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4
Installation procedure
Installation and Use
WARNING!
Use of the device in mines or underground systems is forbidden. Use in an
environment not envisaged by the standard may cause serious injury and
damage.
The following environmental conditions must be complied with
during functions:
temperature: from +5 to +35 °C;
relative humidity: 0 – 95 % (non condensing).
WARNING!
Do not cover or obstruct the ventilation slots on the top part of the PHD-4 and
the rear discharge duct Obstruction could cause damage to the PHD-4 or to
external components.
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PHD-4 Portable Helium Detector User Manual / 87-900-120-01 ( F)
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