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Operating manual
IQ S
ENSOR
N
ET
TriOxmatic
®
701 IQ
ba76047e01 01/2012
IQ S
ENSOR
N
ET
D.O. sensor
TriOxmatic
®
701 IQ
Note
For the most recent version of the manual, please visit www.ysi.com
.
2
Contact
Copyright
YSI
1725 Brannum Lane
Yellow Springs, OH 45387 USA
800-765-4974
Email: [email protected]
Internet: www.ysi.com
©
2012 Xylem Inc.
ba76047e01 01/2012
TriOxmatic
®
701 IQ List of contents
ba76047e01 01/2012
TriOxmatic
®
701 IQ - List of contents
1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
How to use this component operating manual . . . . . . . . 1-1
®
701 IQ D.O. sensor . . . . . 1-2
Recommended fields of application . . . . . . . . . . . . . . . . 1-2
2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Authorized use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
General safety instructions . . . . . . . . . . . . . . . . . . . . . . . 2-2
3 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
®
701 IQ setting table . . . . . . . . . . . . . . . . . . 3-4
4 Measuring / Operation . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
General information on calibration . . . . . . . . . . 4-1
Calibration in water vapor-saturated air . . . . . . 4-2
Calibration history . . . . . . . . . . . . . . . . . . . . . . . 4-4
Reactivation of the last valid calibration . . . . . . 4-4
Function check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
5 Maintenance, cleaning, disposal, and replacement . 5-1
General maintenance instructions . . . . . . . . . . . . . . . . . 5-1
Cleaning the sensor shaft and membrane . . . . . . . . . . . 5-2
Changing the electrolyte and membrane cap . . . . . . . . 5-5
Cleaning the electrodes . . . . . . . . . . . . . . . . . . . . . . . . 5-10
Cleaning the gold working electrode . . . . . . . . 5-12
Cleaning the silver counter electrode . . . . . . . 5-13
Checking the sensor for freedom from zero-current . . 5-20
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-21
Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-21
Maintenance equipment and replacement parts . . . . . 5-22
6 What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
0 - 1
List of contents TriOxmatic
®
701 IQ
7 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
Measurement characteristics . . . . . . . . . . . . . . . . . . . . .7-1
Application characteristics . . . . . . . . . . . . . . . . . . . . . . .7-2
General data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-3
Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-4
Characteristic data on delivery . . . . . . . . . . . . . . . . . . . .7-4
8 Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
Ordering & Technical Support . . . . . . . . . . . . . . . . . . . .8-1
Service Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-1
9 Indexes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
Explanation of the messages . . . . . . . . . . . . . . . . . . . . .9-1
Error messages . . . . . . . . . . . . . . . . . . . . . . . . .9-1
Info messages . . . . . . . . . . . . . . . . . . . . . . . . . .9-2
Status info . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-3
0 - 2
ba76047e01 01/2012
TriOxmatic
®
701 IQ
Structure of the
IQ S
ENSOR
N
ET operating manual
1 Overview
1.1
How to use this component operating manual
IQ Sensor Net Operating Manual
System
Operating
Manual
(Ring Binder)
Overview
IQ Sensor
Operating
Manual
MIQ Module
Operating
Manual
MIQ Terminal
Operating
Manual
Component Operating Manuals
Fig. 1-1 Structure of the IQ S
ENSOR
N
ET
operating manual
The IQ S
ENSOR
N
ET
operating manual has a modular structure like the
IQ S
ENSOR
N
ET
system 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.
ba76047e01 01/2012
1 - 1
Overview TriOxmatic
®
701 IQ
1.2
Structure of the TriOxmatic
®
701 IQ D.O. sensor
1 2 4
1 - 2
5 6 7
Fig. 1-2 Structure of the TriOxmatic
®
701 IQ
3
4
1
2
Protective hood
WP 25i membrane head
Electrode unit
Shaft
Electrode unit:
5 Gold working electrode (cathode)
6
7
Silver counter electrode (anode)
Reference electrode
1.3
Recommended fields of application
Stationary measurements in water/wastewater applications.
ba76047e01 01/2012
TriOxmatic
®
701 IQ Safety
Special user qualifications
General safety instructions
2 Safety
This component operating manual contains special instructions that must be followed during the operation of the TriOxmatic
®
701 IQ D.O. sensor. Thus, it is essential to read this component operating manual before carrying out any work using this sensor. In addition to this manual, the S
AFETY
chapter of the IQ S
ENSOR
N
ET
system operating manual must be followed.
Always keep this component operating manual together with the system operating manual and any other component operating manuals in the vicinity of the IQ S
ENSOR
N
ET
system.
The D.O. sensor was developed for applications in online measurement - essentially in wastewater treatment plants. Thus, we assume that the operators are familiar with the necessary precautions to take when dealing with chemicals as a result of their professional training and experience.
Safety instructions in this operating manual can be recognized by the warning symbol (triangle) in the left column. The signal word (e. g.
"Caution") indicates the level of the danger:
Warning
indicates instructions that must be followed precisely in order to prevent serious dangers to persons.
Caution
indicates instructions that must be followed precisely in order to avoid slight injuries or damage to the instrument or the environment.
Other labels
Note
indicates notes that draw your attention to special features.
Note
indicates cross-references to other documents, e.g. operating manuals.
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2 - 1
Safety TriOxmatic
®
701 IQ
2.1
Authorized use
The authorized use of the TriOxmatic
®
701 IQ comprises its use as a
D.O. sensor in the IQ S
ENSOR
N
ET
.
The technical specifications according to chapter 7 T
must be observed. Only operation according to the instructions in this operating manual is authorized.
Any other use is considered to be unauthorized. Unauthorized use invalidates any claims with regard to the guarantee.
Caution
Only connect and operate the sensor together with IQ S
ENSOR
N
ET accessories.
