Error messages . . . . . . . . . . . . . . . . . . . . . . . . .9-2
9.1.2 Info messages . . . . . . . . . . . . . . . . . . . . . . . . . .9-4
Status info . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-5
10 Appendix: Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-1
11 Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1
11.1 Ordering & Technical Support . . . . . . . . . . . . . . . . . . .11-1
11.2 Service Information . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-1
0-2
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Overview
CarboVis 70x IQ TS
1
Overview
1.1
How to use this component operating manual
Structure of the
IQ SENSOR NET operating
IQ Sensor Net Operating Manual
manual
System
Operating
Manual
(Ring Binder)
IQ Sensor
Operating
Manual
MIQ Module
Operating
Manual
MIQ Terminal
Operating
Manual
Component Operating Manuals
Fig. 1-1
Structure of the IQ SENSOR NET operating manual
The IQ SENSOR NET operating manual has a modular structure like the
IQ SENSOR NET itself. It consists of a system operating manual and the
operating manuals of all the components used.
Please file this component operating manual into the ring binder of the
system operating manual.
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1-1
Overview
CarboVis 70x IQ TS
1.2
Fields of application
The range of application comprises control, feedback control and monitoring.
Measuring location
Ultrasound cleaning
system
Compressed air cleaning
(option)
CarboVis 701 IQ
TS
Inlet or outlet for higher parameter values (see
section 8.1 MEASUREMENT CHARACTERISTICS)
CarboVis 705 IQ
TS
Outlet for lower parameter values (see section
8.1 MEASUREMENT CHARACTERISTICS)
The ultrasound cleaning system ensures low maintenance and longterm reliable measurement operation.
The ultrasound source integrated in the sensor excites the measurement windows to produce vibrations in the ultrasound range. The
movement of the surface as a result of this prevents the growth of
pollution in almost all cases and, thus, ensures reliable measured
values during continuous operation.
The sensor is designed to be equipped with an additional compressed
air-driven cleaning system, which supports the ultrasound cleaning
system as necessary.
1.3
Measuring principle of the UV-VIS sensor
The UV-VIS sensor operates according to the measuring principle of
UV-VIS spectrometry.
Any substance contained in a measuring solution attenuates a light
beam that penetrates the measuring solution. The attenuation (absorbance) of the light beam is measured for different wavelengths. The
wavelength dependent distribution produces the absorbance spectrum.
The wavelength range where an absorbance occurs is characteristic of
the substance. The extent of the absorbance depends on the amount
of the substance.
The influence of typical interference matrix variants occurring at municipal waste water treatment plants can be eliminated by including the
entire absorbance spectrum.
With this measuring principle, measuring does not take place continuously but at intervals.
1-2
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Overview
CarboVis 70x IQ TS
1.4
Structure of the UV-VIS sensor
A UV-VIS sensor contains a light source (1), a measuring gap (3) to
enable the contact of light with the measuring solution, and a detector
(5) to measure the attenuated light beam.
The sender of the optical system (2) directs a light beam, the measuring
beam (6), through the measuring solution and a second light beam, the
reference beam (8), over a distance without measuring solution. The
test sample is between both measurement windows (3) in the
measuring gap.
The receiver of the optical system (4) directs the measuring beam and
reference beam to the detector. In the detector, the light is received by
fixed photo diodes.
1 2
3
8
Fig. 1-2
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6
4 5
7
Structure of a UV-VIS sensor
1
Light source
2
Sender of the optical system
3
Measuring gap between the measurement windows
4
Receiver of the optical system
5
Detector
6
Measuring beam
7
Reference beam
8
Connection for the optional compressed air cleaning system
1-3
Overview
1-4
CarboVis 70x IQ TS
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Safety
CarboVis 70x IQ TS
2
Safety
2.1
Safety information
2.1.1
Safety information in the operating manual
This operating manual provides important information on the safe operation of
the product. Read this operating manual thoroughly and make yourself familiar
with the product before putting it into operation or working with it. The operating
manual must be kept in the vicinity of the meter so you can always find the information you need.
Important safety instructions are highlighted in this operating manual. They are
indicated by the warning symbol (triangle) in the left column. The signal word
(e.g. "CAUTION") indicates the danger level:
WARNING
indicates a possibly dangerous situation that can lead to serious (irreversible)
injury or death if the safety instruction is not followed.
CAUTION
indicates a possibly dangerous situation that can lead to slight (reversible) injury
if the safety instruction is not followed.
Note
indicates a situation where goods might be damaged if the actions mentioned
are not taken.
2.1.2
Safety signs on the product
Note all labels, information signs and safety symbols on the product. A warning
symbol (triangle) without text refers to safety information in this operating
manual.
2.1.3
Further documents providing safety information
The following documents provide additional information, which you should
observe for your safety when working with the measuring system:
 Operating manuals of other components of the IQ SENSOR NET system
(power packs, controller, accessories)
 Safety datasheets of calibration and maintenance equipment (e.g. cleaning
solutions).
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Safety
CarboVis 70x IQ TS
2.2
Safe operation
2.2.1
Authorized use
The authorized use of the CarboVis 70x IQ TS consists of its use as a sensor in
the IQ SENSOR NET. Only the operation and running of the product according to
the instructions and technical specifications given in this operating manual is
authorized (see chapter 8 TECHNICAL DATA). Any other use is considered unauthorized.
2.2.2
Requirements for safe operation
Note the following points for safe operation:
 The product may only be operated according to the authorized use specified
above.
 The product may only be supplied with power by the energy sources mentioned in this operating manual.
 The product may only be operated under the environmental conditions mentioned in this operating manual.
 The product may not be opened.
2.2.3
Unauthorized use
The product must not be put into operation if:
 it is visibly damaged (e.g. after being transported)
 it was stored under adverse conditions for a lengthy period of time (storing
conditions, see chapter 8 TECHNICAL DATA).
2-2
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Commissioning
CarboVis 70x IQ TS
Software statuses of the
controller and terminal
components
For cleaning with
compressed air via a relay
3
Commissioning
3.1
IQ SENSOR NET system requirements
The operation of the CarboVis 70x IQ TS requires the following software versions in the IQ SENSOR NET:
 DIQ/S 182
Controller software:
Version 3.45 or higher
 MIQ/MC2
Controller software:
Version 3.37 or higher
 MIQ TC 2020 XT Controller software:
Version 3.37 or higher
 IQ Software pack Software version:
CONNECT
Version 1.00 or higher
 MIQ/CR3
Software version:
Version 2.88 or higher
 MIQ/R6
Software version:
Version 2.88 or higher
 MIQ/CHV PLUS
Software version:
Version 2.88 or higher
 DIQ/S 182 (XT)
Software version:
Version 3.44 or higher
3.2
Scope of delivery of the CarboVis 70x IQ TS
The following parts are included in the scope of delivery of the
CarboVis 70x IQ TS:
 UV-VIS sensor
 Sensor sleeve
 Shock protectors
 Operating manual
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3-1
Commissioning
CarboVis 70x IQ TS
3.3
Installation
3.3.1
Mounting the sensor
Note
The sensor is an optical precision instrument that is to be protected
against shocks. Make sure the distances to the wall, bottom and other
installation surroundings are sufficient. If necessary, protect the sensor
from hitting with the protective ring provided. Mount any fixing elements
only on the stable metal shaft.
Note
Always make sure the surface of the enclosure is not damaged by
sharp-edged objects. The enclosure of the sensor may not touch any
metallic objects in order to prevent contact corrosion.
Note
Do not suspend the sensor on the sensor connection cable. Risk of cable break and water penetration at the cable gland.
A wide range of mounting accessories is available for the installation of
the CarboVis 70x IQ TS (see chapter 6 SPARE PARTS, MAINTENANCE
EQUIPMENT, ACCESSORIES). Thus, all prevalent ways of mounting are
possible.
