Error/
Warning
Description Solution
E2 Probe current:
exceeded upper
limit during
measurement ≥
250 nA.
Examine the probe:
•
Clean the probe and the membrane.
• Make sure that there are no air bubbles in
the membrane.
• Disconnect the probe and then connect
the probe again.
• Connect a different probe to verify if
problem is with probe or meter.
pH probes
sensitivity out of
range (accepted
values 70–105%).
Make sure that the correct probe is connected
to the meter.
Connect a new probe.
During calibration,
the difference
between the
constants gets >
30%.
Insert the probe into the appropriate standard
and read again.
Examine the probe:
• Clean the probe and the membrane.
• Make sure that there are no air bubbles in
the membrane.
• Disconnect the probe and then connect
the probe again.
• Connect a different probe to verify if
problem is with probe or meter.
Connect a new probe.
Error/
Warning
Description Solution
E3 During calibration,
the cell constant
gets < 0.05 cm
-1
.
Insert the probe into the appropriate standard
and read again.
Examine the probe:
•
Clean the probe and the membrane.
• Make sure that there are no air bubbles in
the membrane.
• Disconnect the probe and then connect
the probe again.
• Connect a different probe to verify if
problem is with probe or meter.
Slope out of range
(accepted values ±
58 mV).
Connect a new probe.
E4 Buffer solution not
recognized.
Examine the probe:
• Clean the probe and the membrane.
• Make sure that there are no air bubbles in
the membrane.
• Disconnect the probe and then connect
the probe again.
• Connect a different probe to verify if
problem is with probe or meter.
Examine the buffer solution:
• Make sure that the buffer used matches
the buffer specified in configuration.
• Replace the buffer solution.
• Make sure of the temperature
specification in configuration.
Salinity cannot be
calculated TC=0
Modify TC
English 13
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