Function and operational safety
2.2
General safety instructions
The sensor left the factory in a safe and secure technical condition.
The failure-free function and operational safety of the sensor is only guaranteed if the generally applicable safety measures and the special safety instructions in this operating manual are followed during its use.
The failure-free function and operational safety of the sensor is only guaranteed under the environmental conditions that are specified in
.
The specified temperature (chapter 7 T
maintained during the operation and transport of the sensor. Protect the sensor, particularly against frost or overheating.
Caution
The sensor may only be opened by specialists authorized by YSI.
The only exceptions to this are the activities described in chapter
2 - 2
ba76047e01 01/2012
TriOxmatic
®
701 IQ Safety
Safe operation
Obligations of the operator
If safe operation is no longer possible, the sensor must be taken out of operation and secured against inadvertent operation.
Safe operation is no longer possible if the sensor:
has been damaged in transport
has been stored under adverse conditions for a lengthy period of time
is visibly damaged
no longer operates as described in this manual.
If you are in any doubt, contact the supplier of your sensor.
The operator of the sensor must ensure that the following rules and regulations are followed when dealing with hazardous substances:
EEC directives for protective labor legislation
National protective labor legislation
Safety regulations
Safety data sheets of the chemical manufacturer.
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2 - 3
Safety TriOxmatic
®
701 IQ
2 - 4
ba76047e01 01/2012
TriOxmatic
®
701 IQ Commissioning
3 Commissioning
3.1
Scope of delivery
TriOxmatic
®
701 IQ
ZBK 25i accessory case
The sensor is filled with electrolyte and provided with a protective hood and protective caps.
Operating manual.
Connection cable
Are the plug connections dry?
Minimum approach flow
3.2
Installation
The SACIQ sensor connection cable is required to connect the sensor.
Information on this and other IQ S
ENSOR
N
ET
accessories is given in the YSI catalog and on the Internet.
Note
How to connect the SACIQ sensor connection cable to the terminal strip of an MIQ module is described in chapter 3 I
NSTALLATION
of the
IQ S
ENSOR
N
ET
system operating manual.
Before connecting the sensor and sensor connection cable, please make sure that 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. Use a sensor holder or an armature. Information on this and other
IQ S
ENSOR
N
ET
accessories is given in the YSI catalog and on the
Internet.
The minimum required approach flow at the sensor must be present
during measurement (see chapter 7 T
approach flow can, e.g. be achieved by:
the flow rate of the water
turbulence in the activated sludge tanks in the vicinity of the sensor.
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3 - 1
Commissioning TriOxmatic
®
701 IQ
Connecting the sensor to the sensor connection cable
1 Take the protective caps off the plug connections of the sensor and the SACIQ sensor connection cable and keep them safe.
2 Plug the jack of the SACIQ 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 jack.
3 Then, screw the coupling ring (2) of the sensor connection cable onto the sensor up to the stop.
SACIQ
1
Fig. 3-1 Connecting the sensor
2
3 - 2
ba76047e01 01/2012
TriOxmatic
®
701 IQ Commissioning
3.3
Commissioning / Getting the instrument ready for measuring
1 Pull the protective cap off the protective hood of the sensor.
2 Leave the sensor to lie in the air for at least 60 minutes while it is switched on (polarization).
Note
For the sensor to polarize, the following conditions must be fulfilled:
The sensor is connected with the IQ S
ENSOR
N
ET
system via the
SACIQ sensor connection cable.
The IQ S
ENSOR
N
ET
system is in operation
The sensor has been identified by the IQ S
ENSOR
N
ET
system.
Precision measurements
3 If required, assign a user-defined name to the sensor (see relevant IQ S
ENSOR
N
ET
system operating manual).
4
Set the sensor (see section 3.4).
5
Calibrate the sensor (see section 4.2 C
).
Recommendation: In order to carry out precision measurements, leave the sensor to polarize for a longer period of time, e.g. overnight, and recalibrate it the following day.
ba76047e01 01/2012
3 - 3
Commissioning TriOxmatic
®
701 IQ
Setting
Measuring mode
Measuring range
Concentration
Measuring range
Saturation
Calibration
(software version
2.21 or higher)
3.4
TriOxmatic
®
701 IQ setting table
Selection/values
Concentration
Saturation
0 ... 20.00 mg/l
0 ... 60.0 mg/l
0 ... 20.00 ppm
0 ... 60.0 ppm
0 ... 200.0 %
0 ... 600 %
valid
invalid
last valid
active
abort
Temperature mode
°C
°F
Salinity
On
Off
Explanation
Unit of the measured value on the measured value display.
These measuring ranges are available for selection.
These measuring ranges are available for selection.
Displays and determines which calibration data the measured value calculation is based on. The active calibration is displayed
in the calibration history (see section 4.2.3).
valid indicates that a valid calibration is available. The value cannot be changed.
invalid is displayed if the last calibration is invalid and the sensor is blocked for measurement. In this case, you can switch to the values of the last valid calibration, provided a valid calibration is available in the sensor.
Thus you activate the last valid calibration stored in the sensor the next time you exit the setting table with Save and quit. The next time the setting table is opened, valid is displayed.
active indicates that the sensor is being calibrated. If Cancel is selected, the active calibration procedure is canceled as soon as the setting table is exited with Save and quit.
Unit of the measured temperature value
(Celsius, Fahrenheit).
Determines whether the entered salinity should be taken into account.
3 - 4
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TriOxmatic
®
701 IQ Commissioning
Salinity input
Temp. adjustment
-1.5 K ... +1.5 K
Save and quit
Quit
2.0 ... 70.0
The entry of the salinity enables a salt content correction that compensates for the effect of salt contents > 0.1 % on the oxygen measurement.
The salt content correction is recommended for measurements in salt-contaminated wastewater (salinity
≥ 2.0 corresponding to a conductivity of
≥ 3.4 mS/cm at a reference temperature
TREF
= 20 °C).
