Hach Chlorine Sensor Användarmanual

Typ
Användarmanual
DOC023.98.80088
Chlorine Sensor
02/2018, Edition 9
User Manual
Bedienungsanleitung
Manuale utente
Manuel de l’utilisateur
Manual del usuario
Manual do utilizador
Návod k použití
Brugervejledning
Gebruikershandleiding
Instrukcja obsługi
Bruksanvisning
Ръководство за потребителя
Felhasználói kézikönyv
Manual de utilizare
Руководство пользователя
Kullanıcı Kılavuzu
Návod na použitie
Navodila za uporabo
Korisnički priručnik
Εγχειρίδιο χρήσης
English...................................................................................................................................................................................................3
Deutsch...............................................................................................................................................................................................23
Italiano................................................................................................................................................................................................. 46
Français.............................................................................................................................................................................................. 68
Español............................................................................................................................................................................................... 90
Português........................................................................................................................................................................................ 112
Čeština.............................................................................................................................................................................................. 134
Dansk.................................................................................................................................................................................................155
Nederlands...................................................................................................................................................................................... 176
Polski................................................................................................................................................................................................. 198
Svenska............................................................................................................................................................................................ 220
български....................................................................................................................................................................................... 241
Magyar.............................................................................................................................................................................................. 265
Română............................................................................................................................................................................................ 286
Русский............................................................................................................................................................................................ 308
Türkçe................................................................................................................................................................................................332
Slovenský jazyk............................................................................................................................................................................ 353
Slovenski.......................................................................................................................................................................................... 374
Hrvatski............................................................................................................................................................................................. 395
Ελληνικά........................................................................................................................................................................................... 416
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
1
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 test
2
(DPD) at constant
pH less than 7.2 (±0.2 pH unit)
± 10% of the reference test
2
(DPD) at stable
pH less than 8.5 (±0.5 pH unit from the pH at
chlorine calibration)
Total chlorine (0 to 10 ppm):
± 10% of the reference test
2
(DPD) at stable
pH less than 8.5 (±0.5 pH unit from the pH at
chlorine calibration)
± 20% of the reference test
2
(DPD) at pH
greater than 8.5
Specification Details
Repeatability 30 ppb or 3%, whichever is greater
Response time Free chlorine: 140 seconds for 90% change (T
90
)
at a stable temperature and pH
Total chlorine: 100 seconds for 90% change (T
90
)
at a stable temperature and pH
Sampling time Continuous
Interferences Free chlorine: Monochloramine, chlorine dioxide,
ozone and chalk deposits
Total chlorine: Chlorine dioxide, ozone and chalk
deposits
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)
40 L/hour (10.5 gal/hour) – optimal
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
electrolyte
Electrolyte: 15 to 25 °C (59 to 77 °F)
Dimensions
(length/diameter)
195 mm (7.68 in.)/25 mm (0.98 in.)
Cable length/type 1 m
Cable connection 5 pin, M12 connector
Measurement method Reagentless, electrochemical, amperometric,
three-electrode system
Calibration methods 1-point or 2-point (zero and slope) calibration
Temperature compensation Internal temperature sensor
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,
PVC, silicon rubber and polycarbonate)
Warranty 1 year warranty on the electrode body, includes
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 C E
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
D A N G E R
Indicates a potentially or imminently hazardous situation which, if not avoided, will
result in death or serious injury.
W A R N I N G
Indicates a potentially or imminently hazardous situation which, if not avoided,
could result in death or serious injury.
C A U T I O N
Indicates a potentially hazardous situation that may result in minor or moderate
injury.
N O T I C E
Indicates a situation which, if not avoided, may cause damage to the instrument.
Information that requires special emphasis.
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 Electro-
static 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 end-
of-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
4 Vent hole in membrane cap
2 Membrane cap 5 Rubber band
3 Membrane 6 Electrode of the total chlorine
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)
The voltage is too low which has caused a
malfunction of the processor.
Orange Off The sensor is working correctly.
On (steady) The internal signal from the working electrode
has the wrong polarity.
If the LED is on for longer than 30 minutes, do
sensor maintenance.
On (flashing) The level of chlorine concentration is too high.
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 I O 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 I O 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.
Customizes the options for sensor data handling and
storage. Refer to Select the parameters on page 11.
