WIKA 233.50 - Manual (Page 7)

GB
2080268.06 02/2013 GB/D/F/E
WIKA operating instructions pressure gauge, model 2 per ATEX 7
2. Safety
current standards and directives, are capable of carrying out the work
described and independently recognising potential hazards.
2.3 Safety instructions for pressure gauges per ATEX
WARNING!
Non-observance of these instructions and their contents
may result in the loss of explosion protection.
WARNING!
It is imperative that the application conditions and safety
requirements of the EC-type examination certificate are
followed.
„
Pressure gauges must be earthed via the process
connection!
Specifications
Permissible temperatures
Ambient: Model 232/262 -40 ... +60 °C
Model 233/263 -20 ... +60 °C (glycerine filling)
-40 ... +60 °C (silicone oil filling)
Medium: The permissible medium temperature not only depends on
the instrument design, but also on the ignition temperature
of the surrounding gases, vapours or dusts. Both aspects
have to be taken into account.
For maximum permissible medium temperatures see table 1.
Attention! In the case of gaseous substances, the temperature may
increase due to compression warming. In these cases it may be neces-
sary to throttle the rate of change of pressure or reduce the permissible
medium temperature.