Error Messages - Hach sensION+ MM150 Manual

8. Error messages

Display
E1
E2
E3
E4
E5
E6
sensION+ MM150 HACH 0710.indd ANG:23 sensION+ MM150 HACH 0710.indd ANG:23
Caused by
Measurement out of range: pH, mV, CE, TDS or
Temperature.
Low battery charge.
Unstable reading during a stability measurement
or during calibration.
100-second timeout.
- pH electrode sensitivity out of range. Accepted
values 70-105%
- The difference between the conductivity cell
constants obtained > 30%
- Asymmetry potential out of range.
Accepted values ± 58 mV.
- During calibration,
he cell constant obtained < 0.05 cm
Buffer solution not recognised.
Same buffer solutions.
The calibration solutions have different
temperatures.
Check sensor.
Replace the batteries.
Check that the sensor is properly immersed in
the sample.
Connect a new sensor.
Connect a new sensor.
-1
Check sensor.
Check buffer solution.
Check sensor.
Check buffer solution.
Adjust the calibration solutions to the same
temperature.
Action
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7/9/10 13:03:05 7/9/10 13:03:05