WIKA 233.50 - Manual (Page 8)

GB
2080268.06 02/2013 GB/D/F/E
WIKA operating instructions pressure gauge, model 2 per ATEX 8
Temperature class of the
ambient atmosphere
(ignition temperature)
Maximum permissible medium
temperature (in the measuring system)
Models 232
(dry gauges)
Models 233
(liquid-filled gauges)
T 6 (85 °C < T ≤ 100 °C) +70 °C +70 °C
T 5 (100 °C < T ≤ 135 °C) +85 °C +85 °C
T 4 (135 °C < T ≤ 200 °C) +120 °C +100 °C
T 3 (200 °C < T ≤ 300 °C) +185 °C +100 °C
T 2 (300 °C < T ≤ 450 °C) +200 °C +100 °C
T 1 (T > 450 °C) +200 °C +100 °C
2.4 Special hazards
WARNING!
For hazardous media such as oxygen, acetylene, flamma-
ble or toxic gases or liquids, and refrigeration plants,
compressors, etc., in addition to all standard regulations,
the appropriate existing codes or regulations must also be
followed.
For additional important safety instructions see chapter "2.3 Safety
instructions for pressure gauges per ATEX".
WARNING!
Residual media in dismounted pressure gauges can result
in a risk to persons, the environment and equipment.
Take sufficient precautionary measures.
Table 1: Permissible medium temperature
2. Safety