Generally, observe the following general rules when mounting the
sensor at the measuring location:
Horizontal installation
When mounting the sensor horizontally, the measuring gap opening
should be on the side. Thus, any air bubbles can escape upward after
cleaning and no sediment can collect in the measuring gap. The sensor
should be aligned in parallel with the flow direction.
n
ctio
w
Flo
e
dir
Measuring gap opening
Fig. 3-1
3-2
Horizontal installation
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Vertical installation
For vertical installation, mount the sensor in a position that allows interfering elements in the measuring gap to escape with the current. In the
case of vertical installation, the minimum flow rate is 0.2 m/s so the
measuring gap is kept clean optimally.
Flo
easuring gap opening
wd
ire
ctio
n
Fig. 3-2
Protection against shocks
When installing the sensor, always make sure it cannot knock against
a wall or another obstacle. Make sure the safety margins are sufficient
(e. g. with suspended mounting).
Mount the enclosed shock protectors (see section 3.3.2). Their soft rubber compound absorbs hard impacts.
Fig. 3-3
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Vertical installation
Sensor with mounted shock protectors
3-3
Commissioning
CarboVis 70x IQ TS
3.3.2
Mounting the shock protectors
The shock protectors consist of two rings, a cap and four cable ties. To
mount the shock protectors, proceed as follows:
3
1
2
Sensor with mounted
shock protectors
Fig. 3-4
3-4
Mounting the shock protectors
1.
Plug the cap (pos. 2 in Fig. 3-4) on one of the two rings (pos. 1).
2.
Put the assembled unit on the sensor end and fix it with 2 cable
ties (pos. 3) as shown in Fig. 3-4.
3.
Put the second ring on the cable end of the sensor and fix it
with the remaining two cable ties in the same way.
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3.3.3
Connection cable
Connecting the sensor to the IQ SENSOR NET
A sensor connection cable of the SACIQ or SACIQ SW type is required
to connect the sensor. The cable is available in different lengths.
Compared to the standard model SACIQ, the SACIQ SW sensor
connection cable is optimized regarding its corrosion resistance in
seawater and brackish water and adapted for use in conjunction with
the CarboVis 70x IQ TS . Information on this and other IQ SENSOR NET
accessories is given in the WTW catalog and on the Internet.
How to connect the SACIQ (SW) sensor connection cable to the terminal strip of an MIQ module is described in chapter 3 INSTALLATION of the
IQ SENSOR NET system operating manual.
Are the plug connections
dry?
Before connecting the sensor and sensor connection cable, please
make sure the plug connections are dry. If moisture gets into the plug
connections, first dry the plug connections (dab them dry or blow them
dry using compressed air).
Note
Do not suspend the sensor on the sensor connection cable but use the
suitable mounting equipment. Information on this and other
IQ SENSOR NET accessories is given in the WTW catalog and on the Internet.
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Commissioning
Connecting the sensor to
the sensor connection
cable
CarboVis 70x IQ TS
1.
Take the protective caps off the plug connections of the sensor
and the SACIQ (SW) sensor connection cable and keep them
safe.
2.
Plug the socket of the SACIQ (SW) sensor connection cable
onto the plug head connector of the sensor. At the same time,
rotate the socket so that the pin in the plug head connector (1)
clicks into one of the two holes in the socket.
3.
Then screw the coupling ring (2) of the sensor connection
cable onto the sensor up to the stop.
SACIQ (SW)
2
1
Fig. 3-5
3-6
Connecting the sensor
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3.4
Initial commissioning
3.4.1
General information
CAUTION
Never look into the measuring window or put objects into the measuring window during operation! The emitted UV radiation can damage the
eyes!
In the case of authorized use, inadvertent eye contact with the light
beam is not possible.
Measuring location
The sensor is prepared for operation in the outlet of the waste water
treatment plant and calibrated in the factory. For use in the inlet you
only have to change the Measuring location setting.
The sensor is immediately ready to measure.
How to adjust the settings is described in the following section (section
3.4.3).
User calibration after initial
commissioning
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On the basis of a reference measurement ("laboratory value"), check
whether the default settings deliver sufficiently accurate measured
values or whether you want to carry out a user calibration (see section
4.3 CALIBRATION).
3-7
Commissioning
CarboVis 70x IQ TS
3.4.2
Sensor structure
The physical sensor is the sensor with the instrument or model designation, CarboVis 70x IQ TS. The physical sensor processes the measurement signal (absorbance spectrum) and supplies up to 5
measurement results to the IQ SENSOR NET. The measurement results
are administrated like 5 sensors that differ in hierarchy as follows:
Main sensor
The sensor for carbon measurement is the main sensor.
It registers on the system under the designation, CarboVis 70x IQ TS
and the series number of the physical sensor.
Secondary sensor
The sensor for the measurement of total suspended solids is the
secondary sensor.
It registers on the system under the designation, SolidVis 70x IQ and
the series number of the physical sensor.
Virtual sensors
All other sensors for carbon measurement are virtual sensors.
You register on the system under the designation, CarboVis 70x IQ TS
and the series number of the physical sensor.
Sensor overlapping
settings and functions
Some settings and functions are sensor overlapping. Sensor overlapping settings are generally edited in the setting menu of the main sensor.
These are the most important sensor overlapping settings and functions:
 Measuring location
 Times of the measuring cycle (
Meas. interval, Cleaning duration, Adjustment phase etc.)
 Signal smoothing
Details on sensor overlapping functions are given in the following
section.
3-8
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3.4.3
Measuring cycle
Settings for the main sensor
A measuring cycle consists of the cleaning procedure, the adjustment
time for the measuring system and the determination of the measured
value. The following graphic demonstrates the relevant settings:
Cleaning
Measurement
Adjustment time
Measuring
cycle
Time
Measuring interval
Fig. 3-6
Carrying out settings
Measuring cycle of the UV-VIS sensor
Using <S>, switch from the measured value display to the main menu
of the settings. Then navigate to the setting menu (setting table) of the
sensor. The procedure is described in detail in your IQ SENSOR NET
system operating manual.
A change of the following settings will take some time (up to a few minutes) until it can be seen in the measured value display:
 Measuring mode
 Measuring location
 Number of C-sensors
Further changes can only be made when the last changes are visible
in the measured value display.
Default values are marked in bold.
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Commissioning
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Menu item
Settings
Explanations
Measuring mode
 COD spectr., total
The measured parameter is displayed
in the selected citation form.
 COD spectr., dissolv
 TOC spectr., correl.
 BOD spectr., correl.
 DOC spectr., correl.
 SAC 254, total
 SAC 254, dissolved
 UVT 254
Measuring location
 Outlet
 Inlet
 Activation
When changing the Measuring mode
setting, always check the Measuring
location setting.
If the previously set measurement location is not available for the selected
measuring mode, the measurement
location is automatically changed..
Measurement location or application of
the sensor.
 The possible measurement locations are displayed depending on the
currently set measuring mode.
 The sample matrix on which the calculation of the measured value is
based changes with the location of
the sensor.
The measurement location Activation
can only be selected for Measuring
mode COD spectr., dissolv.
Measuring range
-
Cal - # raw value 1
Value pairs of the user calibration (see section 4.3.2).
Note: Leave those values unchanged during the initial commissioning.
Cal - ref. value 1
Display of the measuring range
(see chapter 8 TECHNICAL DATA).
Cal - # raw value 2
Cal - ref. value 2
Zero adjustment
Factory
User
Setting of which zero adjustment is
used in the sensor.
 Factory zero adjustment or
 Zero adjustment carried out last
Signal smoothing
 On
 Off
3 - 10
Switching on/off the signal smoothing.
For more details, see Response time
t90.
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Menu item
Settings
Explanations
Response time t90
10 ... 60 min
Response time of the signal smoothing.
