DOC023.98.80088
Chlorine Sensor
02/2018, Edition 9
Bedienungsanleitung
Manuel de l’utilisateur
Manual do utilizador
Gebruikershandleiding
Ръководство за потребителя
Felhasználói kézikönyv
Руководство пользователя
Navodila za uporabo
Korisnički priručnik
User Manual
Manuale utente
Manual del usuario
Návod k použití
Brugervejledning
Instrukcja obsługi
Bruksanvisning
Manual de utilizare
Kullanıcı Kılavuzu
Návod na použitie
Εγχειρίδιο χρήσης
English...................................................................................................................................................................................................3
Deutsch...............................................................................................................................................................................................23
Italiano................................................................................................................................................................................................. 46
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2
Table of contents
Specifications on page 3 Maintenance on page 16
General information on page 4 Troubleshooting on page 20
Installation on page 6 Replacement parts on page 22
Operation on page 10
Specifications
Specifications are subject to change without notice.
Specification Details
Measurement range 0 to 20 ppm
Lower limit of detection 30 ppb (0.030 ppm)
Resolution 0.001 ppm (1 ppb)
pH operating range 4 to 9 pH units
Accuracy
(chlorine concentrations
within ±2 ppm or 20%
(whichever is smaller) of the
calibrated point)
Free chlorine (0 to 10 ppm):
• ± 3% of the reference test2 (DPD) at constant
• ± 10% of the reference test2 (DPD) at stable
Total chlorine (0 to 10 ppm):
• ± 10% of the reference test2 (DPD) at stable
• ± 20% of the reference test2 (DPD) at pH
1
pH less than 7.2 (±0.2 pH unit)
pH less than 8.5 (±0.5 pH unit from the pH at
chlorine calibration)
pH less than 8.5 (±0.5 pH unit from the pH at
chlorine calibration)
greater than 8.5
Specification Details
Repeatability 30 ppb or 3%, whichever is greater
Response time Free chlorine: 140 seconds for 90% change (T90)
Sampling time Continuous
Interferences Free chlorine: Monochloramine, chlorine dioxide,
Pressure limit 0.5 bar, no pressure impulses and/or vibrations
Flow rate 30 to 50 L/hour (7.9 to 13.2 gal/hour)
Power requirements 12 VDC, 30 mA maximum (supplied by controller)
Operating temperature 5 to 45 °C (41 to 113 °F)
Storage temperature Sensor: 0 to 50 °C (32 to 122 °F) dry without
Dimensions
(length/diameter)
Cable length/type 1 m
Cable connection 5 pin, M12 connector
Measurement method Reagentless, electrochemical, amperometric,
Calibration methods 1-point or 2-point (zero and slope) calibration
Temperature compensation Internal temperature sensor
at a stable temperature and pH
Total chlorine: 100 seconds for 90% change (T90)
at a stable temperature and pH
ozone and chalk deposits
Total chlorine: Chlorine dioxide, ozone and chalk
deposits
40 L/hour (10.5 gal/hour) – optimal
electrolyte
Electrolyte: 15 to 25 °C (59 to 77 °F)
195 mm (7.68 in.)/25 mm (0.98 in.)
three-electrode system
1
The chlorine sensors are not applicable for applications with consistently low (< 0.1 ppm) or zero chlorine concentrations.
2
The test must be conducted at the analyzer sampling point.
English 3
Specification Details
Material Corrosion-resistant materials (stainless steel,
Warranty 1 year warranty on the electrode body, includes
PVC, silicon rubber and polycarbonate)
the electronics (EU: 2 years)
General information
In no event will the manufacturer be liable for direct, indirect, special,
incidental or consequential damages resulting from any defect or
omission in this manual. The manufacturer reserves the right to make
changes in this manual and the products it describes at any time, without
notice or obligation. Revised editions are found on the manufacturer’s
website.
Safety information
N O T I CE
The manufacturer is not responsible for any damages due to misapplication or
misuse of this product including, without limitation, direct, incidental and
consequential damages, and disclaims such damages to the full extent permitted
under applicable law. The user is solely responsible to identify critical application
risks and install appropriate mechanisms to protect processes during a possible
equipment malfunction.
Please read this entire manual before unpacking, setting up or operating
this equipment. Pay attention to all danger and caution statements.
Failure to do so could result in serious injury to the operator or damage
to the equipment.
Make sure that the protection provided by this equipment is not impaired.
Do not use or install this equipment in any manner other than that
specified in this manual.
Use of hazard information
Indicates a potentially or imminently hazardous situation which, if not avoided, will
result in death or serious injury.
D A N G ER
W A R N IN G
Indicates a potentially or imminently hazardous situation which, if not avoided,
could result in death or serious injury.
Indicates a potentially hazardous situation that may result in minor or moderate
injury.
Indicates a situation which, if not avoided, may cause damage to the instrument.
Information that requires special emphasis.
C A U T IO N
N O T I CE
Precautionary labels
Read all labels and tags attached to the instrument. Personal injury or
damage to the instrument could occur if not observed. A symbol on the
instrument is referenced in the manual with a precautionary statement.
This is the safety alert symbol. Obey all safety messages that follow
this symbol to avoid potential injury. If on the instrument, refer to the
instruction manual for operation or safety information.
This symbol indicates that a risk of electrical shock and/or
electrocution exists.
This symbol indicates the presence of devices sensitive to Electrostatic Discharge (ESD) and indicates that care must be taken to
prevent damage with the equipment.
Electrical equipment marked with this symbol may not be disposed of
in European domestic or public disposal systems. Return old or endof-life equipment to the manufacturer for disposal at no charge to the
user.
Product overview
The free chlorine sensor and total chlorine sensor are reagentless,
electrochemical sensors that continuously measure the chlorine
4
English
concentration in water. The free chlorine sensor measures the
concentration of free chlorine (generated from inorganic chlorine
products) in water. The total chlorine sensor measures the concentration
of total chlorine (free chlorine and combined chlorine) in water.
Variations in the pH value have an affect on the accuracy of the chlorine
measurement. The chlorine value shown on the controller usually
decreases at about 10% per pH unit increase.
This sensor has an internal temperature sensor that increases the
accuracy of chlorine measurement. The temperature measurement
signal is used internally by the sensor for automatic temperature
compensation. The temperature measurement signalis not shown on the
controller.
This sensor is designed to work with the digital gateway for the CLF10sc
and CLT10sc Reagentless Chlorine Analyzer and one of the sc series
controllers for data collection and operation.
Figure 1 shows the free chlorine sensor and total chlorine sensor.
Figure 1 Sensor overview
1 Electrode of the free chlorine
sensor
2 Membrane cap 5 Rubber band
3 Membrane 6 Electrode of the total chlorine
4 Vent hole in membrane cap
sensor
Sensor LEDs
The green LED and orange LED located inside the transparent area of
the chlorine sensor indicate the conditions of the power supply, sensor
signal polarity and electrochemical cell.
English
5
LED color Condition Description
Green On (steady) The processor is working correctly.