The temperature compensation enables the tolerances of the temperature sensor to be balanced (shifting of the zero point by
±1.5 K).
Notes:
Due to the thermal capacity of the sensor, it is necessary to place it in a container with at least 2 liters of water.
Leave the sensor in this container for at least 15 minutes while stirring occasionally until the balancing can be performed.
With temperature differences between the water and sensor > 10 °C, leave the sensor for at least 1 hour in this container while stirring occasionally until the balancing can be performed.
The system confirms the saving of the settings and the display switches to the next higher level.
The display switches to the next higher level without saving the new settings.
Carrying out settings
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 exact procedure is given in the relevant IQ S
ENSOR
N
ET system operating manual.
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3 - 5
Commissioning TriOxmatic
®
701 IQ
3 - 6
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TriOxmatic
®
701 IQ Measuring / Operation
4 Measuring / Operation
4.1
Measuring
1 Submerse the sensor in the sample.
2 Read the measured value on the terminal of the IQ S
ENSOR
N
ET
system.
Why calibrate?
When to calibrate?
Calibration procedures
Calibration log
Maintenance condition
4.2
Calibration
4.2.1
General information on calibration
During the operation of a D.O. sensor, the slope of the D.O. sensor changes with time. The calibration procedure determines the current slope of the sensor.
Calibrate before measuring and at regular intervals (depending on the application).
Ideally, calibration takes place in water vapor-saturated air. To do so, position the sensor approx. 2 cm above a water surface, for example in a narrow bucket or similar container with water.
In the case of air temperatures under 5 °C we recommend to calibrate not in air but in air-saturated water that has a higher temperature. You obtain air-saturated water by pouring water several times in and out of two vessels so that it sparkles.
The calibration history contains the calibration log of the current and the last calibration. You can call up the calibration reports for the sensor via the Calibration history display option.
Note
For calibration the membrane always has to be clean, for calibration in air it has to be dry. Clean contaminated sensors before calibration (see
LEANING THE SENSOR SHAFT AND MEMBRANE
).
During calibration the sensor is in the so-called maintenance condition.
This means all linked outputs retain their momentary state. After finishing calibration the maintenance condition has to be switched off manually. For more detailed information on the maintenance condition please refer to the respective IQ S
ENSOR
N
ET
system operating manual.
ba76047e01 01/2012
4 - 1
Measuring / Operation TriOxmatic
®
701 IQ
General course of a calibration on the
IQ S
ENSOR
N
ET
Generally, calibration on the IQ S
ENSOR
N
ET
is carried out as follows.
System specific details are given in the respective IQ S
ENSOR
N
ET system operating manual.
1 Switch to the measured value display with m
and select the sensor to be calibrated.
2 Call up calibration with c
.
The next step switches on the maintenance condition for the sensor. A corresponding note appears on the display.
3 Confirm the note with g
.
The maintenance condition is active.
The menu-guided calibration routine starts.
Follow the instructions on the display.
After the calibration routine is finished, the measured value display appears again (the measured value flashes because the sensor is still in the maintenance condition).
4 If the calibration was successful, bring the sensor into the measuring position.
5 Wait for a stable measured value.
6 Switch off the maintenance condition.
4.2.2
Calibration in water vapor-saturated air
1 If necessary, clean the sensor and membrane and dry the
2 Start calibration and follow the instruction on the display until the instruction Bring sensor into calibrating position appears.
Calibrating position
2 cm
4 - 2
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TriOxmatic
®
701 IQ Measuring / Operation
Possible results of the calibration
3 Bring the sensor into the calibrating position.
To do so, position the sensor approx. 2 cm above a water surface, best in a narrow bucket or similar container with water.
When doing so, no liquid should be brought on the membrane.
Note
Up to this point, you can break off the calibration procedure at any time with the e
key. The system continues to work with the old calibration data. However, you have to switch off the maintenance condition in any case.
After starting the calibration with the g
key (step 4), you cannot break off the calibration any more.
4 Continue with g
.
The calibration data is automatically determined and documented in the calibration record.
5 Complete the calibration procedure according to the instructions on the display.
Note
In the case of air temperatures under 5 °C do not calibrate the sensor in air but in air-saturated water that has a higher temperature. You obtain air-saturated water by pouring water several times in and out of two vessels so that it sparkles.
Then immerse the sensor in a vessel with air-saturated water and calibrate as described above.
The calibration data are evaluated by the system. A calibration can have the following results:
Display after the calibration
Log book entries
(meaning/actions)
Measured value display Sensor was successfully calibrated.
For the calibration data, see the calibration history.
"----" Sensor could not be calibrated.
Sensor blocked for measurement.
– Service the sensor immediately
(see operating manual).
– View calibration history.
– Check calibration conditions and calibration standard.
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4 - 3
Measuring / Operation TriOxmatic
®
701 IQ
4.2.3
Calibration history
Calibration history
(available in the
IQ S
ENSOR
N
ET system 2020 XT)
actual active calibration chronological list with the last calibrations
Reactivating the last valid calibration data
Fig. 4-1 Calibration history TriOxmatic
®
701 IQ
The calibration history contains the following information:
Date of the calibration
Relative Slope (dimensionless)
Rating of the calibration:
The new calibration values are used for the measurements.
– Error: Calibration was not successful.
The Sensor is blocked for measurement.
4.2.4
Reactivation of the last valid calibration
The TriOxmatic
®
701 IQ enables you to reactivate the last valid calibration when needed. Thereby, it is possible to continue with measurements, when a calibration failed or it is assumed that optimal calibration conditions were not met.
Note
The reactivation of former calibration data is only a temporary solution.
Please consider, that thereby possibly wrong measurement values are produced. Please check correct functioning of the sensor by performing a function check and/ or a user calibration.