Depending on the sample matrix, measured values can vary more or less
strongly (e.g. due to foreign bodies or
air bubbles).
The signal filter (here, the Response
time t90) reduces the limits of variation
of the measured values.
The Response time t90 specifies the
time after which 90 % of a signal
change are displayed.
This menu item is only available with:
Signal smoothing = On
The specified time is used as a guide
value for low (10 min) to high (60 min)
signal smoothing and can deviate from
the value that was set.
Cleaning mode
 On
Switching on/off the automatic, timecontrolled cleaning function.
 Off
Cleaning type
 Ultrasound
 Air
 Ultrasound+air
Cleaning methods
This menu item is only available with:
Cleaning mode = On
The duration of the cleaning procedure
is defined in the sensor for all cleaning
types.
Note: The duration of the cleaning procedure with air can be adjusted for the
linked relay in the menu, 150 - Settings
of outputs and links / Relay function /
Sensorgesteuert / Pulsdauer.
Please note the software requirements
for the MIQ/CR3, MIQ/R6, MIQ/CHVPlus, DIQ/S 182 relays (see section 3.1).
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Save and quit
-
The system confirms the saving of the
settings and the display switches to the
next higher level.
Quit
-
The display switches to the next higher
level without saving the new settings.
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Commissioning
CarboVis 70x IQ TS
3.4.4
Carrying out settings
Settings for virtual sensors
Using <S>, switch from the measured value display to the main menu
of the settings. Then navigate to the setting menu (setting table) of the
sensor. The procedure is described in detail in your IQ SENSOR NET
system operating manual.
Default values are marked in bold.
Menu item
Settings
Explanations
Measuring mode
 COD spectr., total
The measured parameter is displayed
in the selected citation form.
 COD spectr., dissolv
 TOC spectr., correl.
 BOD spectr., correl.
 DOC spectr., correl.
 SAC 254, total
 SAC 254, dissolved
 UVT 254
Measuring location
 Outlet
 Inlet
 Activation
Measurement location or application of
the sensor.
 The possible measurement locations are displayed depending on the
currently set measuring mode.
 The sample matrix on which the calculation of the measured value is
based changes with the location of
the sensor.
The measurement location Activation
can only be selected for Measuring
mode COD spectr., dissolv.
Measuring range
-
Cal - # raw value 1
Value pairs of the user calibration (see section 4.3.2).
Note: Leave those values unchanged during the initial commissioning.
Cal - ref. value 1
Display of the measuring range
(see chapter 8 TECHNICAL DATA).
Cal - # raw value 2
Cal - ref. value 2
Main sensor
3 - 12
Information that there are further sensor overlapping settings in the setting
menu of the relevant main sensor
(Meas. interval, Cleaning duration, Signal smoothing etc.).
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CarboVis 70x IQ TS
Menu item
Settings
Explanations
Save and quit
-
The system confirms the saving of the
settings and the display switches to the
next higher level.
Quit
-
The display switches to the next higher
level without saving the new settings.
Fig. 3-7
3.4.5
Carrying out settings
140 - Settings of sensors and diff. sensors (virtual sensor)
Settings of the secondary sensor (TSS measurement)
Using <S>, switch from the measured value display to the main menu
of the settings. Then navigate to the setting menu (setting table) of the
sensor. The procedure is described in detail in your IQ SENSOR NET
system operating manual.
Default values are marked in bold.
Menu item
Settings
Explanations
Measuring mode
TSS
Display of the measuring mode
(TSS = total suspended solids measurement)
Measuring range
-
Display of the measuring range
(see chapter 8 TECHNICAL DATA).
Cal - # raw value 1
Value pairs of the user calibration for TSS measurement (see section
4.3.2).
Cal - ref. value 1
Cal - # raw value 2
Cal - ref. value 2
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Note: Leave those values unchanged during the initial commissioning.
3 - 13
Commissioning
Menu item
CarboVis 70x IQ TS
Settings
Main sensor
Explanations
Information that there are further sensor
overlapping settings in the setting menu of
the relevant main sensor (Meas. interval,
Cleaning duration, Signal smoothing
etc.).
Save and quit
-
The system confirms the saving of the settings and the display switches to the next
higher level.
Quit
-
The display switches to the next higher
level without saving the new settings.
Fig. 3-8
3 - 14
140 - Settings of sensors and diff. sensors (Secondary sensor)
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Measuring / Operation
CarboVis 70x IQ TS
4
Measuring / Operation
4.1
Determination of measured values
Physical sensor, series number xxx
Absorbance spectrum
of zero adjustment
Absorbance spectrum
of measurement
Main
sensor
software
Second. sensor
& virtual sensor
software
Main sensor meas. mode
(algorithm)
Second. sensor
& virtual sensor
meas. mode (algorithm)
Main sensor raw value
Secondary sensor
& virtual sensor raw value
User calibration data
of main sensor
User calibration data
of secondary sensor
& virtual sensor
Meas. value of main sensor
Meas. value of sec. sensor
& virtual sensor
IQ Sensor Net
Fig. 4-1
Determination of measured values
During a measurement, the absorbance spectrum of the test sample is
recorded and set against the stored absorbance spectrum of a zero
adjustment (measurement in ultrapure water). The algorithm for the
calculation depends on the selected application and/or the measuring
location. The resulting raw value can be adjusted to an independent
reference measurement with the aid of a so-called user calibration.
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4-1
Measuring / Operation
CarboVis 70x IQ TS
4.2
Measuring operation
CAUTION
Never look into the measuring window or put objects into the measuring window during operation! The emitted UV radiation can damage the
eyes!
In the case of authorized use, inadvertent eye contact with the light
beam is not possible.
Measured value display
Raw value,
identifiable by #
Measured value
Fig. 4-2
Factors affecting the
measured value
CarboVis 70x IQ TS in the measured value display with main sensor, secondary sensor and virtual sensor
The following factors can adversely affect the measurement quality:
 The measuring gap is not sufficiently filled and flowed through by the
test sample
 Foreign bodies and air bubbles are in the measuring gap
 Extraordinary changes (interferences) of the sample matrix
 Contaminated measurement windows due to difficult waste water
matrix
 Damaged measuring windows
 Lacking quality of the zero adjustment, e. g. due to contaminated
ultrapure water
 The user calibration is not representative (or erroneous)
4-2
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Measuring / Operation
CarboVis 70x IQ TS
4.3
Calibration
4.3.1
Overview
In the delivery condition, the sensor is precalibrated and ready to measure (see section 3.4.1).
There are two types of calibration that are included into the calculation
of the measured value at different points (see section 4.1):
 User calibration (see section 4.3.2)
 Sensor check/Zero adjustment (see section 4.3.3).
An overview diagram of the calibration procedures can be found on
page 4 - 9.
User calibration
With a user calibration you compensate for the influence of the test
sample. The user calibration requires a successful Sensor check (H2O
dest.) and a valid Zero adjustment.
We recommend to check the current user calibration against independent comparison measurements if you suspect a basic change of the
characteristics of the test sample. If the comparison measurements
show clear deviations, these can be compensated by a user calibration.
Recalibration after
changing the measuring
location
Each time after the application or measurement location
(and the setting, Measuring location) was changed, we
recommend to carry out a Sensor check (H2O dest.)
(and, if the Sensor check (H2O dest.) was not successful,
an additional Zero adjustment if necessary) with a subsequent user calibration.
The data of the user calibration are stored in the IQ SENSOR NET controller and thus assigned to the measuring location (not to the sensor).
The calibration data of the Zero adjustment are stored in the sensor.
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4-3
Measuring / Operation
Sensor check (H2O dest.)
CarboVis 70x IQ TS
The characteristics of a sensor and thus the measured values provided
by it change in the course of time.
