WIKA 630.20 - Manual (Page 6)

6 WIKA Operating instructions pressure gauges Model 6 with 831 per ATEX
2030660 12/2004 GB/D/F
GB
Operating Temperature
Ambient: -20 ... +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 use in accordance with 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) +85 °C
> 135 °C (T 4) +100 °C
> 200 °C (T 3) +100 °C
> 300 °C (T 2) +100 °C
> 450 °C (T 1) +100 °C
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 examination
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!
Part Model 612.20 Model 63X.50 Model 614.11 Model 634.11
Pressure connection Cu-alloy stainless steel Cu-alloy stainless steel
Capsule element Cu-alloy stainless steel Cu-alloy stainless steel
Sealing ring NBR FPM NBR FPM
(connection/capsule) (Buna rubber) (Viton) (Buna rubber) (Viton)
Materials (wetted parts)