3 conductivity measurement – Xylem ProLab 4000 MULTIPARAMETER BENCHTOP METER User Manual
Page 192
What to do if...
ProLab 4000
192
ba75646e02
01/2010
Warning [TempErr]
Warning [ISEErr]
16.3
Conductivity measurement
Conductivity measuring
cell was not recognized
Error message, Error
(invalid calibration)
CalClock
with red frame
Cond temp?
Cause
Remedy
– Temperature difference
between measurement and cali-
bration greater than 2 K.
– Adjust the temperature of
the test sample
Cause
Remedy
– Electrode voltage outside cali-
brated range
– Recalibrate
Cause
Remedy
– Measuring cell not connected
– Connect measuring cell
– Cable broken
– Replace measuring cell
Cause
Remedy
– Measuring cell contaminated
– Clean cell and replace it if
necessary
– Unsuitable control standard
– Use control standard,
0.01 mol/l KCl
Cause
Remedy
– Calibration interval expired
– Recalibrate the measuring
system
Cause
Remedy
– Test sample does not have the
correct temperature (max.
±
2
°C temperature difference from
calibration temperature)
– Adjust the temperature of the
test sample