The reasons for this can be the aging of the sensor, or contamination
or mechanical damage of the sensor. Contamination or mechanical
damage in the area of the measuring chamber or on the measurement
windows affect the measured values.
In UV-VISspectroscopy, very small contamination that is not visible to
the eye can considerably affect the measured value.
The proper and thorough cleaning of the sensor is the basis for reliable
measurement data.
A Sensor check (H2O dest.) determines the condition of the UV-VIS
sensor. By checking the sensor with the aid of the Sensor check (H2O
dest.) you can rapidly see any changes of the sensor and whether it
needs to be cleaned or if any other actions have to be taken.
A Sensor check (H2O dest.) should be carried out twice per year at
regular intervals. An extraordinary Sensor check (H2O dest.) should be
carried out if you suspect that the sensor has been damaged such as
by mechanical shock, or if the measured values do not seem plausible.
Zero adjustment
While the Sensor check (H2O dest.) just determines the current state
of the sensor, a Zero adjustment can be used to compensate for
changes of the sensor. A zero adjustment can be required if, for
example, the Sensor check (H2O dest.) is not successful even after the
sensor was thoroughly cleaned.
The sensor should always be very thoroughly cleaned prior to a zero
adjustment.
If the Zero adjustment is not successful, the sensor is blocked for measurement. A successful Zero adjustment is required for the determination of measured values.
Sensor check (standard)
4-4
Use the Sensor check (standard) to check the sensor with a standard
solution (see chapter 6 SPARE PARTS, MAINTENANCE EQUIPMENT, ACCESSORIES). During the check, the recorded spectrum is compared to a
reference spectrum of the standard solution stored in the sensor.
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Measuring / Operation
CarboVis 70x IQ TS
4.3.2
Calibration points and
value pairs
User calibration
The adjustment is carried out at one or two points within the measuring
range. A value pair is determined at each point. Each value pair
consists of the raw value of the UV-VIS sensor and the corresponding
reference value.
Each value pair has to be determined at the same time and place as
the test sample as possible. At the time of the calibration, the test
sample should be in a condition that is typical of the application.
Selection of calibration
points
If the required accuracy is low, the default setting of the first value pair
can be adopted unchanged. The first value pair is equivalent to the zero
point in this case. The second value pair should be close to the working
point of the application. This method results in a single-point calibration.
If the application has to cover a wide value range with high measuring
accuracy, both value pairs should be used for calibration. When doing
so, the calibration value pairs should be determined and input at the
limits of the application range as possible.
You obtain samples of different concentrations e. g. by taking two
samples during clearly different conditions of the plant (dry period and
rain period).
The measurement results will be ever more accurate the closer the
composition of the test sample corresponds to the status at the time of
the calibration. If there is a fundamental change of the characteristics
of the sample, a new calibration may be necessary.
Storage location of user
calibration data
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The calibration data of the user calibration are stored in the IQ Sensor
Net controller. They are loaded into the sensor during operation and
automatically assigned to the replacement sensor if the sensor is
exchanged.
4-5
Measuring / Operation
Performing a user
calibration
CarboVis 70x IQ TS
Proceed as follows if you want to perform a user calibration:
In the Settings of sensors and diff. sensors menu, set the Signal
smoothing setting to Off.
Subsequently, leave the menu with Save and quit.
How to navigate to the Settings of sensors and diff. sensors menu and
the operation of the menu is described in section 3.4.3.
1.
Bring the sensor into the measuring position.
2.
Switch to the measured value display with <M>.
3.
Wait for a measurement, read the raw value (without dimension) and note it down. In the case of fluctuating values,
observe several measuring cycles and average the individual
raw values.
4.
Take a sample at the same time as the measurement and as
close to the UV-VIS sensor as possible.
5.
Determine the reference value and note it down as a value pair
together with the raw value.
6.
For a two-point calibration:
Determine the second value pair (step 4 to step 6).
At least one value pair and a maximum of two value pairs can be
entered for a valid calibration. The values must be in ascending order.
If they are not in ascending order, a calibration error will occur.
7.
Sort the values pairs in ascending order.
8.
In the Settings of sensors and diff. sensors menu, enter the
value pair or pairs (see the following table).
The entry of calibration values outside the measuring range leads to a
calibration error.
4-6
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Measuring / Operation
CarboVis 70x IQ TS
Default values are marked in bold.
Menu item
Settings
Explanations
Cal - # raw value 1
0.00 ... 5000.00
Raw value of the first value pair
(lower concentration).
For single-point calibration, enter 0.
Cal - ref. value 1
0.00 ... 5000.00
Reference value of the first value pair
(lower concentration).
For single-point calibration, enter 0.
Cal - # raw value 2
0.00 ... 10.00 ... 5000.00 Raw value of the second value pair
(higher concentration) or raw value of the
single-point calibration.
Cal - ref. value 2
0.00 ... 10.00 ... 5000.00 Reference value of the second value pair
(higher concentration) or reference value
of the single-point calibration.
Calibration evaluation
The entered calibration data are checked for plausibility by the system.
The check can have the following results:
Display
Meaning/actions
Measured value display
Successful new valid calibration value pairs
were entered for the sensor.
"----"
Calibration value pairs not accepted. Sensor is blocked for measurement. A log book
message is generated.
Causes:
 Ascending order not observed.
 At least one value is outside the measuring range.
Information on the contents and structure of the log book and how you
can call it up is given in the LOG BOOK chapter of the IQ SENSOR NET
system operating manual.
The user calibration is not recorded in the calibration history. You can,
however, view the current value pairs in the Settings of sensors and
diff. sensors menu at any time.
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4-7
Measuring / Operation
CarboVis 70x IQ TS
4.3.3
Sensor check/Zero adjustment
Note
The sensor check or Zero adjustment must be carried out under absolutely clean conditions. If you do not work carefully enough the Zero adjustment can deteriorate the measuring quality.
Ultrapure water
(H2O dist.)
Storage location of the
Zero adjustment data
Steps
As ultrapure water exclusively use distilled or deionized water that is
suitable for analysis purposes. Especially make sure that the concentration of metrologically relevant substances (organic carbon
compounds) is negligible.
The data of the sensor checks are not stored.
The data of the user zero adjustment are stored in the sensor.
A successful Sensor check (H2O dest.) is the prerequisite for a valid
user calibration. After each Sensor check (H2O dest.) the sensor is
evaluated.
A changed sensor evaluation proves that the cleaning was effective.
The steps of the sensor check or Zero adjustment are identical except
for the used check solutions (ultrapure water or standard solution) and
are described together below. The sensor check and Zero adjustment
are carried out with the aid of the sensor sleeve.
4-8
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Measuring / Operation
CarboVis 70x IQ TS
Flowchart
Cleaning the sensor
Sensor check
(H2O dist.)
Assessment number
-40 ... +40 < -40 or
> +40
Clean the measurement windows
Rinse the measuring chamber
with ultrapure water several times
Carry out a sensor check (H2O)
After cleaning several times
without significant change of
the sensor assesssment:
Carry out zero adjustment
Zero adjustment
Operating error or defective sensor
(Sensor blocked for measurement)
Error
OK
After several zero adjustments:
Reset to:
Factory zero adjustment or
last valid user zero adjustment
Sensor check
(Standard)
OK
Error
After several sensor checks:
Operating error or defective sensor
Sensor OK
Main sensor:
Check user calibration
Fig. 4-3
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Virtual & secondary sensor:
Check user calibration
Overview of Sensortest/Zero adjustment and user calibration.
4-9
Measuring / Operation
Preparing the sensor
check or
Zero adjustment
CarboVis 70x IQ TS
Prepare the sensor check or Zero adjustment as follows:
1.
Switch to the measured value display with <M>.
2.
Use <> to select the UV-VIS sensor.
3.
Call up calibration with <C>. The Maintenance condition:
Linked outputs are frozen. window appears.