1
Open the the setting table (see section 3.4).
2 Choose in the menue item Calibration the setting last valid and quit the setting table afterwards with Save and quit.
4 - 4
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TriOxmatic
®
701 IQ Measuring / Operation
Function check in water vapor-saturated air
4.3
Function check
The function check is the simplest way of letting you know whether the sensor needs to be cleaned and calibrated.
Note
The function check can either be performed in water vapor-saturated air or in air-saturated water.
In the case of air temperatures under 5 °C we recommend to perform the function check not in air but in air-saturated water that has a higher temperature.
Note
The function check is carried out in the measuring mode, % saturation.
When switching to the measuring mode % saturation, information on linked outputs is lost.
Proceed as follows:
1 Take the sensor out of the measuring solution and position it approx. 2 cm above a water surface, best in a narrow bucket or similar container with water. When doing so, no liquid should be brought on the membrane.
ba76047e01 01/2012
2 cm
2 Wait at least 15 minutes for the temperature to adapt.
3 In the sensor setting table, select the measuring mode %
(unit %) and switch to the measured value display with m
.
4 Read the measured value and determine whether it lies within the range of precision required by the user.
Note
If there are large temperature differences between the sample and the air above the surface of the water, a balancing period of more than
15 minutes may be required.
4 - 5
Measuring / Operation TriOxmatic
®
701 IQ
Measured values within the required precision
Function check in airsaturated water
If the measured value lies within the range of precision required by the user, no cleaning or recalibration is necessary.
Example:
Required precision 5 %.
Measured value in air: 97 % saturation (nominal value: 100%)
No cleaning or recalibration is necessary as the measurement error lies within the range of precision required by the user.
In the case of air temperatures under 5 °C do not perform the function check in air but in air-saturated water that has a higher temperature.
You obtain air-saturated water by pouring water several times in and out of two vessels so that it sparkles.
Then submerse the sensor in a vessel with air-saturated water and perform the function check as described above.
4 - 6
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TriOxmatic
®
701 IQ Maintenance, cleaning, disposal, and replacement
Maintenance condition
When to unscrew the sensor from the connection cable?
5 Maintenance, cleaning, disposal, and replacement
5.1
General maintenance instructions
Warning
Contact with the sample can lead to danger to the user!
Depending on the type of sample, suitable protective measures must be taken (protective clothing, protective goggles, etc.).
We recommend to switch on the maintenance condition each time before removing the sensor from its measuring position. This avoids unintended reactions of linked outputs. For more detailed information on the maintenance condition please refer to the respective
IQ S
ENSOR
N
ET
system operating manual.
To clean the outside of the sensor (section 5.2) and to replace the
electrolyte solution and membrane head (section 5.3), we recommend
to leave the sensor connected to the sensor connection cable.
Otherwise, moisture and/or dirt can get into the plug connection where they can cause contact problems. If you wish to disconnect the sensor from the sensor connection cable, note the points described below.
For the cleaning of the electrodes (section 5.4) the sensor must be
unscrewed from the sensor connection cable to prevent any damage.
Observe the following points for this:
Before disconnecting the sensor from the SACIQ sensor connection cable, remove any larger pieces of contamination from the sensor, particularly in the area of the plug connection (brush it off in a bucket of tap water, wash it off with a hose or wipe it off with a cloth).
Unscrew the sensor from the SACIQ sensor connection cable.
Place a protective cap on both the sensor plug head connector and on the SACIQ sensor connection cable so that no moisture or dirt can get into the contacting surfaces.
In corrosive environments close the dry socket of the sensor connection cable with the SACIQ-Plug protective screw cap in order to protect the electrical contacts from corrosion. The protective cap
is available as an accessory (see section 5.8 M
EQUIPMENT AND REPLACEMENT PARTS
Connect the sensor with the SACIQ sensor connection cable again before polarization.
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5 - 1
Maintenance, cleaning, disposal, and replacement TriOxmatic
®
701 IQ
5.2
Cleaning the sensor shaft and membrane
For normal operation (e.g. municipal wastewater), cleaning and calibration are strongly recommended:
if there is any pollution (according to visual check)
if the measured values are suspected of being incorrect (usually too low)
if the measured value lies outside the range of precision required by the user when the function check is carried out.
Cleaning agents
Contamination
For sludge and loosely adhering dirt, or biological deposits
Salt and / or lime deposits
Cleaning agents
Soft cloth or soft sponge, warm tap water with detergent
Acetic acid (volume percentage =
20 %), soft cloth or soft sponge
Cleaning
1 Pull the sensor out of the sample.
2 Get rid of any coarse contamination on the sensor (e.g. brush it off in a bucket of tap water, wash it down with a hose or wash it off with a cloth).
3 Unscrew the protective hood from the sensor.
5 - 2
Caution
Acetic acid irritates the eyes and the skin. When handling acetic acid, always wear protective gloves and protective goggles.
ba76047e01 01/2012
TriOxmatic
®
701 IQ Maintenance, cleaning, disposal, and replacement
Caution
Clean the membrane very carefully!
Make sure the membrane is not damaged, e.g. by sharp-edged objects, by laying it on sharp stones, etc.
4 Carefully clean the sensor shaft and the membrane as specified in the C
LEANING AGENTS
section.
5 Then, rinse it thoroughly with tap water.
6 Also clean and rinse the protective hood.
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5 - 3
Maintenance, cleaning, disposal, and replacement
7 Screw the protective hood back on again.
TriOxmatic
®
701 IQ
8 If necessary, carefully dry the membrane with a lint-free paper towel.
9
Recalibrate the sensor (see section 4.2 C
5 - 4
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TriOxmatic
®
701 IQ Maintenance, cleaning, disposal, and replacement
5.3
Changing the electrolyte and membrane cap
YSI delivers the sensor ready for operation. The electrolyte solution and the membrane head must only be replaced:
the membrane is heavily contaminated and a calibration error occurs
(log book message)
the membrane is damaged
(log book message)
the electrolyte solution is depleted or the counter electrode is poisoned
(log book message)
after the gold working electrode and the silver counter electrode have been cleaned
Note
Information on the contents and structure of the log book and how you can call it up is given in the L
OG BOOK
chapter of the IQ S
ENSOR
N
ET system operating manual.