Off or On
(flashing)
Orange Off The sensor is working correctly.
On (steady) The internal signal from the working electrode
On (flashing) The level of chlorine concentration is too high.
The voltage is too low which has caused a
malfunction of the processor.
has the wrong polarity.
If the LED is on for longer than 30 minutes, do
sensor maintenance.
Reduce the chlorine concentration.
Theory of operation
This sensor is a potentiostatic three-electrode instrument, with a
specially placed counter electrode. The measuring (working) electrode is
membrane covered and is in the electrolyte together with the reference
electrode. This electrode area contains a special electrolyte and is
separated from the measured sample by the membrane.
The sensor uses an amperometric method to measure chlorine
concentration in water. Chlorine species in the measured sample pass
through the membrane and react with the working electrode. This
reaction produces an electrical current proportional to the chlorine
concentration. The electrical signal is amplified by the sensor electronics
and is transmitted to the instrument in voltage format (mV). The third
electrode (auxiliary or counter electrode) is put in the measured sample
and is used to maintain a constant working potential on the working
electrode. The working potential is controlled by the reference electrode.
This configuration increases measurement stability.
The highly-buffered electrolyte inside the membrane cap supplies
internal compensation for pH fluctuations in the measured sample. The
buffer helps to immediately change hypochlorite ions permeating the
membrane into hypochlorous acid molecules. The electrolyte makes the
measurement almost independent of the pH of the measured sample.
The chlorine readings are independent from the temperature of the
measured water due to internal temperature compensation.
Product components
Refer to Figure 2 to make sure that all components have been received.
If any of these items are missing or damaged, contact the manufacturer
or a sales representative immediately.
Figure 2 Sensor components
1 Chlorine sensor 4 Split ring
2 Special abrasive paper 5 Electrolyte
3 Split ring O-ring
Installation
C A U T IO N
Multiple hazards. Only qualified personnel must conduct the tasks
described in this section of the document.
6 English
Sensor assembly
C A U T IO N
The electrolyte contains potassium halide and buffer to adjust acidity. Read the
MSDS sheet before opening the electrolyte bottle.
The sensor must be assembled before it can be installed in the chlorine
flow cell. Assembly consists of removing the membrane cap, filling the
membrane cap with electrolyte and putting the membrane cap on to the
electrode shaft.
Before assembling the sensor, read these precautions:
• Do not touch the electrodes and keep the electrodes clean. Do not
remove the layer on the electrodes.
• Lift up the rubber band that covers the vent hole marked “M48” on the
membrane cap before removing the membrane cap. The vent allows
air to come into the membrane cap. The membrane will be destroyed
if the vent is covered when the membrane cap is removed, because
vacuum will build up in the membrane cap.
• Do not remove the metallic membrane holder from the cap as this will
damage the membrane.
• Always put the membrane cap on a clean, non-absorbent surface.
• Do not shake the electrolyte bottle as shaking the bottle creates
bubbles. After the electrolyte bottle is opened, store the bottle up side
down.
• Make sure that there are as few bubbles in the electrolyte as possible
when filling the membrane cap with electrolyte. Too many bubbles will
decrease sensor performance.
• Do not close the vent hole marked "M48" in the membrane cap with
your finger when the membrane cap is put on to prevent excess
electrolyte from escaping through the vent. The membrane will be
damaged if the excess electrolyte can not escape. Gently clean off
any electrolyte on the outside of the sensor with a clean, dry cloth or
paper. Make sure not to touch the membrane.
• Make sure the membrane cap is completely put on up to the stop. The
first resistance comes from the O-ring seal, but continue to put on the
cap until the cap hits the electrode shaft.
Assemble the chlorine sensor
English 7
8 English
Install the sensor
The sensor must be installed in the flow cell, connected to the gateway,
conditioned and then calibrated before initial use and after maintenance
is done on the sensor. To install and connect the sensor, refer to the
illustrated steps.
To condition the sensor, operate the sensor for 6 to 12 hours until the
sensor readings stabilize. Refer to Diagnostic and test menu
on page 20 for information about viewing sensor readings.
Note: The controller and the sensor connected to it must remain in operation
continuously to maintain calibration.
English 9
Operation
Guidelines for operation
• This sensor is most reliable at residual chlorine concentrations more
than 0.1 ppm (mg/L). A build-up of sediments/contaminates (e.g.,
biological) on the membrane can interfere or prevent later chlorine
measurements.
• This sensor must not be operated in chlorine free water for more than
one day.
• This sensor must not be exposed to pressure impulses and/or
vibrations from the sample water.
User navigation
Refer to the controller documentation for keypad description and
navigation information.
Configure the sensor
Use the Configure menu to enter identification information and display
options for the sensor and to change options for data handling and
storage.
1. Push the MENU key and select Sensor Setup, Configure.
Option Description
EDIT NAME Changes the name that corresponds to the sensor on the
top of the measure screen. The name is limited to
10 characters in any combination of letters, numbers,
spaces or punctuation. The default name is the serial
number of the sensor.
10 English
Option Description
SELECT
PARAM.
RESET
DEFAULTS
Customizes the options for sensor data handling and
storage. Refer to Select the parameters on page 11.
Sets the configuration menu to the default settings. All
sensor information is lost.
Select the parameters
1. Select the type of chlorine sensor used - Total CL2 or Free CL2.
2. Select whether a pH sensor is used - Yes or No.
3. If Yes, select the type of pH sensor used - DIFF PH (pHD) or
COMBO pH (pH combination) and then Chlorine.
4. Customize the sensor parameters:
Option Description
SELECT
UNITS
DISPLAY
FORMAT
SELECT
RANGE
CAL WATCH Shown if pH sensor is used-refer to Select the Cal Watch
FILTER Sets a time constant to increase signal stability. The time
LOG SETUP Sets the time interval for event and data logging for
Sets the units for the sensor measurements-Auto ppb-ppm,
Auto ug/L-mg/L, Fixed ppm or Fixed mg/L.
Sets the number of decimal places that are shown on the
measure screen-X.XXX, XX.XX (default), XXX.X or XXXX
(Auto).
Sets the measurement range-0 to 10 ppm.
alarm values on page 11.
constant calculates the average value during a specified
time-0 (filtering disabled) to 60 seconds (average of signal
value for 60 seconds). The filter increases the time for the
sensor signal to respond to changes in the process.
chlorine concentration and flow status-10, 30 seconds, 1,5,
15 (default), 60 minutes.
Select the Cal Watch alarm values
The Cal Watch menu is used to:
• Set the error and warning alarm conditions for chlorine and/or pH
measurement deviations.
• Set the amount of time a chlorine and/or pH measurement can be
outside the deviation range before an alarm occurs.
• Set the amount of time a chlorine measurement can be 0.5 ppm or
higher before an alarm occurs if the previous chlorine sensor
calibration was done using a process flow with a low chlorine
concentration (LCC) (< 0.5 ppm).