Fig. 4-4
Maintenance condition
By activating the maintenance condition, linked outputs remain in their
present state. The cleaning and the determination of measured values
are switched off. The measured value display shows a flashing, invalid
measured value ("----").
4.
Confirm the maintenance condition with <OK>.
5.
Take the sensor out of the test sample.
6.
Remove the blind plug or unscrew the compressed air connection from the sensor.
7.
Thoroughly clean the sensor enclosure, sensor sleeve and the
compressed air channels (see section 5.1 MAINTENANCE).
To finish the cleaning procedure, thoroughly rinse the entire
sensor with ultrapure water.
8.
Mount the cleaned sensor sleeve:
 Loosen both coupling rings on the sensor sleeve.
 Put the sensor sleeve on the sensor and align it:
– The measuring gap is in the center of the sensor sleeve
– The filling opening of the sensor sleeve and the measuring gap opening of the sensor are offset by 90°.
 Tighten both coupling rings on the sensor sleeve by hand.
4 - 10
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Measuring / Operation
CarboVis 70x IQ TS
Measuring
chamber
Sensor
sleeve
Fig. 4-5
Putting the sensor sleeve on the sensor
9.
Put the sensor in a horizontal position on a firm and vibrationfree surface. Turn the filling opening of the sensor sleeve
upward (Fig. 4-5).
10.
Rinse the measuring chamber with ultrapure water at least 3
times.
11.
 For Sensor check (H2O dest.) or Zero adjustment:
Fill the measuring chamber with ultrapure water.
or
 For Sensor check (standard):
Fill the measuring chamber with standard solution (see section 6).
12.
If there are any air bubbles on the measuring windows remove
them by gently knocking on the sensor sleeve with a bar.
Carry out the intended sensor check or Zero adjustment directly after
filling the sensor sleeve. If you wait longer, the result of the Sensor
check/Zero adjustment will be affected.
Carrying out the sensor
check or
13.
Select the required option with <> and <OK>:
 Sensor check (H2O dest.)
Zero adjustment
 Zero adjustment
 Sensor check (standard)
14.
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Confirm with <OK>.
A multipart checklist appears. Use it to check once more
whether all preparations have been completed.
4 - 11
Measuring / Operation
CarboVis 70x IQ TS
15.
Confirm each checklist with <OK> until the Start measurement
display appears.
Up to this point, you can break off the calibration procedure at any time
with the <ESC> key. The system continues to work with the old calibration data. The maintenance condition, however, has to be switched off
again in any case.
After starting the calibration with the <OK> key (step 16.) you can no
longer cancel the calibration procedure.
16.
Result after Sensor check
(H2O dest.)
Confirm with <OK>.
The measurement is started. After the end of the measurement
the result appears. With the Zero adjustment, the result is
entered in the calibration history at the same time.
Rating number
Meaning
Zero range
(-40 ... +40)
Sensor check (H2O dest.) successful (OK)
Positive number
(+40 ... +1000)
Measured values were too low.
Possible cause:
The measurement windows are contaminated.
Negative number
(-40 ... -1000)
Measured values were too high.
Possible cause:
During the last zero adjustment, the measurement windows were contaminated more than during the current sensor check.
(0 = no deviation)
If the rating number is not in the zero range:
Repeat the cleaning procedure and the Sensor check (H2O dest.) until
the rating number no longer changes significantly.
If the rating number is still outside the zero range, a new zero adjustment is necessary.
Result after Zero
adjustment
Result
Meaning
Sensor released for
measurement
OK
Zero adjustment successful.
Yes
Error
Zero adjustment not success-
No ("----")
ful.
If the result is erroneous, clean the sensor and all equipment once
again. Then carry out a new Zero adjustment and when doing so make
sure the conditions are absolutely clean.
4 - 12
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Measuring / Operation
CarboVis 70x IQ TS
If no valid zero adjustment is possible under the current conditions, you
can restore the readiness for measurement by measuring with an older
valid zero adjustment.
To do so, select the Zero adjustment setting in the sensor settings
Factory (factory zero adjustment) or User (last valid user zero adjustment).
Then check the measurement results with a Sensor check (standard).
Suitable standards (check equipment) for your sensor are available as
accessories (see chapter 6).
Result after
Sensor check (standard)
Completing the sensor
check or
Zero adjustment
Result
Meaning
OK
Sensor check (standard) successful.
Error
Sensor check (standard) not successful.
Possible cause: wrong or expired standard
After a successful sensor check or Zero adjustment, return to measurement as follows:
17.
Confirm the calibration result with <OK>.
18.
Confirm the message, "After successful cal ..." with <OK>.
The display returns to the measured value display. The measured value flashes because the sensor is still in the maintenance condition.
19.
Pour away the ultrapure water or standard solution and
remove the sensor sleeve.
20.
Screw in the blind plug or compressed air connector and install
the sensor at the measuring site.
21.
After the Sensor check (standard):
Thoroughly rinse the sensor and sensor sleeve with ultrapure
water.
22.
Switch off the maintenance condition (use <> to select
the UV-VIS sensor, press <OK> and make the setting in the
Display/Options menu).
23.
Switch to the measured value display with <M>. The measured
value stops flashing.
Store the sensor sleeve in a clean environment, e. g. in a plastic bag,
until the next sensor check or Zero adjustment.
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4 - 13
Measuring / Operation
4 - 14
CarboVis 70x IQ TS
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Maintenance and cleaning
CarboVis 70x IQ TS
5
Maintenance and cleaning
5.1
Maintenance
The UV-VIS CarboVis 70x IQ TS sensor operates maintenance-free.
Cleaning agents
5.2
Sensor cleaning
5.2.1
Cleaning agents and accessories
To clean the sensor, use the following cleaning agents only:
Contamination
Cleaning agents
Water-soluble substances
– Primary cleaning: Tapwater,
warm if possible
(30 - 50 °C)
– Precision cleaning: Household washing-up liquid + ultrapure water.
Lime deposits
5 % hydrochloric acid *
Grease deposits
Mixture of isopropanol and water
(approx. 70 % isopropanol) *
* For the final cleaning prior to a Sensor check or Zero adjustment, only
use cleaning agents with purity grade "for analysis". Finally, thoroughly
rinse the sensor with ultrapure water.
Accessories
 Sponge
 Plastic-bristled brushes of different sizes.
Interdental brushes are suitable for the cleaning of the compressed
air channels.
 Flocked cleaning cards (see accessories)
 Lens tissues
 Wash bottle
Note
Never use any pressure washer, steam blaster, abrasives or metal
brushes to clean the sensor. Risk of damaging the sensor.
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5-1
Maintenance and cleaning
CarboVis 70x IQ TS
5.2.2
General steps to be taken
Depending on the application site and the level of contamination of the
sensor as well as the coming job, the cleaning procedure includes the
following parts:
 Every cleaning procedure starts with a basic cleaning. It removes
tough grime such as incrustation of fouling matter, algae and biological deposits. If the sensor surface might be contaminated with
pathogenic germs it should also be disinfected.
 Cleaning the measuring gap: Removal of lime deposits.
 Cleaning the measuring gap: Removal of grease deposits.
Example 1
A heavily contaminated sensor from the inlet of a waste water treatment plant, for which a Sensor check or Zero adjustment should be
carried out, must run through all cleaning steps properly. During the
cleaning process always keep all surfaces moist to prevent already
dissolved contamination and detergents from drying ("working wet-onwet"). Finally, thoroughly rinse off all remaining cleaning agents with
ultrapure water.
Example 2
If the sensor from example 1 should be cleaned on site during a routine
visual inspection and should then continue measuring, a basic cleaning
might possibly be sufficient.
The quoted examples and the following descriptions are intended to
give a general guideline. Due to the sensor's wide range of application,
the type and level of contamination can considerably vary. Therefore,
the cleaning procedure has to be individually composed. If necessary,
individual cleaning steps have to be changed or repeated several times
until the result meets the requirements.
