WIKA 432.50.100 Mode D'emploi page 6

2. Safety
2.3 Safety instructions for pressure gauges with ATEX approval
GB
Technical data
Operating Temperature
Ambient: -0 ... +60 °C
Attention: Footnote 1) under table 1 must be absolutely taken into account!
Medium: see table 1
Attention! In the case of gaseous substances, the temperature may increase due
to compression warming. In these cases it may be necessary to throttle the rate of
change of pressure or reduce the permissible temperature of the pressure medium.
Table 1: Permissible medium temperature (only mechanical part)
Temperature Class of the
ambient atmosphere
(ignition temperature)
T 6 (> 85 °C)
T 5 (> 100 °C)
T 4 (> 135 °C)
T 3 (> 00 °C)
T  (> 300 °C)
T 1 (> 455 °C)
1) The permissible upper 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!
) The higher values apply only to special versions with higher permissible media temperatures.
6
WARNING!
Non-observance of these instructions and their contents may
result in the loss of explosion protection.
It is imperative that the application conditions and safety
requirements of the EC-type examination certificate are
followed.
(with inductive contacts in safety pattern version
Models 831.XX-SN up to -40 °C)
Maximum permissible medium
temperature (in the pressure system)
Models 4X.1
and 4X.0
+70 °C
+85 °C
+100 °C
+100 °C
+100 °C
+100 °C
WIKA Operating instructions pressure gauges Model 4 with 831 per ATEX
Models 43X.50,
43X.30 and 43X.X6
+70 °C
+85 °C
+100 or +10 °C )
)
+100 or +185 °C
+100 or +00 °C )
+100 or +00 °C )
Model 43X.55
+70 °C
+85 °C
+100 °C
+100 °C
+100 °C
+100 °C