• Set the amount of time a Cal Watch alarm is on before it is canceled
by the instrument if measurements go back in to range.
• Set the percentage rate at which measurements must be outside the
deviation range before an alarm occurs and must be back in range
before an alarm is canceled by the instrument.
To select Cal Watch alarm values:
1. Select Cal Monitor.
2. If the passcode is enabled in the security menu for the controller,
enter the passcode.
3. Select the measurement(s) to monitor (choose one):
Option Description
ALL Enables an error or warning alarm to activate when chlorine
and/or pH measurement deviations occur that are equal to or
higher than the chlorine and pH deviation values selected by
the user.
CL2 ONLY Enables an error or warning alarm to activate when a chlorine
measurement deviation occurs that is equal to or higher than
the chlorine measurement deviation values selected by the
user.
pH ONLY Enables an error or warning alarm to activate when a pH
measurement deviation occurs that is equal to or higher than
the pH measurement deviation values selected by the user.
None Disables all Cal Watch alarms.
English 11
4. Push the ENTER key and select Activate TMR.
5. Set the amount of time a measurement(s) can be outside the
deviation range before an alarm occurs:
Option Description
ALL ACTIVATE TMR: Sets the amount of time the chlorine AND pH
CL2/pH
ONLY
LCC ACTIVATE TMR: Set the amount of time a chlorine measurement
measurements can be out of range before an alarm occurs-10 to
99 minutes (10 minutes default).
CONFID LEVEL: Set the percentage rate at which chlorine AND
pH measurements must be out of range before an alarm occurs
and must be in range before an alarm is automatically canceled
by the instrument-50 to 95% (default).
ACTIVATE TMR: Sets the amount of time the chlorine OR pH
measurements can be out of range before an alarm occurs-10 to
999 minutes (30 minutes default).
CONFID LEVEL: Set the percentage rate at which chlorine OR
pH measurements must be out of range before an alarm occurs
and must be in range before an alarm is automatically canceled
by the instrument-50 to 95% (default).
can be 0.5 ppm or higher before an alarm occurs-10 to
999 minutes (30 minutes default). An alarm only occurs if the
previous chlorine sensor calibration was done using a process
flow with a low chlorine concentration (LCC) (< 0.5 ppm).
CONFID LEVEL: Set the percentage rate at which chlorine
measurements must be 0.5 ppm or higher before an alarm
occurs and must be less than 0.5 ppm before an alarm is
automatically canceled by the instrument-50 to 95% (default).
6. Push the ENTER key and select Deactivate TMR.
7. Set the amount of time an alarm is on before it is automatically
canceled (deactivated) by the instrument if the measurements go
back in to range at the percentage rate (confidence level) selected in
Activate TMR:
Option Description
ALL Sets the amount of time a chlorine AND pH measurement
deviation alarm is on before it is canceled-10 to 99 minutes
(30 minutes default).
Option Description
CL2/pH
ONLY
LCC Sets the amount of time an LCC alarm is on before it is
Sets the amount of time a chlorine OR pH measurement
deviation alarm is on before it is canceled-10 to 999 minutes
(30 minutes default).
canceled-10 to 999 minutes (30 minutes default).
8. Push the ENTER key and select CL2 Deviation.
9. Set the chlorine measurement deviation values that activate alarms:
Option Description
CL2 ERR DEV Set the chlorine measurement deviation that will activate an
CL2 WRN DEV Set the chlorine measurement deviation that will activate a
Note: Chlorine deviation is measured by the instrument using the chlorine
value recorded during the last process concentration calibration for chlorine.
error alarm-30 to 99% (50% default).
warning alarm-10 to 30% (20% default).
10. Push the ENTER key and select pH Deviation.
11. Set the pH measurement deviation values that activate alarms:
Option Description
pH ERR DEV Set the pH measurement deviation that will activate an error
pH WRN DEV Set the pH measurement deviation that will activate a
Note: pH deviation is measured by the instrument using the pH value recorded
during the last process concentration calibration for chlorine.
alarm-1 (default) to 3 pH units.
warning alarm-0.5 (default) to 1 pH unit.
Calibrate the sensor
About sensor calibration
The sensor characteristics slowly shift over time and cause the sensor to
lose accuracy. The sensor must be calibrated regularly to maintain
accuracy. The calibration frequency varies with the application and is
best determined by experience.
12
English
Recalibrate the sensor whenever disconnected from power and removed
from water for more than 15 minutes.
Choosing the calibration method
An initial 2-point calibration, including both zero3 and slope
(process concentration) measurements, must be done for new or
refurbished sensors.
One or two measurements are required for sensor calibration.
Measurements are made with the chlorine sensor in the flow cell.
When only one measurement is made (1-point calibration), a zero
calibration or a process concentration measurement (grab sample
analysis) is done. A zero calibration can be done chemically by
measuring water with no chlorine or electrically by electronically
removing the calibration offset produced by the gateway3. A process
concentration measurement is done chemically by measuring the
chlorine concentration of the process flow with a reference method (grab
sample analysis) and then entering the measured value through the
controller.
When two measurements are made (2-point calibration), the first data
point measured is the zero-point and is determined by doing a zero
calibration either electrically or chemically using the same method as the
1-point calibration3. The second data point measured is the process
concentration and is determined by doing a process concentration
measurement (grab sample analysis) using the same method as the 1point calibration.
Note: When a chemical zero calibration is done, the instrument automatically does
an electrical zero calibration before the chemical zero calibration and shows both
offsets in the calibration results.
1-point calibration procedure
1. Push the MENU key and select Sensor Setup, Calibrate, Chlorine.
2. Select 1 Point Sample.
3. If the passcode is enabled in the security menu for the controller,
enter the passcode.
4. Select either Zero Cal (zero calibration) or Process Conc (process
concentration calibration).
5. Select the option for the output signal during calibration:
Option Description
ACTIVE The instrument sends the current measured output value
during the calibration procedure.
HOLD The sensor output value is held at the current measured value
during the calibration procedure.
TRANSFER A preset output value is sent during calibration. Refer to the
controller user manual to change the preset value.
6. If Process Conc was selected:
a. Push ENTER.
The measured value is shown.
b. Wait for the value to stabilize and push ENTER4 to enter a
process flow measurement.
c. Measure the chlorine concentration of the process flow (grab
sample analysis) with an instrument using a reference method
(e.g., DPD). Use the arrow keys to enter the measured value and
push ENTER.
7. If Zero Cal was selected, select the type of calibration:
Option Description
ELECTRICAL The offset produced by the gateway is removed to set the
zero-point (no sample used).
CHEMICAL Water with no chlorine is measured to set the zero-point.
8. If Electrical was selected, wait for the value to stabilize and push
ENTER4 to set the zero-point electrically.
3
An electrical zero calibration is recommended. A chemical zero calibration is only recommended if the process flow chlorine concentrations is
routinely lower than 0.5 ppm.
4
If the option for Auto Stab (auto stabilization) is set to Yes in the Calibration Options menu, the screen will advance to the next step automatically.