RESET
DEFAULTS
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
Sets the units for the sensor measurements-Auto ppb-ppm,
Auto ug/L-mg/L, Fixed ppm or Fixed mg/L.
DISPLAY
FORMAT
Sets the number of decimal places that are shown on the
measure screen-X.XXX, XX.XX (default), XXX.X or XXXX
(Auto).
SELECT
RANGE
Sets the measurement range-0 to 10 ppm.
CAL WATCH Shown if pH sensor is used-refer to Select the Cal Watch
alarm values on page 11.
FILTER Sets a time constant to increase signal stability. The time
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.
LOG SETUP Sets the time interval for event and data logging for
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
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).
CL2/pH
ONLY
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).
LCC ACTIVATE TMR: Set the amount of time a chlorine measurement
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
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).
LCC Sets the amount of time an LCC alarm is on before it is
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
error alarm-30 to 99% (50% default).
CL2 WRN DEV Set the chlorine measurement deviation that will activate a
warning alarm-10 to 30% (20% default).
Note: Chlorine deviation is measured by the instrument using the chlorine
value recorded during the last process concentration calibration for chlorine.
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
alarm-1 (default) to 3 pH units.
pH WRN DEV Set the pH measurement deviation that will activate a
warning alarm-0.5 (default) to 1 pH unit.
Note: pH deviation is measured by the instrument using the pH value recorded
during the last process concentration calibration for chlorine.
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 zero
3
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 gateway
3
. 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 calibration
3
. 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 1-
point 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 ENTER
4
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
ENTER
4
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 ENTER
4
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 ENTER
5
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 ENTER
5
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 ENTER
5
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 ENTER
5
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.
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 I N G
Multiple hazards. Do not disassemble the instrument for maintenance.
If the internal components must be cleaned or repaired, contact the
manufacturer.
C A U T I O N
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
the slope is too low
Replace the membrane cap
6
1 year
(The cap may need to be replaced
more often depending on water
quality.)
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.)
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.
6
The electrolyte is replaced when the membrane cap is replaced.
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
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.
18
English
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
C A U T I O 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.
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.
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
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.
Calibrate the chlorine sensor
and/or pH sensor.
CL MAINT
REQD
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%).
Do sensor maintenance and then
repeat the calibration, or replace
the sensor. Refer to the chlorine
sensor manual for more
information.
CL MAINT
REQD
Chlorine sensor maintenance is
required.
The offset is too high (more
than ±50 mV).
Do sensor maintenance and then
repeat the calibration, or replace
