Operating instructions HE lite
Page 6 of 28 Revision 9 © 2017 – Pfeuffer GmbH
4.2 Equipment supplied
Check the equipment supplied with regard to completeness. Compare the following list to
the delivered parts. If something is not clear look up the delivery note first. It contains all
parts delivered by us. Missing parts must be reported to us immediately in written form.
Plastic housing with integrated
electronic measuring device and bottom
unit of the measuring cell
Top unit of the measuring cell with
11 ml filling measure
Batteries 1.5 V (round cell, size AA)
Carrying case with foam insert
For further spare parts and accessories please refer to chapter 10.1.
4.3 Environmental conditions
Attention! Protect the HE lite against direct sunshine and
extreme temperatures!
4.4 Connections/Power supply
The power is supplied by three 1.5 V batteries (round cells
size AA) commercially available. The battery voltage must be
> 3.3 V. Otherwise the HE lite switches off automatically! A
faulty measuring due to low battery is not possible. By
means of the option »battery« (refer to chapter 7.1) the
supply voltage can be checked. Prior to the measurement
the warning notice »Bat < 3.3 V« appears on the display.
The old battery then has to be replaced by a new one. For this purpose the battery box must
be opened at the bottom surface.
Pay attention to the »+« and »–« marking when replacing the batteries. Bend the nozzle of
the cover forwards after closing the battery box, until it locks into place.
Attention! A battery cannot be recharged! This can lead to a dangerous escape of acid.
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