Refer to Change the calibration options on page 15.
English 13
9. If Chemical was selected:
a. Turn off the process flow and put water with no chlorine through
the flow cell. Make sure the temperature of the water with no
chlorine is as close as possible to the process sample flow
temperature.
b. Push ENTER.
The measured value is shown.
c. Wait for the value to stabilize and push ENTER4 to set the zero-
point chemically.
10. Review the calibration result:
• Passed—the sensor is calibrated and ready to measure samples.
The slope and/or offset values are shown.
• Failed—the calibration slope or offset is outside of accepted limits.
Do sensor maintenance (refer to Maintenance on page 16) and
then repeat the calibration.
11. If the calibration passed, push ENTER to continue.
12. If the option for operator ID is set to Yes in the Calibration Options
menu, enter an operator ID. Refer to Change the calibration options
on page 15.
13. On the New Sensor screen, select whether the sensor is new:
Option Description
YES The sensor was not calibrated previously with this instrument. The
days of operation and previous calibration curves for the sensor are
reset.
NO The sensor was calibrated previously with this instrument.
14. Return the sensor to the process and push ENTER.
The output signal returns to the active state and the measured
sample value is shown on the measure screen.
Note: If the output mode is set to hold or transfer, select the delay time when
the outputs return to the active state.
2-point calibration procedure
1. Push the MENU key and select Sensor Setup, Calibrate, Chlorine.
2. Select 2 Point Sample.
3. If the passcode is enabled in the security menu for the controller,
enter the passcode.
4. Select the option for the output signal during calibration:
Option Description
ACTIVE The instrument sends the current measured output value
during the calibration procedure.
HOLD The sensor output value is held at the current measured value
during the calibration procedure.
TRANSFER A preset output value is sent during calibration. Refer to the
controller user manual to change the preset value.
5. Select the type of calibration:
Option Description
ELECTRICAL The offset produced by the gateway is removed to set the
zero-point (no sample used). Then a process sample is
measured to set the second point from which the slope is
calculated.
CHEMICAL Water with no chlorine is measured to set the zero-point.
Then a process sample is measured to set the second point
from which the slope is calculated.
6. If Electrical was selected:
a. Wait for the value to stabilize and push ENTER5 to set the zero-
point electrically.
b. Push ENTER to continue the calibration.
The measured value of the process concentration is shown.
c. Wait for the value to stabilize and push ENTER5 to enter a
process flow measurement.
5
If the option for Auto Stab (auto stabilization) is set to Yes in the Calibration Options menu, the screen will advance to the next step automatically.
Refer to Change the calibration options on page 15.
14 English
7. If Chemical was selected:
a. Turn off the process flow and put water with no chlorine through
the flow cell. Make sure the temperature of the water with no
chlorine is as close as possible to the process sample flow
temperature.
b. Push ENTER.
The measured value is shown.
c. Wait for the value to stabilize and push ENTER5 to set the zero-
point chemically.
d. Turn off the flow of water with no chlorine and turn on the process
flow.
e. Push ENTER.
The measured value is shown.
f. Wait for the value to stabilize and push ENTER5 to enter a
process flow measurement.
8. Measure the chlorine concentration of the process flow (grab sample
analysis) with an instrument using a reference method (e.g., DPD).
Use the arrow keys to enter the measured value and push ENTER.
9. Review the calibration result:
• Passed—the sensor is calibrated and ready to measure samples.
The slope and/or offset values are shown.
• Failed—the calibration slope or offset is outside of accepted limits.
Do sensor maintenance (refer to Maintenance on page 16) and
then repeat the calibration.
10. If the calibration passed, push ENTER to continue.
11. If the option for operator ID is set to Yes in the Calibration Options
menu, enter an operator ID. Refer to Change the calibration options
on page 15.
12. On the New Sensor screen, select whether the sensor is new:
Option Description
YES The sensor was not calibrated previously with this instrument. The
days of operation and previous calibration curves for the sensor are
reset.
NO The sensor was calibrated previously with this instrument.
13. Return the sensor to the process and push ENTER.
The output signal returns to the active state and the measured
sample value is shown on the measure screen.
Note: If the output mode is set to hold or transfer, select the delay time when
the outputs return to the active state.
Reset calibration to defaults
To remove a bad calibration, replace the user calibration settings with
the default calibration settings using the Calibrate menu. Then
recalibrate the sensor when needed.
1. Push the MENU key and select Sensor Setup, Calibrate, [Select
Sensor], Reset Defaults.
2. If the passcode is enabled in the security menu for the controller,
enter the passcode.
3. Select Yes and push Enter.
Change the calibration options
The user can set a calibration reminder, enable auto stabilization during
calibrations or include an operator ID with calibration data from the Cal
Options menu.
1. Push the MENU key and select Sensor Setup, Calibrate, [Select
Sensor], Cal Options.
2. Customize the options:
Option Description
AUTO STAB Enables the system to accept measurement signal values
during calibrations and advance to the next step of the
calibration when the system determines the measurement
signal has stabilized-On or Off (default). Enter a
stabilization range-25 to 75 ppb (0.025 to 0.075 ppm).
CAL REMINDER Sets a reminder for the next calibration in days, months or
years.
OP ID ON CAL Includes an operator ID with calibration data—Yes or No
(default). The ID is entered during the calibration.
English 15
Data log
The controller provides one data log for each sensor. The data log stores
the measurement data at selected intervals (user configurable). The data
log can be read out in a CSV format. For instructions on downloading the
logs, please refer to the controller user manual.
Refer to Select the parameters on page 11 for information about setting
time intervals for data storage in the data log.
Maintenance task Frequency
Replace the electrolyte 3 to 6 months
Replace the sensor 3 years
(The sensor may need to be replaced
more often depending on water quality
and application.)
Modbus registers
A list of Modbus registers is available for network communication. Refer
to the manufacturer's website for more information.
Maintenance
W A R N IN G
Multiple hazards. Do not disassemble the instrument for maintenance.
If the internal components must be cleaned or repaired, contact the
manufacturer.
Multiple hazards. Only qualified personnel must conduct the tasks
described in this section of the document.
Maintenance schedule
Maintenance task Frequency
Polish the electrode When sensor readings are unstable or
Replace the membrane cap
6
The electrolyte is replaced when the membrane cap is replaced.
6
C A U T IO N
the slope is too low
1 year
(The cap may need to be replaced
more often depending on water
quality.)
Remove the sensor from the flow cell
Note: The sensor can be removed from water for up to 1 hour to do maintenance
on the sensor. The membrane cap and electrolyte will need to be replaced after
1 hour.
16 English
English 17
Polish the electrode tip
Polish the flat tip of the electrode with the special abrasive paper
provided.
Note: If calibration is impossible due to unstable sensor readings or too low
calibration slope, replace the electrolyte and membrane cap. Only polish the
electrode tip if replacing the electrolyte and membrane cap do not correct the
problem.