the sensor. Refer to the chlorine
sensor manual for more
information.
CONC
TOO LOW
The chlorine signal is > 0 mV.
The potential delivered by the
sensor is outside of the range
0 to -2500 mV.
A connection error occurred or
the chlorine sensor is not
polarized/equilibrated in the
sample sufficiently.
CONC
TOO HIGH
The chlorine signal is less than
-2500 mV or greater than
2500 mV (by absolute value).
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
  • Page 1 1
  • Page 2 2
  • Page 3 3
  • Page 4 4
  • Page 5 5
  • Page 6 6
  • Page 7 7
  • Page 8 8
  • Page 9 9
  • Page 10 10
  • Page 11 11
  • Page 12 12
  • Page 13 13
  • Page 14 14
  • Page 15 15
  • Page 16 16
  • Page 17 17
  • Page 18 18
  • Page 19 19
  • Page 20 20
  • Page 21 21
  • Page 22 22
  • Page 23 23
  • Page 24 24
  • Page 25 25
  • Page 26 26
  • Page 27 27
  • Page 28 28
  • Page 29 29
  • Page 30 30
  • Page 31 31
  • Page 32 32
  • Page 33 33
  • Page 34 34
  • Page 35 35
  • Page 36 36
  • Page 37 37
  • Page 38 38
  • Page 39 39
  • Page 40 40
  • Page 41 41
  • Page 42 42
  • Page 43 43
  • Page 44 44
  • Page 45 45
  • Page 46 46
  • Page 47 47
  • Page 48 48
  • Page 49 49
  • Page 50 50
  • Page 51 51
  • Page 52 52
  • Page 53 53
  • Page 54 54
  • Page 55 55
  • Page 56 56
  • Page 57 57
  • Page 58 58
  • Page 59 59
  • Page 60 60
  • Page 61 61
  • Page 62 62
  • Page 63 63
  • Page 64 64
  • Page 65 65
  • Page 66 66
  • Page 67 67
  • Page 68 68
  • Page 69 69
  • Page 70 70
  • Page 71 71
  • Page 72 72
  • Page 73 73
  • Page 74 74
  • Page 75 75
  • Page 76 76
  • Page 77 77
  • Page 78 78
  • Page 79 79
  • Page 80 80
  • Page 81 81
  • Page 82 82
  • Page 83 83
  • Page 84 84
  • Page 85 85
  • Page 86 86
  • Page 87 87
  • Page 88 88
  • Page 89 89
  • Page 90 90
  • Page 91 91
  • Page 92 92
  • Page 93 93
  • Page 94 94
  • Page 95 95
  • Page 96 96
  • Page 97 97
  • Page 98 98
  • Page 99 99
  • Page 100 100
  • Page 101 101
  • Page 102 102
  • Page 103 103
  • Page 104 104
  • Page 105 105
  • Page 106 106
  • Page 107 107
  • Page 108 108
  • Page 109 109
  • Page 110 110
  • Page 111 111
  • Page 112 112
  • Page 113 113
  • Page 114 114
  • Page 115 115
  • Page 116 116
  • Page 117 117
  • Page 118 118
  • Page 119 119
  • Page 120 120
  • Page 121 121
  • Page 122 122
  • Page 123 123
  • Page 124 124
  • Page 125 125
  • Page 126 126
  • Page 127 127
  • Page 128 128
  • Page 129 129
  • Page 130 130
  • Page 131 131
  • Page 132 132
  • Page 133 133
  • Page 134 134
  • Page 135 135
  • Page 136 136
  • Page 137 137
  • Page 138 138
  • Page 139 139
  • Page 140 140
  • Page 141 141
  • Page 142 142
  • Page 143 143
  • Page 144 144
  • Page 145 145
  • Page 146 146
  • Page 147 147
  • Page 148 148
  • Page 149 149
  • Page 150 150
  • Page 151 151
  • Page 152 152
  • Page 153 153
  • Page 154 154
  • Page 155 155
  • Page 156 156
  • Page 157 157
  • Page 158 158
  • Page 159 159
  • Page 160 160
  • Page 161 161
  • Page 162 162
  • Page 163 163
  • Page 164 164
  • Page 165 165
  • Page 166 166
  • Page 167 167
  • Page 168 168
  • Page 169 169
  • Page 170 170
  • Page 171 171
  • Page 172 172
  • Page 173 173
  • Page 174 174
  • Page 175 175
  • Page 176 176
  • Page 177 177
  • Page 178 178
  • Page 179 179
  • Page 180 180
  • Page 181 181
  • Page 182 182
  • Page 183 183
  • Page 184 184
  • Page 185 185
  • Page 186 186
  • Page 187 187
  • Page 188 188
  • Page 189 189
  • Page 190 190
  • Page 191 191
  • Page 192 192
  • Page 193 193
  • Page 194 194
  • Page 195 195
  • Page 196 196
  • Page 197 197
  • Page 198 198
  • Page 199 199
  • Page 200 200
  • Page 201 201
  • Page 202 202
  • Page 203 203
  • Page 204 204
  • Page 205 205
  • Page 206 206
  • Page 207 207
  • Page 208 208
  • Page 209 209
  • Page 210 210
  • Page 211 211
  • Page 212 212
  • Page 213 213
  • Page 214 214
  • Page 215 215
  • Page 216 216