5-2
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Maintenance and cleaning
CarboVis 70x IQ TS
Steps of the basic
cleaning
5.2.3
Basic cleaning
1.
Take the sensor out of the test sample and remove any solid
matter deposits and incrustation of fouling matter manually
with a brush or sponge.
2.
Wash the sensor down with warm tapwater (30 - 50 °C).
Note: Do not use a pressure washer or steam blaster.
3.
If the sensor might be contaminated with pathogenic germs it
should be disinfected with a surface disinfectant. This also
applies to the cable and mounting parts.
Note: Follow the instruction manual of the disinfectant (reaction time!).
4.
Remove the blind plug or unscrew the compressed air connection from the sensor.
5.
Clean the sensor with soapy water. When doing so, clean the
area of the measuring gap and the compressed air channels
very thoroughly.
The compressed air channels can be cleaned with the aid of
interdental brushes and rinsed with soapy water from a wash
bottle.
6.
Soak the flocked cleaning cards with soapy water and use
them to clean the measuring gap as shown in the following figure. Cut suitable strips off the cleaning card to clean the bottom
of the measuring gap.
Then rinse the sensor with running warm tapwater and finally
with a lot of ultrapure water.
7.
Finally wipe the measurement window with a lens tissue.
After completing the cleaning procedure, screw in the blind plug or
compressed air connection.
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5-3
Maintenance and cleaning
CarboVis 70x IQ TS
5.2.4
Cleaning the measuring gap
To remove lime or grease deposits, use the flocked cleaning cards
together with the following detergents:
Proceeding
Contamination
Cleaning agents
Lime deposits
Hydrochloric acid 5 % for analysis
Grease deposits
Mixture of isopropanol and water (approx.
70 % isopropanol), made of 7 volume parts
isopropanol for analysis and 3 volume parts
ultrapure water
 Start by removing any lime deposits.
 Soak a flocked cleaning card with the relevant detergent and use it
to clean the measuring windows according to step 6. in section
5.2.3 BASIC CLEANING. If necessary, leave the cleaning card in the
measuring gap for a few minutes so the detergent can take effect.
 Thoroughly rinse with ultrapure water the measuring gap and the
surrounding areas moistened with detergent.
 Then wipe the measurement window with a lens tissue. The surface
of the measurement windows must be free of streaks.
 Protect the cleaned sensor against new contamination.
5-4
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Spare parts, maintenance equipment, accessories
CarboVis 70x IQ TS
6
General accessories,
replacement parts
Spare parts, maintenance equipment,
accessories
Description
Model
Order no.
Calibration sleeve
VIS/CV
481 074
20 flocked cleaning cards for
cleaning the measuring gap
VIS/CT
481 071
Cleaning set:
– 20 flocked cleaning cards
VIS C/SET
481 079
Description
Model
Order no.
Standard 1
with low concentration
for 5 mm UVVIS sensors
ST-1
481 077
Standard 2
with high concentration
for 1 mm UVVIS sensors
ST-2
481 078
Description
Model
Order no.
Compressed air cleaning set with
15 m compressed-air hose, to be
connected to a valve module or
Cleaning Air Box
SET/AP
481 075
Active valve module (does not
require a free relay output in the
IQ SENSOR NET system)
MIQ/CHV PLUS
480 018
Valve module for the
IQ SENSOR NET system 182
(external relay and compressed
air supply)
DIQ/CHV
472 007
Air compressor to be triggered by
relay, power supply 115 V AC
Cleaning Air Box
- 115 VAC
480 017
Air compressor to be triggered by
relay, power supply 230 V AC
Cleaning Air Box
- 230 VAC
480 019
– Cleaning solutions
Test equipment
Components for the
optional compressed air
cleaning system
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6-1
Spare parts, maintenance equipment, accessories
Mounting accessories
CarboVis 70x IQ TS
Description
Model
Order no.
Mounting set for horizontal installation with EH/F 170 swing mounting assembly
VIS Set/EH
481 073
Flow-through armature
VIS FT-1
480 080
Information on other IQ SENSOR NET accessories is given in the WTW
catalog and on the Internet.
6-2
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What to do if...
CarboVis 70x IQ TS
7
"----" display
(invalid measured value)
What to do if...
Cause
Remedy
– User calibration values
entered incorrectly
– Correct the entry and enter
once again (section 4.3.2)
Repeat
* Sensor check (H2O dest.) or
* Zero adjustment or
* Sensor check (standard).
* Sensor check (H2O dest.) or
* Zero adjustment or
* Sensor check (standard)
defective
Implausible measured
values
Check conditions, especially
cleanliness (section 4.3.3)
– Zero adjustment still erroneous after several trials
– Contact WTW
– Unknown
– See log book
Cause
Remedy
– Erroneous user calibration
– Repeat user calibration. Make
sure the samples for comparison are representative.
– Substantial change of test
sample (sample matrix)
– Carry out new user calibration
– Measurement windows dirty
– Clean the measurement windows
– Sensor setting wrong
– Check and, if necessary, correct the Measuring mode, Measuring location sensor settings
– Carry out new user calibration
– Optical system maladjusted,
e. g. due to inadmissible
mechanical shock
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– Carry out
* Sensor check (H2O dest.) or
* Zero adjustment or
* Sensor check (standard)
7-1
What to do if...
Drifting measured values
CarboVis 70x IQ TS
Cause
Remedy
– Cleaning efficiency too low measurement windows
becoming more and more
contaminated
– Clean the measurement windows (section 5.2.4)
– Use other cleaning method
– Select different measurement
location
– Set longer cleaning duration
– Set more frequent cleaning
procedures
– Install optional compressed air
cleaning device
– Failure of the optional compressed air cleaning system
– Clean the measurement windows (section 5.2.4)
– Check all components of the
compressed air cleaning system (compressor, compressed
air line, UV/VIS sensor, rinsing
openings)
Display of OFL
Measured values
fluctuating heavily
7-2
– Substantial change of test
sample (sample matrix)
– Carry out new user calibration
Cause
Remedy
– Measuring range exceeded
– Check process
– Foreign matter in the measuring gap
– Clean the measuring gap (section 5.2.3)
– Erroneous user calibration
– Repeat user calibration. Make
sure the samples for comparison are representative.
Cause
Remedy
– Gas bubbles in front of the
measurement windows
– Check the position within the
process and the installation
position
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What to do if...
CarboVis 70x IQ TS
Measured values too low
or too high
Display of ERROR
Cause
Remedy
– Gas bubbles in front of the
measurement windows
– Check the installation position
of the sensor
– Measurement windows dirty
– Clean the measurement windows
Cause
Remedy
– UV-VIS sensor not correctly
connected
– Check the assignment of the
terminal connections
– Load at a power supply module too high
– Install another power supply
module in the vicinity of the
sensor
– IQ SENSOR NET cable towards the CarboVis 70x IQ
TS too long (voltage drop too
great)
– Install another power supply
module in the vicinity of the
sensor
– Electrical connection between power supply module
and CarboVis 70x IQ TS is interrupted
– Check the cable connection
step-by-step starting with the
power supply module, and
replace any defective cable
sections.
– Check the contacts on the MIQ
modules (stack mounting).
Clean any dirty contacts. Carefully bend back contact springs
that have been pressed flat or
bent (pay attention to sufficient
spring tension)
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7-3
What to do if...
7-4
CarboVis 70x IQ TS
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Technical data
CarboVis 70x IQ TS
Measuring principle
Wavelength range
Measuring gap (optical
layer thickness)
Carbon measurement,
1 mm gap width
8
Technical data
8.1
Measurement characteristics
Spectrophotometric absorption measurement; integrated microprocessor electronics, shielded 2-wire connection for
power and data transmission.