1. Disconnect the cable from the sensor.
2. Remove the sensor from the flow cell.
3. Read the precautions in Sensor assembly on page 7.
4. Lift up the rubber band that covers the vent hole marked “M48” on
the membrane cap and slide the rubber band over so it does not
cover the vent hole.
5. Turn the membrane cap counter-clockwise and remove the
membrane cap from the sensor.
6. Clean the electrode with a clean, dry paper towel.
7. Polish the dry electrode tip (Figure 3). Hold one corner of the special
abrasive paper while doing procedure.
Note: No additional force should be applied downward other than the sensor
weight.
8. Assemble the sensor with the old membrane cap.
9. Install the sensor in the flow cell and connect the sensor cable.
10. Condition the sensor by operating it for 6 to 12 hours. The sensor is
conditioned when the sensor readings stabilize. Refer to Diagnostic
and test menu on page 20 for information about viewing sensor
readings.
11. Calibrate the sensor.
Figure 3 Polish the electrode with the special abrasive
paper
1 Dry, clean paper towel 3 Special abrasive paper
2 Free chlorine sensor 4 Total chlorine sensor
Replace the membrane cap
18
English
1. Disconnect the cable from the sensor.
2. Remove the sensor from the flow cell.
3. Read the precautions in Sensor assembly on page 7.
4. Turn the membrane cap counter-clockwise and remove the
membrane cap from the sensor.
5. Dispose of the old membrane cap.
6. Assemble the sensor with a new membrane cap.
7. Install the sensor in the flow cell and connect the sensor cable.
8. Condition the sensor by operating it for 6 to 12 hours. The sensor is
conditioned when the sensor readings stabilize. Refer to Diagnostic
and test menu on page 20 for information about viewing sensor
readings.
9. Calibrate the sensor.
Replace the electrolyte
1. Disconnect the cable from the sensor.
2. Remove the sensor from the flow cell.
3. Read the precautions in Sensor assembly on page 7.
4. Lift up the rubber band that covers the vent hole marked “M48” on
the membrane cap and slide the rubber band over so it does not
cover the vent hole.
5. Turn the membrane cap counter-clockwise and remove the
membrane cap from the sensor.
6. Hold the membrane cap with the electrolyte on the bottom and shake
up and down 1-2 times to remove old electrolyte.
7. Assemble the sensor with the membrane cap.
8. Install the sensor in the flow cell and connect the sensor cable.
9. Condition the sensor by operating it until the sensor readings
stabilize. Refer to Diagnostic and test menu on page 20 for
information about viewing sensor readings.
10. Calibrate the sensor.
Prepare the sensor for storage
Note: Do not touch the electrodes and keep the electrodes clean. Do not remove
the layer on the electrodes.
1. Turn the membrane cap counter-clockwise and remove the
membrane cap from the sensor.
2. Rinse the membrane cap and electrode in clean water.
3. Dry the membrane cap and electrode with a clean, dry paper towel in
a place free of dust.
4. Loosely put the membrane cap on to the electrode shaft to protect
the electrode. The membrane must not rest against the measuring
electrode.
Remove the sensor from storage
Pre-requisite: Obtain a new membrane cap. The old membrane cap
cannot be used again.
1. Read the precautions in Sensor assembly on page 7.
2. Turn the membrane cap counter-clockwise and remove the
membrane cap from the sensor.
3. Dispose of the old membrane cap.
4. Polish the electrode tip with the special abrasive paper.
5. Assemble the sensor with a new membrane cap.
6. Install the sensor in the flow cell and connect the sensor cable.
7. Condition the sensor by operating it for 6 to 12 hours. The sensor is
conditioned when the sensor readings stabilize. Refer to Diagnostic
and test menu on page 20 for information about viewing sensor
readings.
8. Calibrate the sensor.
C A U T IO N
The electrolyte contains potassium halide and buffer to adjust acidity. Read the
MSDS sheet before opening the electrolyte bottle.
The sensor can be stored for up to 3 years from the date of manufacture
when prepared as described. Refer to Specifications on page 3 for
storage specifications.
English
19
Troubleshooting
Diagnostic and test menu
The diagnostic and test menu shows current and historical information
about the chlorine analyzer. Refer to Table 1. To access the diagnostic
and test menu, push the MENU key and select Sensor Setup, Diag/Test.
Table 1 DIAG/TEST menu
Option Description
GATEWAY INFO Shows the firmware version, driver version, serial number
and boot version for the controller and the types of
sensors connected to the controller.
CAL DAYS Shows the number of days since the sensor was last
calibrated.
CAL HISTORY Shows a list of the times when the sensor was calibrated.
Push ENTER to scroll through the entries and view a
summary of the calibration data.
RST CAL HISTORY Resets the sensor calibration history. Requires passcode.
SIGNALS Shows the sensor measurement signal value in mV.
SENSOR DAYS Shows the number of days the sensor has been in
operation.
RST SENSORS Resets the sensor days and calibration days to default.
Requires passcode.
CALIBRATION Shows the slope and offset values for chlorine and pH (if
pH sensor is used). Shows the offset value for the
temperature (if pH sensor is used).
Error list
Errors may occur for various reasons. The sensor reading on the
measurement screen flashes. All outputs are held when specified in the
controller menu. To show the sensor errors, push the MENU key and
select Sensor Diag, Error List. A list of possible errors is shown below.
Table 2 Error list for the sensor
Error Description Resolution
CL CAL
REQD
CL MAINT
REQD
CL MAINT
REQD
CONC
TOO LOW
CONC
TOO HIGH
A chlorine calibration and/or pH
calibration is required.
The chlorine and/or pH
measurement has changed
enough to cause a Cal Watch
alarm to occur. Refer to the
chlorine sensor manual for
more information.
Chlorine sensor maintenance is
required.
The slope is less than 30% or
more than 300% of the default.
The default slope is
100 mV/ppm (100%).
Chlorine sensor maintenance is
required.
The offset is too high (more
than ±50 mV).
The chlorine signal is > 0 mV.
The potential delivered by the
sensor is outside of the range
0 to -2500 mV.
The chlorine signal is less than
-2500 mV or greater than
2500 mV (by absolute value).
Calibrate the chlorine sensor
and/or pH sensor.
Do sensor maintenance and then
repeat the calibration, or replace
the sensor. Refer to the chlorine
sensor manual for more
information.
Do sensor maintenance and then
repeat the calibration, or replace
the sensor. Refer to the chlorine
sensor manual for more
information.
A connection error occurred or
the chlorine sensor is not
polarized/equilibrated in the
sample sufficiently.
Warning list
A warning does not affect the operation of menus, relays and outputs. A
warning icon flashes and a message is shown on the bottom of the
measurement screen. To show the sensor warnings, push the MENU
20
English
key and select Sensor Diag, Warning List. A list of possible warnings is
shown below.
Table 3 Warning list for the sensor
Warning Description Resolution
CL CAL
RECD
CL CAL
RECD
CL CAL TODOThe Sensor Days value for the
CL MAINT
RECD
CL MAINT
RECD
A chlorine and/or pH calibration is
recommended.