Note
Only unscrew the membrane head for maintenance purposes. After doing so, always use a new membrane head!
Changing the electrolyte and membrane cap
1 Pull the sensor out of the sample.
2 Get rid of any coarse contamination on the sensor (e.g. brush it off in a bucket of tap water, wash it down with a hose or wash it off with a cloth).
3 Unscrew the protective hood from the sensor.
Caution
The ELY/A electrolyte solution irritates eyes, skin and mucus membranes. If it comes into contact with the eyes, rinse thoroughly with water and consult a doctor! During working activities, always wear suitable protective gloves and protective goggles/face shield! Follow the safety datasheet.
ba76047e01 01/2012
5 - 5
Maintenance, cleaning, disposal, and replacement TriOxmatic
®
701 IQ
4 Unscrew the membrane head (for disposal of the membrane
head and electrolyte solution, see section 5.7).
5 Rinse the sensor head with tap water.
6 Carefully rub the silver counter electrode with a paper towel and rinse it with deionized water.
5 - 6
ba76047e01 01/2012
TriOxmatic
®
701 IQ Maintenance, cleaning, disposal, and replacement
7 Thoroughly rinse the sensor head with electrolyte solution.
8 Fill a new WP 25i membrane cap with ELY/A electrolyte solution
AINTENANCE EQUIPMENT AND REPLACEMENT
).
9 Throw away the first filling and fill the membrane head once more with electrolyte solution.
ba76047e01 01/2012
5 - 7
Maintenance, cleaning, disposal, and replacement TriOxmatic
®
701 IQ
10 Remove any air bubbles by carefully tapping the membrane head.
5 - 8
Caution
The ELY/A electrolyte solution irritates eyes, skin and mucus membranes. If it comes into contact with the eyes, rinse thoroughly with water and consult a doctor! During working activities, always wear suitable protective gloves and protective goggles/face shield! Follow the safety datasheet.
11 Screw the membrane head onto the shaft while holding the sensor at an angle. Excess electrolyte solution is forced out of the ventilation area.
Ventilation area (see above)
12 The filling should be free of air bubbles as far as possible.
However, small air bubbles do not cause any interference.
13 After approx. 60 minutes polarization time, the sensor is ready for operation.
14
Recalibrate the sensor (see section 4.2 C
ba76047e01 01/2012
TriOxmatic
®
701 IQ Maintenance, cleaning, disposal, and replacement
Precision measurements
Recommendation: In order to carry out precision measurements, leave the sensor to polarize for a longer period of time, e.g. overnight, and recalibrate it the following day.
Note
In the following cases, you must refill the sensor once more:
if there are large air bubbles
if there are air bubbles on the gold working electrode
for measurements at high water pressure, even if small air bubbles are present. Otherwise, the membrane and, as a result, the measuring characteristics could change.
if the sensor cannot be calibrated.
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5 - 9
Maintenance, cleaning, disposal, and replacement TriOxmatic
®
701 IQ
Preparatory activities
5.4
Cleaning the electrodes
The counter electrode and reference electrode always exhibit a distinct coloration. This is necessary for the operation of the sensor. This is not contamination. Cleaning is only required in cases of slopes that are too small or too large (the sensor cannot then be calibrated) that cannot be resolved by changing the membrane head and the electrolyte solution.
Caution
To clean the electrodes, always unscrew the sensor from the
SACIQ sensor connection cable. Otherwise, undesirable electrochemical reactions can occur that may lead to the destruction of the sensor.
1 Pull the sensor out of the sample and remove any coarse contamination from the sensor (e.g. brush it off in a bucket of tap water, wash it down with a hose or wash it off with a cloth).
2 Unscrew the sensor from the SACIQ (SW) sensor connection
ENERAL MAINTENANCE INSTRUCTIONS
).
3 Unscrew the protective hood from the sensor.
5 - 10
ba76047e01 01/2012
TriOxmatic
®
701 IQ Maintenance, cleaning, disposal, and replacement
Caution
The ELY/A electrolyte solution irritates eyes, skin and mucus membranes. If it comes into contact with the eyes, rinse thoroughly with water and consult a doctor! During working activities, always wear suitable protective gloves and protective goggles/face shield! Follow the safety datasheet.
4 Unscrew the membrane head (for disposal of the membrane
head and electrolyte solution, see section 5.7).
5 Rinse the sensor head with tap water.
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Maintenance, cleaning, disposal, and replacement TriOxmatic
®
701 IQ
5.4.1
Cleaning the gold working electrode
1 Moisten the gold working electrode and the SF 300 polishing
) with deionized water.
2 Using the rough side of the wet SF 300 polishing strip, polish off any contamination from the gold working electrode using light pressure.
Caution
Do not use any conventional sandpaper or glass-fiber brushes.
They could damage the electrode.
3 Rinse the sensor head with deionized water.
5 - 12
Note
Cleaning the gold working electrode may already be sufficient to enable the sensor to be calibrated again. For safety, however, we recommend
to also clean the silver counter electrode (see section 5.4.2) and to use
a new membrane cap afterwards.
ba76047e01 01/2012
TriOxmatic
®
701 IQ Maintenance, cleaning, disposal, and replacement
Cleaning the silver counter electrode with the RA 600 cleaning attachment
5.4.2
Cleaning the silver counter electrode
We recommend to clean the silver counter electrode with the RA 600
cleaning attachment that is available as an accessory (see section
AINTENANCE EQUIPMENT AND REPLACEMENT PARTS
). This avoids the reference electrode coming into contact with the cleaning solution.
