What to do if...
Multi 3320
88
ba77053e04
07/2018
14.2 ISE
Error message
OFL
Obviously incorrect
measured values
Error message
Error
(invalid
calibration)
Warning
[TpErr]
Warning
[ISEErr]
Cause
Remedy
– Measuring range exceeded
– Dilute test sample
Cause
Remedy
– Electrode not connected
– Connect the electrode
– Cable broken
– Replace the electrode
Cause
Remedy
ISE electrode:
– Moisture in the plug
– Dry plug
– Electrode obsolete
– Replace the electrode
– Electrode unsuitable for the range to
be measured
– Use a suitable electrode
– Electrode not suitable for the
selected ion
– Use a suitable electrode or
select a suitable ion
– The gas-sensitive electrode NH 500
was calibrated with the
Ion type
NH4
setting
– Select the following settings:
Ion type
= ION,
Valency
= -1
– Socket damp
– Dry socket
Calibration procedure:
– Calibration standards do not have
the correct temperature (max.
±
2 °C
temperature difference)
– Adjust the temperature of the
calibration standards
Cause
Remedy
– Temperature difference between
measurement and calibration
greater than 2 K.
– Adjust the temperature of the
test sample
Cause
Remedy
– Electrode voltage outside calibrated
range
– Recalibrate