The chlorine and/or pH measurement
has changed enough to cause a Cal
Watch warning alarm to occur. Refer
to the sensor manuals for more
information.
A chlorine calibration is recommended.
Chlorine calibration data is not
available (sensor with default
calibration data).
chlorine sensor is greater than the Cal
Reminder value.
Chlorine sensor maintenance is
recommended.
The slope is 30 to 45% of default or
the slope is 250 to 300% of default.
The default slope is 100 mV/ppm
(100%).
Chlorine sensor maintenance is
recommended.
The offset is -50 mV to 45 mV or the
offset is 45 mV to 50 mV.
Calibrate the chlorine
sensor and/or pH
sensor.
Calibrate the chlorine
sensor.
Calibrate the chlorine
sensor.
Do sensor
maintenance and then
repeat the calibration,
or replace the sensor.
Do sensor
maintenance and then
repeat the calibration,
or replace the sensor.
Event log
The controller provides one event log for each sensor. The event log
stores a variety of events that occur on the devices such as calibrations
done, calibration options changed, etc. A list of possible events is shown
below. The event log can be read out in a CSV format. For instructions
on downloading the logs, refer to the controller user manual.
Table 4 Event log
Event Description
Power On The power was turned on.
Flash Failure The external flash has failed or is corrupted.
1pointChemZeroCL2_Start Start of one-point chemical zero calibration for
chlorine
1pointChemZeroCL2_End End of one-point chemical zero calibration for
chlorine
1pointElecZeroCL2_Start Start of one-point electrical zero calibration for
chlorine
1pointElecZeroCL2_End End of one-point electrical zero calibration for
chlorine
1pointProcessConc_Start Start of one-point process concentration for chlorine
1pointProcessConc _End End of one-point process concentration for chlorine
2pointChemCL2_Start Start of two-point chemical calibration for chlorine
2pointChemCL2_End End of two-point chemical calibration for chlorine
2pointElecCL2_Start Start of two-point electrical calibration for chlorine
2pointElecCL2_End End of two-point electrical calibration for chlorine
CL2CalSetDefault The chlorine calibration was reset to the default.
AllCalSetDefault All sensor calibration data was reset to the default.
CL2CalOptionChanged The chlorine calibration option was changed.
SensorConfChanged The sensor configuration was changed.
ResetCL2CalHist The CL2 calibration history was reset.
ResetAllSensorsCalHist All sensor calibration history was reset.
English 21
Table 4 Event log (continued)
Event Description
ResetCL2Sensor The CL2 calibration data (sensor days, calibration
ResetAllSensors All sensor calibration data (sensor days, calibration
history and calibration data) was reset to the
default.
history and calibration data) was reset to the
default.
Replacement parts
W A R N IN G
Personal injury hazard. Use of non-approved parts may cause
personal injury, damage to the instrument or equipment malfunction.
The replacement parts in this section are approved by the
manufacturer.
Note: Product and Article numbers may vary for some selling regions. Contact the
appropriate distributor or refer to the company website for contact information.
Description Quantity Item no.
Sensor, free chlorine 1 8626200
Sensor, free chlorine (EU) 1 8626205
Electrolyte, free chlorine sensor 100 mL 9160600
Kit, membrane replacement, CLF10 sc
SS / CLT10 sc SS tip (for 8626200,
8626205, 8628900, 8628905)
Kit, membrane replacement, CLF10 sc
plastic tip (for 9180600, 9180605)
Sensor, total chlorine 1 8628900
Sensor, total chlorine (EU) 1 8628905
Table 5
1 8633100
1 9160200
Table 5 (continued)
Description Quantity Item no.
Electrolyte, total chlorine sensor 100 mL 9181400
Kit, membrane replacement, CLT10 sc,
plastic tip (for 9150300, 9150305)
1 9180900
22 English
Inhaltsverzeichnis
Technische Daten auf Seite 23 Wartung auf Seite 38
Allgemeine Informationen
auf Seite 24
Installation auf Seite 27 Ersatzteile auf Seite 45
Betrieb auf Seite 31
Fehlersuche und Behebung
auf Seite 42
Technische Daten
Änderungen vorbehalten.
Technische Daten Details
Messbereich 0 bis 20 ppm
Untere Nachweisgrenze 30 ppb (0,030 ppm)
Auflösung 0,001 ppm (1 ppb)
pH-Betriebsbereich 4 bis 9 pH-Einheiten
1
Technische Daten Details
Genauigkeit
(Chlorkonzentrationen innerhalb
von ±2 ppm bzw. 20 % (je
nachdem, welcher Wert geringer
ist) des kalibrierten Punktes)
Wiederholgenauigkeit 30 ppb oder ±3 %, je nachdem, welcher Wert
Ansprechzeit Freies Chlor: 140 Sekunden bei 90 %
Messzeit Kontinuierlich
Störeinflüsse Freies Chlor: Monochloramin, Chlordioxid,
Maximaler Druck 0,5 bar, keine Druckstöße und/oder
Freies Chlor (0 bis 10 ppm):
• ±3 % des Referenztests2 (DPD) bei
konstantem pH-Wert unter 7,2 (±0,2 pHEinheiten)
• ±10 % des Referenztests2 (DPD) bei
konstantem pH-Wert unter 8,5 (±0,5 pHEinheiten des pH-Wertes bei der ChlorKalibrierung)
Gesamtchlor (0 bis 10 ppm):
• ±10 % des Referenztests2 (DPD) bei
konstantem pH-Wert unter 8,5 (±0,5 pHEinheiten des pH-Wertes bei der ChlorKalibrierung)
• ±20 % des Referenztests2 (DPD) bei
einem pH-Wert über 8,5
größer ist
Änderung (T90), konstanter Temperatur und
konstantem pH-Wert
Gesamt-Chlor: 100 Sekunden bei 90 %
Änderung (T90), konstanter Temperatur und
konstantem pH-Wert
Ozon und Kalksteinablagerungen
Gesamt-Chlor: Chlordioxid, Ozon und
Kalksteinablagerungen
Vibrationen
1
Die Chlorsensoren eignen sich nicht für Anwendungen mit beständig niedrigen (< 0,1 ppm) oder keinen Chlorkonzentrationen.
2
Der Test muss beim Messpunkt des Analysators durchgeführt werden.
