38
9 Error and system messages
Error messages during measurement
Error message during automatic alignment
Display
Cause
Remedy
Battery voltage low,
the function can still be guaranteed
only for a short time.
Insert new battery
Battery is used up
Insert new battery
During mains operation: incorrect voltage Test power supply unit, replace if necessary
No display
or muddled char-
acters, device
does not respond
to keys being
pressed
Battery voltage too low
Insert new battery
During mains operation: power supply
unit defective or incorrect voltage/polarity
Test power supply unit, replace if necessary
System error
Remove battery or power supply unit, wait briefly
before reconnecting
Device error/device defect
Send in device for repair
Measuring range exceeded
Check whether the measured value is above the
permissible measuring range of the sensor
Measuring cell is defective
Send in device for repair
Measuring range not reached
Check whether the measured value is below the
permissible measuring range of the sensor
Measuring cell is defective
Send in device for repair
System error
Send in device for repair
Measuring range exceeded or not
reached by a significant margin
Check whether the measured value is within the
permissible measuring range of the sensor
Display value cannot be calculated,
measuring range or input value
exceeded
Check measuring range
Display value cannot be calculated,
measured values too unstable
Wait for signal control of the device
Preset calibration interval elapsed
Calibrate device
Last calibration invalid
Display
Cause
Remedy
Relative cell constant too large
Determined relative cell constant
must not be > 1.2
Relative cell constant too small
Determined relative cell constant
must not be < 0.8
Solution in incorrect range
Incorrect reference solution, way beyond
the tolerance
Incorrect temperature
Reference solution outside the permissible tem-
perature (0.0 to 34.0°C, or 0.0 to 27.0°C with
reference solution 111.8 mS/cm)
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