  • Page 217 217
  • Page 218 218
  • Page 219 219
  • Page 220 220
  • Page 221 221
  • Page 222 222
  • Page 223 223
  • Page 224 224
  • Page 225 225
  • Page 226 226
  • Page 227 227
  • Page 228 228
  • Page 229 229
  • Page 230 230
  • Page 231 231
  • Page 232 232
  • Page 233 233
  • Page 234 234
  • Page 235 235
  • Page 236 236
  • Page 237 237
  • Page 238 238
  • Page 239 239
  • Page 240 240
  • Page 241 241
  • Page 242 242
  • Page 243 243
  • Page 244 244
  • Page 245 245
  • Page 246 246
  • Page 247 247
  • Page 248 248
  • Page 249 249
  • Page 250 250
  • Page 251 251
  • Page 252 252
  • Page 253 253
  • Page 254 254
  • Page 255 255
  • Page 256 256
  • Page 257 257
  • Page 258 258
  • Page 259 259
  • Page 260 260
  • Page 261 261
  • Page 262 262
  • Page 263 263
  • Page 264 264
  • Page 265 265
  • Page 266 266
  • Page 267 267
  • Page 268 268
  • Page 269 269
  • Page 270 270
  • Page 271 271
  • Page 272 272
  • Page 273 273
  • Page 274 274
  • Page 275 275
  • Page 276 276
  • Page 277 277
  • Page 278 278
  • Page 279 279
  • Page 280 280
  • Page 281 281
  • Page 282 282
  • Page 283 283
  • Page 284 284
  • Page 285 285
  • Page 286 286
  • Page 287 287
  • Page 288 288
  • Page 289 289
  • Page 290 290
  • Page 291 291
  • Page 292 292
  • Page 293 293
  • Page 294 294
  • Page 295 295
  • Page 296 296
  • Page 297 297
  • Page 298 298
  • Page 299 299
  • Page 300 300
  • Page 301 301
  • Page 302 302
  • Page 303 303
  • Page 304 304
  • Page 305 305
  • Page 306 306
  • Page 307 307
  • Page 308 308
  • Page 309 309
  • Page 310 310
  • Page 311 311
  • Page 312 312
  • Page 313 313
  • Page 314 314
  • Page 315 315
  • Page 316 316
  • Page 317 317
  • Page 318 318
  • Page 319 319
  • Page 320 320
  • Page 321 321
  • Page 322 322
  • Page 323 323
  • Page 324 324
  • Page 325 325
  • Page 326 326
  • Page 327 327
  • Page 328 328
  • Page 329 329
  • Page 330 330
  • Page 331 331
  • Page 332 332
  • Page 333 333
  • Page 334 334
  • Page 335 335
  • Page 336 336
  • Page 337 337
  • Page 338 338
  • Page 339 339
  • Page 340 340
  • Page 341 341
  • Page 342 342
  • Page 343 343
  • Page 344 344
  • Page 345 345
  • Page 346 346
  • Page 347 347
  • Page 348 348
  • Page 349 349
  • Page 350 350
  • Page 351 351
  • Page 352 352
  • Page 353 353
  • Page 354 354
  • Page 355 355
  • Page 356 356
  • Page 357 357
  • Page 358 358
  • Page 359 359
  • Page 360 360
  • Page 361 361
  • Page 362 362
  • Page 363 363
  • Page 364 364
  • Page 365 365
  • Page 366 366
  • Page 367 367
  • Page 368 368
  • Page 369 369
  • Page 370 370
  • Page 371 371
  • Page 372 372
  • Page 373 373
  • Page 374 374
  • Page 375 375
  • Page 376 376
  • Page 377 377
  • Page 378 378
  • Page 379 379
  • Page 380 380
  • Page 381 381
  • Page 382 382
  • Page 383 383
  • Page 384 384
  • Page 385 385
  • Page 386 386
  • Page 387 387
  • Page 388 388
  • Page 389 389
  • Page 390 390
  • Page 391 391
  • Page 392 392
  • Page 393 393
  • Page 394 394
  • Page 395 395
  • Page 396 396
  • Page 397 397
  • Page 398 398
  • Page 399 399
  • Page 400 400
  • Page 401 401
  • Page 402 402
  • Page 403 403
  • Page 404 404
  • Page 405 405
  • Page 406 406
  • Page 407 407
  • Page 408 408
  • Page 409 409
  • Page 410 410
  • Page 411 411
  • Page 412 412
  • Page 413 413
  • Page 414 414
  • Page 415 415
  • Page 416 416
  • Page 417 417
  • Page 418 418
  • Page 419 419
  • Page 420 420
  • Page 421 421
  • Page 422 422
  • Page 423 423
  • Page 424 424
  • Page 425 425
  • Page 426 426
  • Page 427 427
  • Page 428 428
  • Page 429 429
  • Page 430 430
  • Page 431 431
  • Page 432 432
  • Page 433 433
  • Page 434 434
  • Page 435 435
  • Page 436 436
  • Page 437 437
  • Page 438 438
  • Page 439 439
  • Page 440 440
  • Page 441 441
  • Page 442 442

Hach Chlorine Sensor Användarmanual

Typ
Användarmanual