Operating instructions HE lite
© 2017 – Pfeuffer GmbH Revision 9 Page 25 of 28
Select the lowest menu item »OFF«
and switch off by pressing .
7.9 Reset brightness and contrast
From serial number 1170
contrast and the brightness of the display
can be adjusted by means of the software.
Thus it might happen that the display will
not be legible anymore. However, there is
a possibility to reset the factory settings.
For this purpose press the two arrow
keys simultaneously
press the key ON shortly .
8 Trouble shooting
Independent of the following notices the local safety regulations must be considered during
the operation. For the rest please refer to the relevant rules for prevention of accidents of
the employers liability insurance associations.
8.1 Fault finding – What to do, if?
Display indication: »< 9 %« or similar reading (depending on the product)
The sample is too dry or to moist. An electrical defect might also be possible. Repeat the
measurement by means of a sample of higher / lower moisture content. If the display
constantly indicates the message e.g. »< 9 %«, please get in contact with the service
department.
»Bat < 3.3 V«
The battery voltage is too low. Please insert new batteries.
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