WIKA 632.51+8xx - Manual (Page 6)

WIKA Operating instructions pressure gauges Model 63.51 with 831 per ATEX 6
1) The permissible uppper ambient temperature for the electrical components is determined by
the electrical connection values and the ignition temperature of the ambient gases, vapours and
dusts. Therefore the maximum permissible ambient temperatures specified in the EC-type exami-
nation certificates for slot-type sensors and SN sensors must be observed as well. The lower of
these two values is to be considered the maximum permissible ambient temperature!
Materials (wetted parts)
Pressure connection with pressure chamber: Stainless steel
Pressure element (capsule element): Stainless steel
Sealing ring between socket and capsule element: PTFE
11059738
11/
008
GB/D/F
GB
Operating Temperature
Ambient: -0 … +60 °C
Attention: Footnote 1) under table 1 must be absolutely taken into account!
Medium: see table 1
Attention! With gaseous substances the temperature may increase as a result
of the compression temperature. In such cases the pressure change rate has to
be slowed down resp. the permissible medium temperature has to be reduced.
Table 1: Permissible medium temperature (only mechanical part)
3. Technical data and intended use
Ignition temperature of Permissible maximum medium temperature
the ambient atmosphere (in the pressure system)
(temperature class)
> 85 °C (T 6) +70 °C
> 100 °C (T 5) +80 °C
> 135 °C (T 4) +80 °C
> 00 °C (T 3) +80 °C
> 300 °C (T ) +80 °C
> 450 °C (T 1) +80 °C