200 - 720 nm
CarboVis 701 IQ TS
1 mm
CarboVis 705 IQ TS
5 mm
Measuring
location
Measuring mode
Measuring range
Resolution
Inlet
COD spectr., total
0 ... 20000 mg/L
1 mg/L
COD spectr., dissolv
0 ... 12500 mg/L
1 mg/L
TOC spectr., correl.
0 ... 20000 mg/L
1 mg/L
DOC spectr., correl.
0 ... 12500 mg/L
1 mg/L
BOD spectr., correl.
0 ... 8000 mg/L
1 mg/L
SAC 254, total
0 ... 5000 1/m
1 1/m
SAC 254, dissolved
0 ... 3000 1/m
1 1/m
UVT 254
0.0 ... 100.0 %
0.1 %
COD spectr., dissolv
0 ... 12500 mg/L
1 mg/L
DOC spectr., correl.
0 ... 12500 mg/L
1 mg/L
SAC 254, total
0 ... 5000 1/m
1 1/m
SAC 254, dissolved
0 ... 3000 1/m
1 1/m
UVT 254
0.0 ... 100.0 %
0.1 %
Activation
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8-1
Technical data
8-2
CarboVis 70x IQ TS
Measuring
location
Measuring mode
Measuring range
Resolution
Outlet
COD spectr., total
0 ... 4000 mg/L
1 mg/L
COD spectr., dissolv
0 ... 4000 mg/L
1 mg/L
TOC spectr., correl.
0 ... 2500 mg/L
1 mg/L
DOC spectr., correl.
0 ... 2500 mg/L
1 mg/L
BOD spectr., correl.
0 ... 2500 mg/L
1 mg/L
SAC 254, total
0 ... 3000 1/m
1 1/m
SAC 254, dissolved
0 ... 3000 1/m
1 1/m
UVT 254
0.0 ... 100.0 %
0.1 %
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Technical data
CarboVis 70x IQ TS
Carbon measurement,
5 mm gap width
TSS measurement,
1 mm gap width
TSS measurement,
5 mm gap width
Measuring
location
Measuring mode
Measuring range
Resolution
Outlet
COD spectr., total
0.0 ... 800.0 mg/L
0.1 mg/L
COD spectr., dissolv
0.0 ... 800.0 mg/L
0.1 mg/L
TOC spectr., correl.
0.0 ... 500.0 mg/L
0.1 mg/L
DOC spectr., correl.
0.0 ... 500.0 mg/L
0.1 mg/L
BOD spectr., correl.
0.0 ... 500.0 mg/L
0.1 mg/L
SAC 254, total
0.0 ... 600.0 1/m
0.1 1/m
SAC 254, dissolved
0.0 ... 600.0 1/m
0.1 1/m
UVT 254
0.0 ... 100.0 %
0.1 %
Measuring
location
Measuring
mode
Measuring range
Resolution
Inlet
TSS
0.00 ... 15.00 g/L
0.01 g/L
Outlet
TSS
0 ... 4500 mg/L
1 mg/L
Measuring
location
Measuring
mode
Measuring range
Resolution
Outlet
TSS
0.0 ... 900.0 mg/L
0.1 mg/L
The quoted measuring ranges are nominal measuring ranges that are
theoretically possible. In practice, real measuring ranges exist that are
given by the limits of photometric determination. The limits are significantly influenced by the light scattering due to solids and the absorption
of accompanying substances (sample matrix). Therefore, no fixed
measuring range can be determined beforehand.
8.2
Suitability and areas of
application
Measuring medium:
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Application conditions
Municipal wastewater with a low proportion of industrial wastewater
pH value
4 - 12
Flow rate
< 3 m/s
Temperature
0 °C ... + 45 °C
(32 °F ... + 113 °F)
8-3
Technical data
Pressure resistance
CarboVis 70x IQ TS
Sensor with connected SACIQ (SW) sensor connection cable:
Max. allowed overpressure
105 Pa (1 bar)
The sensor meets all requirements according to article 3(3) of 97/23/
EC ("pressure equipment directive").
Type of protection
Sensor with connected SACIQ (SW) sensor connection cable:
IP X8, 1 bar (105 Pa)
Immersion depth
Operating position
8-4
min
The measuring gap must be
filled with test sample.
max
10 m depth
Any
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Technical data
CarboVis 70x IQ TS
8.3
Dimensions
(in mm)
General data
865
hock protection:
891
774
381
Ø 96
Ø 60
Socket SACIQ...
With shock protection:
891
120
Ø 96
Weight
Connection technique
Materials
Storage temperature
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Approx. 3.8 kg (without shock protectors and without sensor connection cable)
Approx. 4.8 kg (with shock protectors but without sensor connection
cable)
Connection via SACIQ (SW) sensor connection cable
Sensor shaft
Titan Grade 2
Center piece
PEEK
End cap
PEEK
Measurement window
Sapphire
Plug head connector housing
POM
Plug, 3-pole
ETFE (blue) Tefzel®
Protection ring
POM
- 10 °C ... + 50 °C (14 ... 122 °F)
8-5
Technical data
Instrument safety
CarboVis 70x IQ TS
Applicable norms
– EN 61010-1
– UL 61010-1
– CAN/CSA C22.2#61010-1
– IEC 62471
Test certificates
cETLus, CE
Conforms to ANSI/UL 61010-1
Certified to CAN/CSA C22.2#61010-1"
2001759
8.4
8-6
Electrical data
Nominal voltage
Max. 24VDC
via the IQ SENSOR NET (for more
details, see chapter TECHNICAL
DATA of the IQ SENSOR NET system operating manual)
Power consumption
8W
Protective class
III
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Indexes
CarboVis 70x IQ TS
9
Indexes
9.1
Explanation of the messages
This chapter contains a list of all the message codes and related
message texts that can occur in the log book of the IQ SENSOR NET
system for the CarboVis 70x IQ TS.
Information on the contents and structure of the log book and the structure of the message code is given in the LOG BOOK chapter of the
IQ SENSOR NET system operating manual.
The last three digits of the message code form the component code. It
identifies the component (active component) that caused the message:
Some error messages contain an internal error code, starting with "#".
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Module code
Component
3A3
CarboVis 701 IQ
3A4
CarboVis 705 IQ
3A7
SolidVis 701 IQ
3A8
SolidVis 705 IQ
3AR
NitraVis 705 IQ - virtual
3AS
CarboVis 701 IQ - virtual
3AT
CarboVis 701 IQ - virtual
3AU
CarboVis 701 IQ - virtual
3AV
CarboVis 701 IQ - virtual
3AW
CarboVis 705 IQ - virtual
3AX
CarboVis 705 IQ - virtual
3AY
CarboVis 705 IQ - virtual
3AZ
CarboVis 705 IQ - virtual
541
BasicVis IQ
9-1
Indexes
CarboVis 70x IQ TS
9.1.1
Error messages
Message code
Message text
EA2541
Sensor temperature too high!
* Check process and application
EA3541
Sensor temperature too low!