However, it is also possible to clean the silver counter electrode in a beaker.
Caution
The reference electrode must not come into contact with the cleaning solution under any circumstances. This could destroy the reference electrode and cause the sensor to become defective. However, no danger can arise if the RA 600 is used correctly.
1 Wipe the silver counter electrode with a lint-free paper towel and carefully remove any loose deposits.
2 Screw the cleaning attachment onto the sensor, instead of the membrane head.
ba76047e01 01/2012
Caution
Never grease or lubricate the inner O-ring in the RA 600 cleaning attachment!
5 - 13
Maintenance, cleaning, disposal, and replacement TriOxmatic
®
701 IQ
3 Remove the screw cap from the safety cap of the cleaning attachment.
4 Fill the screw cap with RL-AG/Oxi cleaning solution (see
AINTENANCE EQUIPMENT AND REPLACEMENT
5 Screw the sensor with the safety cap onto the screw cap.
5 - 14
6 Leave the cleaning solution to take effect for a maximum of 1 hour.
ba76047e01 01/2012
TriOxmatic
®
701 IQ Maintenance, cleaning, disposal, and replacement
7 Unscrew the screw cap.
8 Thoroughly rinse the electrode unit with the safety cap on it with deionized water.
9 Unscrew the safety cap.
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5 - 15
Maintenance, cleaning, disposal, and replacement TriOxmatic
®
701 IQ
10 Rinse the sensor head and electrode unit several times with deionized water.
11 Rinse the sensor head and electrode unit for at least an hour in deionized water.
12 Carefully shake off the drops of water.
5 - 16
13
Fill a new WP 25i membrane cap and screw it on (see section
HANGING THE ELECTROLYTE AND MEMBRANE CAP
).
14 Connect the sensor again with the SACIQ sensor connection cable.
ba76047e01 01/2012
TriOxmatic
®
701 IQ Maintenance, cleaning, disposal, and replacement
15 After approx. 60 minutes, the sensor is ready for operation.
16
Recalibrate the sensor (see section 4.2 C
Cleaning the silver counter electrode in a beaker
1 Wipe the silver counter electrode with a lint-free paper towel and carefully remove any loose deposits.
2 Fill a beaker (150 ml, high-sided form) with approx. 25 ml RL-
AG/Oxi cleaning solution.
Caution
The reference electrode must not come into contact with the cleaning solution under any circumstances. This could destroy the reference electrode and cause the sensor to become defective.
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5 - 17
Maintenance, cleaning, disposal, and replacement TriOxmatic
®
701 IQ
3 Clamp the sensor in a stand.
Submerse the electrode unit in the RL-AG/Oxi cleaning solution to just above the silver counter electrode.
4 Leave the cleaning solution to work for 1 hour.
5 Rinse the sensor head and electrode unit several times with deionized water.
6 Rinse the sensor head and electrode unit for at least an hour in deionized water.
5 - 18
ba76047e01 01/2012
TriOxmatic
®
701 IQ Maintenance, cleaning, disposal, and replacement
7 Carefully shake off the drops of water.
8
Fill a new WP 25i membrane cap and screw it on (see section
HANGING THE ELECTROLYTE AND MEMBRANE CAP
9 Connect the sensor again with the SACIQ sensor connection cable.
10 After approx. 60 minutes polarization time, the sensor is ready for operation.
11
Recalibrate the sensor (see section 4.2 C
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5 - 19
Maintenance, cleaning, disposal, and replacement TriOxmatic
®
701 IQ
Test solution
5.5
Checking the sensor for freedom from zero-current
The sensor is zero-current free. Therefore, no calibration of the sensor in an oxygen-free solution is included.
However, it is possible to check the freedom from zero-current according to DIN EN 25814/ISO 5814. This is advisable if there is any suspicion of a malfunction.
1 g/l aqueous sodium sulfite solution, Na
2
SO
3
(addition of 1 mg/l of a cobalt(II) salt accelerates the removal of oxygen from the solution.)
The sensor should be in operation for at least 1 hour before the inspection.
Test procedure
1
Clean the sensor (see section 5.2 C
).
2 In the sensor setting table, select the measuring mode %
(unit %) and switch to the measured value display with m
.
3 Submerse the sensor in the test solution.
4 Leave the sensor in the test solution for an hour.
5 Read the measured value.
Evaluation
The sensor is OK if the terminal shows < 1 % oxygen saturation.
If the measured value is > 1 %:
Clean the gold working electrode (see section 5.4.1 C
) and change the electrolyte and
membrane cap (see section 5.3 C
If necessary, also clean the silver counter electrode (see section
LEANING THE SILVER COUNTER ELECTRODE
).
5 - 20
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TriOxmatic
®
701 IQ Maintenance, cleaning, disposal, and replacement
5.6
Storage
Store the clean and dry sensor with its protective cap in place. Observe
the allowed temperature range (see chapter 7 T
); the sensor may be stored in any position.
Disposal of the membrane cap
5.7
Disposal
We recommend disposing of the sensor without the membrane head as electronic refuse.
Caution
The ELY/A electrolyte solution irritates eyes, skin and mucus membranes. If it comes into contact with the eyes, rinse thoroughly with water and consult a doctor! During working activities, always wear suitable protective gloves and protective goggles/face shield! Follow the safety datasheet.
1 Before disposing of the membrane head, unscrew it and rinse with water.
2 Dispose of the membrane head in the household refuse.
Note
To dispose of the chemicals, follow the corresponding safety datasheets. The safety datasheets can be obtained from YSI.
