Pr
o
Minent
®
42
Measured value of sensor
1) Chlorine concentration exceeds
Check the whole system, remedy
is arbitrary and sensor current
the upper limit of measuring range
fault and then calibrate sensor
is greater than 20 mA**
(see Chapter 8.2)
2) Distance between working
Screw the membrane cup tightly
electrode and membrane too great
onto the electrode shaft
3) Sensor defective
Return sensor to ProMinent
Measured value of sensor
1) Pressure fluctuations in sampling
Check installation position and
is not stable
line
change the process if necessary
2) Reference electrode defective*
Return sensor to ProMinent for
regeneration
* When the reference electrode turns shiny silver or white it must be regenerated.
Brown-grey or yellow green coloration is normal.
** The DULCOMETER
®
D1C can be used to display the sensor current when the sensor is built into the system.
For this enter the complete operating menu (see DULCOMETER
®
D1C, chlorine Operating Instructions,
Chapter 8).
Access the “Calibrating chlorine” settings menu and only read the mA-value measured under “Zero point”.
Do not finish the zero point calibration but leave the menu by pushing the branch back button.
Troubleshooting
Fault
Possible Cause
Remedy
BA_DT_106_12_09_4spr.p65
15.12.2009, 10:26 Uhr
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