* Check process and application
EAI541
Zero adjustment erroneous
* Clean the sensor and sensor sleeve repeatedly
* Position the sensor sleeve according to operating manual
* Rinse the measuring chamber with ultrapure water several times
* Fill the measuring chamber with ultrapure water
* Repeat the zero adjustment
EAM3Ax
Meas. range exceeded or undercut
* Check process
EC33Ax
User calibration erroneous,
Check raw value / reference value pairs:
* Set all values within the measuring range
(see operating manual)
* Enter value pairs in ascending order
EI1541
Operational voltage too low
* Check installation and cable lengths, Follow installation instructions
* Power supply module(s) overloaded, add power supply module(s)
* Check terminal and module connections
* Defective components, replace components
EI2541
Operational voltage too low, no operation possible
* Check installation and cable lengths, Follow installation instructions
* Power supply module(s) overloaded, add power supply module(s)
* Check terminal and module connections
* Defective components,
replace components
ES2541
Humidity to high in sensor
* Contact service
ES3541
Failure optical measurement: deviation to calibration for reference
channel too high
* Contact service
ES4541
Failure optical measurement: hardware lamp
* Contact service
9-2
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Indexes
CarboVis 70x IQ TS
Message code
Message text
ES5541
Failure optical measurement: hardware
* Contact service
ES6541
Failure optical measurement: software
* Contact service
ES7541
Failure optical measurement: software BIOS
* Contact service
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9-3
Indexes
CarboVis 70x IQ TS
9.1.2
Info messages
Message code
Message text
IAC541
Zero adjustment was successfully carried out
* Carry out sensor check
* If required, carry out new user calibration
IC3541
The factory zero adjustment was activated. Make sure the sensor operates correctly.
IC4541
The last valid user zero adjustment was activated. Make sure the sensor operates correctly.
IC5541
Invalid user zero adjustment was replaced by last valid user calibration.
Caution! Wrong measured values possible. Carry out a new successful
zero adjustment to make sure the sensor operates correctly.
IC6541
The invalid user zero adjustment was replaced by the factory zero
adjustment. Caution! Wrong measured values possible. Check
whether the sensor operates correctly or carry out a new successful
user zero adjustment.
9-4
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Indexes
CarboVis 70x IQ TS
9.2
Status info
The status info is a coded piece of information on the current status of
a sensor. Each sensor sends this status info to the controller. The status info of sensors consists of 32 bits, each of which can have the value
0 or 1.
0 1 2 3 4 5 6 7
Status info,
general structure
8 9 10 11 12 13 14 15
1 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
(general)
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
(internal)
16 17 18 19 20 21 22 23
24 25 26 27 28 29 30 31
The bits 0 - 15 are reserved for general information.
The bits 16 - 21 are reserved for internal service information.
You obtain the status info:
 via a manual query in the Settings/Service/List of all components
menu (see system operating manual)
 by an automated query
– of a superordinate process control (e. g. when connected to the
Profibus)
– of the IQ Data Server (see operating manual of the
IQ SENSOR NET software pack)
The evaluation of the status info, e.g. in the case of an automated
query, has to be made individually for each bit.
Status info
CarboVis 70x IQ TS
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Status bit
Description
Bit 0
Component hardware defective
Bit 1
Component hardware defective xxx
Bit 2
Optical measuring range exceeded
Bit 3-31
-
9-5
Indexes
9-6
CarboVis 70x IQ TS
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Appendix: Glossary
CarboVis 70x IQ TS
10
Appendix: Glossary
Resolution
Smallest difference between two measured values that can be
displayed by a meter.
BSB, BOD
Abbreviation for the "Biochemical Oxygen Demand". The biochemical
oxygen demand of the amount of oxygen required by microorganisms
in order to aerobically decompose organic substances in an aqueous
solution.
CSB, COD
Abbreviation for the "Chemical Oxygen Demand". The chemical oxygen demand is the equivalent amount of oxygen that is required for
the complete oxidation of the organic (major part) and anorganic
(minor part) substances in an aqueous solution.
DOC
Abbreviation for dissolved organic carbon. Concentration of
dissolved, organically bound carbon in water.
Absorbance
(Absorption)
Attenuation of the light beam when it penetrates the sample.
Adjusting
To manipulate a measuring system so that the relevant value (e. g. the
displayed value) differs as little as possible from the correct value or
a value that is regarded as correct, or that the difference remains
within the tolerance.
Calibration
Comparing the value from a measuring system (e. g. the displayed
value) to the correct value or a value that is regarded as correct.
Often, this expression is also used when the measuring system is
adjusted at the same time (see adjusting).
Calibration value pair
Value pair consisting of the raw value measured by the UV-VIS
sensor, and a reference value measured e. g. by a laboratory determination. The calibration value pairs are the result of the user calibration.
Concentration
Mass or amount of a dissolved substance per volume, e. g. in g/L or
mol/L.
Measuring system
The measuring system comprises all the devices used for measuring,
e. g. measuring instrument and sensor. In addition, there is the cable
and possibly an amplifier, terminal strip and armature.
Measured parameter
The measured parameter is the physical dimension determined by
measuring, e. g. pH, conductivity or D.O. concentration.
Measured parameter
(correlated)
With the measuring method used, a correlated measured parameter
is not determined directly. A correlated measured parameter can,
however, be derived from a determinable measured parameter. The
precondition for this is that there is a reproducible interrelationship
(correlation) between the determinable and correlated measured
parameter.
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10 - 1
Appendix: Glossary
CarboVis 70x IQ TS
Test sample
Designation of the test sample ready to be measured.
Measuring gap
The measuring gap is between the two measurement windows. In the
measuring gap, the light beam penetrates the test sample.
Measured value
The measured value is the special value of a measured parameter to
be determined. It is given as a combination of the numerical value and
unit (e. g. 3 m; 0.5 s; 5.2 A; 373.15 K).
The measured value is determined from the raw value taking into
account the data from a user calibration.
The measured value is displayed together with the raw value in the
measured value display.
Zero adjustment
Measuring and saving the absorbance spectrum of ultrapure water.
Defines the zero points in the spectrum for all wavelengths. The light
beam is not alleviated at the zero point. The zero point influences the
calculation of the raw value.
Sample matrix
Composition of the test sample of different individual substances.
Reference sample
Random sample of the test sample for comparative chemical-analytical laboratory analyses intended for user calibration.
Ultrapure water (H2O
dist.)
Ultrapure water is distilled or deionized water suitable for analysis
purposes.
Raw value
The raw value is determined from the spectrum while taking into
account the data from the zero adjustment. The raw value is displayed
on the right side of the measured value in the measured value display.
SAK, SAC
Spectral absorption coefficient at a certain wavelength. The SAC 254
value is a measure of the contents of organic compounds.
Spectrum
Distribution of the absorbance depending of the wavelength.
With the aid of the zero adjustment and user calibration, the measured
values are calculated from the spectrum.
TOC
Abbreviation for total organic carbon. Total amount of organically
bound carbon in water.
UVT
Transmission measurement at a certain wavelength.
The UVT-254 value is standardized to 10 mm gap width.
10 - 2
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CarboVis 70x IQ TS
Contact Information
11
Contact Information
11.1
Ordering & Technical Support
Telephone:
(800) 897-4151
(937) 767-7241
Monday through Friday, 8:00 AM to 5:00 PM ET
Fax:
(937) 767-1058
Email:
environmental@ysi.com
Mail:
YSI Incorporated
1725 Brannum Lane
Yellow Springs, OH 45387
USA
Internet:
www.ysi.com
When placing an order please have the following information available:
YSI account number (if available)
Model number or brief description
Quantity
11.2
Name and Phone Number
Billing and shipping address
Purchase Order or Credit Card
Service Information
YSI has authorized service centers throughout the United States and
Internationally. For the nearest service center information, please visit
www.ysi.com and click ‘Support’ or contact YSI Technical Support
directly at 800-897-4151.
When returning a product for service, include the Product Return form
with cleaning certification. The form must be completely filled out for an
YSI Service Center to accept the instrument for service. The Product
Return form may be downloaded at www.ysi.com and clicking on the
‘Support‘ tab.
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11 - 1
Contact Information
11 - 2
CarboVis 70x IQ TS
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1) The tissue in plants that brings water upward from the roots;
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We're 12,500 people unified in a common purpose: creating innovative solutions
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For more information on how Xylem can help you, go to www.xyleminc.com
YSI
1725 Brannum Lane
Yellow Springs, OH 45387
Tel: +1 937-767-7241; 800-765-4974
Fax: +1 937-767-1058
Email: environmental@ysi.com
Web: www.ysi.com
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