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Maintenance, cleaning, disposal, and replacement TriOxmatic
®
701 IQ
5.8
Maintenance equipment and replacement parts
Description
Accessory case (2 replacement membrane heads, 50 ml electrolyte solution, 50 ml cleaning solution, polishing film)
Model
ZBK 25i
Replacement membrane heads
(2 pieces)
WP 25i/2
Electrolyte solution (1 bottle x 50 ml) ELY/A
Order no.
202 621Y
202 852Y
Cleaning solution for silver counter electrode (1 bottle of 50 ml)
Polishing film
Cleaning attachment for cleaning the counter electrode
Protective screw cap for sensor connection cable
RL-Ag/Oxi
SF 300
RA 600
205 212Y
205 200Y
203 680Y
202 510Y
SACIQ-Plug 480 065Y
Note
Information on other IQ S
ENSOR
N
ET
accessories is given in the YSI catalog and on the Internet.
5 - 22
ba76047e01 01/2012
TriOxmatic
®
701 IQ What to do if...
6 What to do if...
The sensor is in the air and the display shows
0.0 mg/l or 0 % O
2
The sensor cannot be calibrated
If the sensor still cannot be calibrated after changing the electrolyte and membrane cap
Mechanical damage to the sensor
Measured values too low
Measured value fluctuating heavily
Cause
– No electrolyte in the membrane head
Remedy
– Change the WP 25i membrane head (see
Cause Remedy
– Contaminated membrane head – Clean the outside of the sensor (according to operating manual), wait at least 15 minutes and recalibrate it.
– In the case of contamination that cannot be removed:
Change the membrane head and electrolyte
Cause
– Contaminated electrodes or sensor toxification
Cause
Remedy
– Clean the electrodes (see
Remedy
– Return the sensor
Cause
– Membrane contaminated
– Sensor has not been calibrated for a long time
– Membrane does not fit snugly on the gold working electrode
Remedy
– Clean the outside of the sensor, then recalibrate (see
– Change the membrane cap,
Cause
– Membrane cap loose
– Membrane does not fit snugly on the gold working electrode
Remedy
– Screw the membrane head tight
– Change the membrane cap,
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6 - 1
What to do if...
TriOxmatic
®
701 IQ
Measured values too high
Incorrect temperature display
Cause
– Sensor not yet completely polarized
– Sensor has not been calibrated for a long time
Remedy
– Wait for complete polarization (at least 1 hour)
– Clean the outside of the sensor, then recalibrate
Cause
– Temperature sensor defective
Remedy
– Return the sensor
6 - 2
ba76047e01 01/2012
TriOxmatic
®
701 IQ Technical data
Measuring principle
Electrolyte
Measuring ranges and resolutions
Temperature compensation
Measurement in water
Measurement in saltcontaminated wastewater
Polarization time
Temperature measurement
Calibration procedure
7 Technical data
7.1
Measurement characteristics
Membrane-covered amperometric sensor with potentiostatically operated 3-electrode system;
Integrated microprocessor electronics, shielded 2-wire connection for power and data transmission.
ELY/A
Measuring mode
D. O. concentration
Measuring range
0.00 ... 20.00 mg/l
0.0 ... 60.0 mg/l
D. O. saturation 0.0 ... 200.0 %
(
0 ... 600 %
≈
0 ... 1200 mbar pO
2
)
Resolution
0.01 mg/l
0.1 mg/l
0.1 %
1 %
IMT (integrated membrane temperature compensation)
According to solubility function DIN 408 / Part 22
Salinity input from 2.0 ... 70.0; corresponds to 3.4 mS/cm ... 86.2 mS/cm at T
REF
20 °C
(salinity measurement in the range 2 ... 42 according to IOT =
International Oceanographic Tables)
In the case of re-commissioning or change of electrolyte
In the case of short polarization interruptions (depending on the duration of the interruption)
At least 60 minutes
15 to 60 minutes
Temperature sensor
Measuring range
Accuracy
Resolution
Air calibration integrated NTC
- 5 °C ... + 60 °C (23 ... 140 °F)
± 0.5 K
0.1 K ba76047e01 01/2012
7 - 1
Technical data TriOxmatic
®
701 IQ
Air pressure compensation
Automatic
Manual
With IQ S
ENSOR
N
ET
systems with air pressure measurement
(option)
By entering the air pressure or location altitude
Allowed temperature range
7.2
Application characteristics
Measuring medium
Storage/transport
4 ... 12
0 °C ... + 60 °C (32 ... 140 °F)
- 5 °C ... + 65 °C (23 ... 149 °F)
Allowed pH range of the test sample
Pressure resistance
Type of protection
Immersion depth
Operating position
Approach flow
Fields of application
Sensor with connected SACIQ sensor connection cable:
Max. allowed overpressure 10
6
Pa (10 bar)
The sensor meets all requirements according to article 3(3) of 97/23/
EC ("pressure equipment directive").
Sensor with connected SACIQ sensor connection cable:
IP 68, 10 bar (10
6
Pa) min. 10 cm; max. 100 m depth
Any, if the minimum approach flow is guaranteed
≥
23 cm/s (at 1 % measurement accuracy)
Water and wastewater monitoring
Measurement of the residual oxygen in the denitrification process
Oxygen entry measurements
7 - 2
ba76047e01 01/2012
TriOxmatic
®
701 IQ
Dimensions
7.3
General data
360
Technical data
Weight (without sensor connection cable)
Connection technique
Material
38 approx. 660 g
40.0
Connection via SACIQ sensor connection cable
Shaft
Membrane head
Membrane
Sensor head
Insulator
Plug head connector housing
Plug, 3-pole
Protective hood
Socket SACIQ...
