ProMinent DULCOTEST CLT 1-mA-2 ppm Montage- Und Betriebsanleitung Seite 27

Error Possible cause
Sensor meas‐ Chlorite content is greater than the
ured value is upper measuring range limit.
arbitrary and
sensor current is
Distance between diaphragm/elec‐
greater than 20
trode is too great.
mA.
Sensor faulty.
Sensor meas‐ Pressure fluctuations in the meas‐
ured value is uring line.
unstable.
Reference electrode (2) defective.
Fig. 7: Probes
1 Working electrode.
2 Counter and reference electrode.
Information on Troubleshooting and Fault Elimination
1
2
A2420
Remedy
Check system, clear faults.
Repeat calibration.
Screw the diaphragm cap to the stop
Return sensor for regeneration.
Check the installation site and change as
necessary. Change the process if neces‐
sary.
Check whether the reference electrode
(2) is silvery-white instead of brownish-
grey or yellowish-green. If it is silvery-
white, the reference electrode (2) must
be replaced by ProMinent.
27