Siemens ULTRAMAT 23, Manual, Page: 79 / 244

Commissioning
6.2 Safety instructions
ULTRAMAT 23
Manual, 3/2016, A5E37100388-003
79
CSA Class I Div. 2 and ATEX Zone 2
The following safety and warning information applies to analyzers (special versions) which
are operated in accordance with CSA Class I Div. 2 (hazardous locations) and ATEX Zone 2:
WARNING
Potentially explosive atmosphere
Do not open, service or repair in an area in which a potentially explosive atmosphere may
be present.
ATEX Zone 2
The following applies to devices (special versions) which are operated according to ATEX in
Ex zone 2:
DANGER
Explosion hazard
The ULTRAMAT 23 gas analyzers for use in Ex zone 2 must be installed in an appropriate
enclosure. This enclosure must comply with the requirements of EN 60079-15 and must be
designed for all ambient conditions which can occur during operation.
The maximum ambient temperature is 50 °C.
Suitable measures must additionally be applied to ensure that
•
the generation of potentially explosive gas mixtures inside the analyzer does not exceed
the level of Zone 2
• interferences cannot lead to a deviation of more than 40% from the rated voltage.
Note
In the case of device versions for use in Ex zone 2, it is also essential to observe the 'ATEX
compact operating instructions for rack units of Series 6' (A5E37888334)!