Deutsch 23
Technische Daten Details
Durchflussmenge 30 bis 50 l/h (7,9 bis 13,2 Gallonen/Stunde)
Optimale Durchflussmenge: 40 l/h
(10,5 Gallonen/Stunde)
Stromversorgung 12 VDC, max. 30 mA (wird vom Controller
Betriebstemperatur 5 bis 45 °C (41 bis 113 °F)
Lagertemperatur Sensor: 0 bis 50 °C (32 bis 122 °F), trocken,
Abmessungen
(Länge/Durchmesser)
Länge und Art des Kabels 1 m
Kabelanschluss 5-poliger Steckverbinder, M12
Messverfahren Reagenzfreies elektrochemisches
Kalibrierverfahren Einpunkt- und Zweipunkt-Kalibrierung
Temperaturkompensation Integrierter Temperatursensor
Werkstoffe Korrosionsbeständige Werkstoffe (rostfreier
Gewährleistung Ein Jahr Gewährleistung auf den
bereitgestellt)
ohne Elektrolyten
Elektrolyt: 15 bis 25 °C (59 bis 77 °F)
195 mm (7,68 Zoll)/25 mm (0,98 Zoll)
Amperometriesystem mit drei Elektroden
(Nullpunkt und Steilheit)
Stahl, PVC, Silikonkautschuk und
Polykarbonat)
Elektrodenkörper einschließlich der
Elektronik (EU: zwei Jahre)
Allgemeine Informationen
Der Hersteller ist nicht verantwortlich für direkte, indirekte,
versehentliche oder Folgeschäden, die aus Fehlern oder
Unterlassungen in diesem Handbuch entstanden. Der Hersteller behält
sich jederzeit und ohne vorherige Ankündigung oder Verpflichtung das
Recht auf Verbesserungen an diesem Handbuch und den hierin
beschriebenen Produkten vor. Überarbeitete Ausgaben der
Bedienungsanleitung sind auf der Hersteller-Webseite erhältlich.
Sicherheitshinweise
H I N W EI S
Der Hersteller ist nicht für Schäden verantwortlich, die durch Fehlanwendung
oder Missbrauch dieses Produkts entstehen, einschließlich, aber ohne
Beschränkung auf direkte, zufällige oder Folgeschäden, und lehnt jegliche
Haftung im gesetzlich zulässigen Umfang ab. Der Benutzer ist selbst dafür
verantwortlich, schwerwiegende Anwendungsrisiken zu erkennen und
erforderliche Maßnahmen durchzuführen, um die Prozesse im Fall von möglichen
Gerätefehlern zu schützen.
Bitte lesen Sie dieses Handbuch komplett durch, bevor Sie dieses Gerät
auspacken, aufstellen oder bedienen. Beachten Sie alle Gefahren- und
Warnhinweise. Nichtbeachtung kann zu schweren Verletzungen des
Bedieners oder Schäden am Gerät führen.
Stellen Sie sicher, dass die durch dieses Messgerät bereitgestellte
Sicherheit nicht beeinträchtigt wird. Verwenden bzw. installieren Sie das
Messsystem nur wie in diesem Handbuch beschrieben.
Bedeutung von Gefahrenhinweisen
Kennzeichnet eine mögliche oder drohende Gefahrensituation, die, wenn sie
nicht vermieden wird, zum Tod oder zu schweren Verletzungen führt.
Kennzeichnet eine mögliche oder drohende Gefahrensituation, die, wenn sie
nicht vermieden wird, zum Tod oder zu schweren Verletzungen führen kann.
Kennzeichnet eine mögliche Gefahrensituation, die zu geringeren oder
moderaten Verletzungen führen kann.
Kennzeichnet eine Situation, die, wenn sie nicht vermieden wird, das Gerät
beschädigen kann. Informationen, die besonders beachtet werden müssen.
G E F A HR
W A R N UN G
V O R S IC HT
H I N W EI S
24 Deutsch
Warnhinweise
Lesen Sie alle am Gerät angebrachten Aufkleber und Hinweise.
Nichtbeachtung kann Verletzungen oder Beschädigungen des Geräts
zur Folge haben. Im Handbuch werden auf die am Gerät angebrachten
Symbole in Form von Warnhinweisen verwiesen.
Dies ist das Sicherheits-Warnsymbol. Befolgen Sie alle
Sicherheitshinweise im Zusammenhang mit diesem Symbol, um
Verletzungen zu vermeiden. Wenn es am Gerät angebracht ist,
beachten Sie die Betriebs- oder Sicherheitsinformationen im
Handbuch.
Dieses Symbol weist auf die Gefahr eines elektrischen Schlages hin,
der tödlich sein kann.
Dieses Symbol zeigt das Vorhandensein von Geräten an, die
empfindlich auf elektrostatische Entladung reagieren. Es müssen
Vorsichtsmaßnahmen getroffen werden, um die Geräte nicht zu
beschädigen.
Elektrogeräte, die mit diesem Symbol gekennzeichnet sind, dürfen
nicht im normalen öffentlichen Abfallsystem entsorgt werden. Senden
Sie Altgeräte an den Hersteller zurück. Dieser entsorgt die Geräte
ohne Kosten für den Benutzer.
Allgemeine Informationen über das Produkt
Sowohl der Sensor zur Messung des Gehalts an freiem Chlor als auch
der Sensor zur Messung des Gesamt-Chlorgehalts sind reagenzfreie
elektrochemische Sensoren, die zur Messung der Chlorkonzentration in
reinen Wasserproben dienen. Der Sensor zur Messung des Gehalts an
freiem Chlor misst den Gehalt an freiem Chlor im Wasser, der durch
anorganische Chlorprodukte entsteht. Der Sensor zur Messung des
Gesamt-Chlorgehalts misst den Gesamt-Chlorgehalt (freies Chlor und
Chlorverbindungen) im Wasser.
Schwankungen des pH-Wertes beeinflussen die Genauigkeit der ChlorMessung. Der am Controller angezeigte Chlorwert sinkt mit jeder
Zunahme des pH-Wertes um eine Einheit für gewöhnlich um ca. 10 %.
Dieser Sensor umfasst einen integrierten Temperatursensor, der die
Genauigkeit der Chlor-Messung erhöht. Der Sensor nutzt das Signal der
Temperaturmessung intern für die automatische
Temperaturkompensation. Der Wert der Temperaturmessung wird nicht
am Controller angezeigt.
Dieser Sensor kann zusammen mit der digitalen Schnittstelle für den
reagenzienfreien Chloranalysator CLF10sc und CLT10sc und mit einem
der SC-Controller zur Datenerfassung und Bedienung eingesetzt
werden.
In Abbildung 1 sind der Sensor zur Messung des Gehalts an freiem
Chlor und der Sensor zur Messung des Gesamt-Chlorgehalts
dargestellt.
Deutsch 25
Abbildung 1 Sensoransicht
1 Elektrode des Sensors zur
Messung des Gehalts an freiem
Chlor
2 Membrankappe 5 Gummiband
3 Membran 6 Elektrode des Sensors zur
4 Entlüftungsöffnung in der
Membrankappe
Messung des Gesamt-Chlorgehalts
Sensor-LEDs
Die grüne und die orangefarbene LED im transparenten Bereich des
Chlorsensors zeigen den Zustand der Stromversorgung, der Polarität
des Sensorsignals und der elektrochemischen Zelle an.
LED-Farbe Zustand Beschreibung
Grün Ein (kontinuierlich) Der Prozessor funktioniert ordnungsgemäß.
Aus oder Ein
(blinkend)
Orange Aus Der Sensor funktioniert ordnungsgemäß.