V4A stainless steel 1.4571
POM
FEP (thickness 25
μ
m)
POM
PEEK
POM
ETFE (blue) Tefzel
®
POM
Automatic sensor monitoring
(SensCheck function)
Instrument safety
SensReg (electrolyte solution depleted)
SensLeck (membrane cap leaking)
Applicable norms – EN 61010-1
– UL 3111-1
– CAN/CSA C22.2 No. 1010.1
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7 - 3
Technical data TriOxmatic
®
701 IQ
7.4
Electrical data
Nominal voltage
Power consumption
Protective class
Max. 24VDC via the IQ S
ENSOR
N
ET
(for more details, see chapter T
ECHNICAL
DATA
of the IQ S
ENSOR
N
ET system operating manual)
0.2 W
III
Zero signal
Response time at 25 °C
Own consumption
Drift
Working life per electrolyte filling
7.5
Characteristic data on delivery
< 0.05 % of the saturation value t
90
(90 % of the final value display after) < 30 s t
99
(99 % of the final value display after) < 90 s
0.027 µg h
-1
(mg/l)
-1
at 20 °C
< 3 % per month during permanent polarization
Oxygen concentration
Air saturation
< 2 mg/l
Theoretical electrolyte reserve
approx. 1.5 years approx. 7.5 years
7 - 4
ba76047e01 01/2012
TriOxmatic
®
701 IQ Contact Information
8 Contact Information
8.1
Ordering & Technical Support
Telephone:
Fax:
Email:
Mail:
Internet:
(800) 897-4151
(937) 767-7241
Monday through Friday, 8:00 AM to 5:00 PM ET
(937) 767-1058 [email protected]
YSI Incorporated
1725 Brannum Lane
Yellow Springs, OH 45387
USA www.ysi.com
When placing an order please have the following information available:
YSI account number (if available) Name and Phone Number
Model number or brief description Billing and shipping address
Quantity Purchase Order or Credit Card
8.2
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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8 - 1
Contact Information TriOxmatic
®
701 IQ
8 - 2
ba76047e01 01/2012
TriOxmatic
®
701 IQ
Message code
EA1332
EA2332
EA3332
EC4332
EC5332
Indexes
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 S
ENSOR
N
ET system for the TriOxmatic
®
701 IQ sensor.
Note
Information on the contents and structure of the log book, and how to call it up, is given in the L
OG BOOK
chapter of the IQ S
ENSOR
N
ET system operating manual.
Note
All message codes of the TriOxmatic
®
701 IQ end up with "332".
9.1.1
Error messages
Message text
Meas. range exceeded or undercut
* Check process
* Select other meas. range
Sensor temperature too high!
* Check process and application
Sensor temperature too low!
* Check process and application
Sensor could not be calibrated, sensor blocked for measurement
Cause: instable signal
* Check polarization time and temperature adjustment
* Check calibration conditions
* Read calibration history
* Repeat calibration, if unsuccessful: service the sensor (see operating manual)
Sensor could not be calibrated, sensor blocked for measurement
Cause: slope error
* Check polarization time and temperature adjustment
* Check calibration conditions
* Read calibration history
* Repeat calibration, if unsuccessful: service the sensor (see operating manual)
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9 - 1
Indexes
Message code
EI1332
EI2332
ES1332
ESB332
ESC332
Message code
IC1332
IC4332
II1332
TriOxmatic
®
701 IQ
Message text
Operational voltage too low
* Check installation and cable lengths, Follow installation instructions
* Power unit(s) overloaded, add power unit(s)
* Check terminal and module connections
* Defective components, replace components
Operational voltage too low, no operation possible
* Check installation and cable lengths, Follow installation instructions
* Power unit(s) overloaded, add power unit(s)
* Check terminal and module connections
* Defective components, replace components
Component hardware defective
* Contact service
SensReg: Electrolyte supply is depleted
* Change electrolyte solution and membrane head immediately (see operating manual)
SensLeck: Membrane head damaged
* Change electrolyte solution and membrane head immediately (see operating manual)
9.1.2
Info messages
Message text
Sensor has been successfully calibrated
* For calibration data, see calibration history
Last valid calibration has been activated. Make sure the sensor operates correctly.
Language not available,
Default language German
* Contact service
9 - 2
ba76047e01 01/2012
TriOxmatic
®
701 IQ Indexes
Status info, general structure
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 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 Einstellungen/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)
– from the IQ Data Server (see IQ S
ENSOR
N
ET
Software Pack operating manual)
Note
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
TriOxmatic
®
701 IQ
Status bit
Bit 0
Bit 1
Bit 2
Bit 3-31
-
Explanation
Component hardware defective
SensReg: Electrolyte supply is depleted
SensLeck: Membrane head damaged
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9 - 3
Indexes TriOxmatic
®
701 IQ
9 - 4
ba76047e01 01/2012
1725 Brannum Lane
Yellow Springs, Ohio 45387 USA
+1 937-767-7241
800-765-4974 (US)
FAX (937) 767-
1058
Email: [email protected]
Internet: www.ysi.com
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Table of contents
- 17 Overview
- 17 How to use this component operating manual
- 17 701 IQ D.O. sensor
- 17 Recommended fields of application
- 18 Safety
- 18 Authorized use
- 18 General safety instructions
- 19 Commissioning
- 19 Scope of delivery
- 19 Installation
- 19 701 IQ setting table
- 20 Measuring / Operation
- 20 Measuring
- 20 Calibration
- 20 General information on calibration
- 20 Calibration in water vapor-saturated air
- 20 Calibration history
- 20 Reactivation of the last valid calibration
- 20 Function check
- 21 Maintenance, cleaning, disposal, and replacement
- 21 General maintenance instructions
- 21 Cleaning the sensor shaft and membrane
- 21 Changing the electrolyte and membrane cap
- 21 Cleaning the electrodes
- 21 Cleaning the gold working electrode
- 21 Cleaning the silver counter electrode
- 21 Checking the sensor for freedom from zero-current
- 21 Storage
- 21 Disposal
- 21 Maintenance equipment and replacement parts
- 22 What to do if