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Operating Menu
3.2
Operating instructions
Display
Hi
Lo
btLo
3.3
Error messages
Display
Meaning
E 27 / E
Light absorption too great. Cause e.g. dirty optics.
28 / E 29
E 10 / E 11
Calibration factor outside the permissible range.
E 20 / E 21
Detector receives too much light.
E 23 / E
Detector receives too much light.
24 / E 25
E 22
The battery power was too low during the measurement.
Replace the battery.
E 70
Cl: Factory calibration not OK / deleted
E 71
Cl: User calibration not OK / deleted
16
Meaning
Measuring range exceeded or turbidity too
high.
Measuring range undershot.
Change the batteries immediately, continuing
work impossible.
Battery voltage for background lighting too low,
although measurement is possible.
With a method adjusted by the user, when the
result is shown in the display, an arrow appears
[Cal] position.
in the
A1856
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