Troubleshooting - HACH LANGE sensION Série Manuel D'utilisation

For battery replacement, refer to
tightly closed to maintain the IP67 enclosure rating.
Figure 11 Battery replacement

Troubleshooting

Refer to the following table for common problem messages or
symptoms, possible causes and corrective actions.
Figure 11. Make sure that the cover is
Error/Warning Description
Measurement out
of range.
Battery is low.
E1 Unstable reading
during a stability
measurement or
during calibration.
E2 Probe current:
exceeded upper
limit during
measurement ≥
250 nA.
E2 pH probes
sensitivity out of
range (accepted
values 70–105%).
Solution
• Insert the probe into the appropriate
standard and read again.
• 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.
Insert new batteries.
Make sure that the probe is properly
immersed in the sample.
• 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.
• Make sure that the correct probe is
connected to the meter.
• Connect a new probe.
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