Ein (kontinuierlich) Das interne Signal von der Arbeitselektrode
Aus (blinkend) Die Chlorkonzentration ist zu hoch.
Die Spannung ist zu niedrig. Dies hat zu
einer Fehlfunktion des Prozessors geführt.
hat die falsche Polarität.
Falls die LED länger als 30 Minuten lang
leuchtet, muss eine Sensorwartung
durchgeführt werden.
Reduzieren Sie die Chlorkonzentration.
Funktionsprinzip
Dieser Sensor ist ein potenziostatisches Gerät mit drei Elektroden,
wobei es sich bei einer der Elektroden um eine speziell angeordnete
Gegenelektrode handelt. Die Messelektrode (Arbeitselektrode) ist mit
einer Membran bedeckt und befindet sich zusammen mit der
Referenzelektrode im Elektrolyten. Dieser Elektrodenbereich enthält
einen speziellen Elektrolyten und ist durch die Membran von der zu
messenden Probe getrennt.
Der Sensor nutzt ein Amperometrieverfahren, um die Chlorkonzentration
im Wasser zu messen. Chloranteile in der zu messenden Probe
passieren die Membran und reagieren mit der Arbeitselektrode. Diese
Reaktion erzeugt einen elektrischen Strom, dessen Größe proportional
zur Chlorkonzentration ist. Das elektrische Signal wird durch die
Sensorelektronik verstärkt und als Spannung (mV) zum Gerät
übertragen. Die dritte Elektrode (Hilfs- bzw. Gegenelektrode) wird in die
zu messende Probe gehalten und dient zur Aufrechterhaltung eines
konstanten Arbeitspotenzials an der Arbeitselektrode. Das
Arbeitspotenzial wird durch die Referenzelektrode gesteuert. Dieser
Aufbau verbessert die Stabilität der Messungen.
Der stark gepufferte Elektrolyt in der Membrankappe dient dem internen
Ausgleich von Schwankungen des pH-Wertes in der zu messenden
Probe. Dieser Puffer trägt dazu bei, dass Hypochlorit-Ionen, die die
26
Deutsch
Membran durchdringen, unverzüglich in Hypochlorsäure-Moleküle
umgewandelt werden. Durch den Elektrolyten ist die Messung nahezu
unabhängig vom pH-Wert der zu messenden Probe.
Durch den integrierten Temperaturausgleich wirkt sich die Temperatur
des gemessenen Wassers nicht auf die Chlormesswerte aus.
Produktkomponenten
Vergewissern Sie sich anhand von Abbildung 2, dass alle Teile geliefert
wurden. Sollte eines der aufgelisteten Teile fehlen oder defekt sein,
wenden Sie sich bitte sofort an den Hersteller oder die zuständige
Vertretung.
Abbildung 2 Sensorkomponenten
1 Chlorsensor 4 Geteilter Ring
2 Spezial-Schmirgelpapier 5 Elektrolyt
3 Geteilter O-Ring
Installation
V O R S IC HT
Mehrere Gefahren. Nur qualifiziertes Personal sollte die in diesem
Kapitel des Dokuments beschriebenen Aufgaben durchführen.
Zusammenbau des Sensors
V O R S IC HT
Der Elektrolyt enthält Kaliumhalogenid und einen Puffer zur Anpassung des
Säuregrades. Lesen Sie das Sicherheitsdatenblatt, bevor Sie die
Elektrolytflasche öffnen.
Bevor der Sensor in der Chlordurchflusszelle installiert werden kann,
muss er zusammengebaut werden. Der Zusammenbau umfasst die
folgenden Arbeitsgänge: Membrankappe entfernen, Membrankappe mit
Elektrolyten füllen und Membrankappe auf den Elektrodenschaft setzen.
Lesen Sie die folgenden Sicherheitshinweise, bevor Sie den Sensor
zusammenbauen:
• Berühren Sie die Elektroden nicht, und halten Sie die Elektroden
sauber. Entfernen Sie die Schicht auf den Elektroden nicht.
• Bevor Sie die Membrankappe entfernen, heben Sie das Gummiband
an, das die mit „M48“ markierte Entlüftungsöffnung auf der
Membrankappe abdeckt. Über diese Entlüftung kann Luft in die
Membrankappe gelangen. Die Membran wird zerstört, wenn die
Entlüftung beim Entfernen der Membrankappe abgedeckt ist, da sich
in der Membrankappe ein Vakuum aufbaut.
• Entfernen Sie die Metall-Membranhalterung nicht von der Kappe.
Dadurch wird die Membran zerstört.
• Setzen Sie Membrankappe immer auf eine saubere, nicht
absorbierende Oberfläche.
• Schütteln Sie die Elektrolytflasche nicht, da sich beim Schütteln der
Flasche Blasen bilden. Lagern Sie die Elektrolytflasche nach dem
Öffnen so, dass der Verschluss nach unten zeigt.
• Achten Sie darauf, dass der Elektrolyt so wenige Blasen wie möglich
enthält, wenn Sie die Membran mit Elektrolyten füllen. Zu viele Blasen
verschlechtern das Betriebsverhalten des Sensors.
Deutsch
27
• Verschließen Sie die mit „M48“ markierte Entlüftungsöffnung auf der
Membrankappe nicht mit dem Finger, wenn Sie die Membrankappe
anbringen. Auf diese Weise wird verhindert, dass überschüssiger
Elektrolyt aus der Entlüftung entweicht. Die Membran wird beschädigt,
wenn überschüssiger Elektrolyt nicht entweichen kann. Wischen Sie
jegliche Elektrolytrückstände an der Außenseite des Sensors
vorsichtig mit einem sauberen und trockenen Lappen oder Papiertuch
ab. Achten Sie darauf, dass Sie die Membran nicht berühren.
• Achten Sie darauf, dass die Membrankappe vollständig am Anschlag
anliegt. Der erste Widerstand entsteht durch die O-Ring-Dichtung.
Bringen Sie die Kappe jedoch so an, dass die Kappe den
Elektrodenschaft berührt.
Zusammenbauen des Chlorsensors
28 Deutsch
Deutsch 29
Installation des Sensors
Der Sensor muss vor dem Ersteinsatz und nach einer Sensorwartung in
der Durchflusszelle installiert, an der Schnittstelle angeschlossen,
konditioniert und anschließend kalibriert werden. Gehen Sie bei der
Installation und beim Anschließen des Sensors anhand der bildlich
dargestellten Arbeitsschritte vor.
Um den Sensor zu konditionieren, lassen Sie ihn sechs bis zwölf
Stunden in Betrieb, bis sich die Sensormesswerte stabilisiert haben.
Informationen zum Anzeigen von Sensormesswerten finden Sie unter
Diagnose- und Testmenü auf Seite 42.
Hinweis: Der Controller und der daran angeschlossene Sensor müssen
kontinuierlich in Betrieb bleiben, damit die Kalibrierung nicht verloren geht.
30 Deutsch
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