If the operator's safety is no longer ensured, the instrument is to be put
out of service and protected against use. The safety is no longer insu-
red, if the instrument:
• shows obvious damage
• does not carry out the desired measurements
• has been stored for too long under unfavourable conditions
• has been subjected to mechanical stress during transport.
The instrument may only be used within the operating ranges as speci-
fied in the technical data section.
Avoid any heating up of the instrument by direct sunlight to ensure per-
fect functioning and long instrument life.
The opening of the instrument for fuse replacement, for example, may
only be carried out by professionals. Prior to opening, the instrument has
to be switched off and disconnected from any current circuit.
The instrument may only be used under those conditions and for those
purposes for which it was conceived. For this reason, in particular the
safety references, the technical data including enviromental conditions
and the usage in dry environments must be followed.
When modifying or changing the instrument, the operational safety is no
longer ensured.
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