Analyzers In Hazardous Areas - Siemens ULTRAMAT 23 Series Equipment Manual

Note
Disconnecting means
Die power supply cable also serves as the disconnecting means.
Make sure that the cable is
• clearly recognizable
• easy to reach.
The cable length must not exceed 3 m.
5.1.2

Analyzers in hazardous areas

Explosion hazard
If a flammable or ignitable atmosphere exists, plugs must never be disconnected or lamps/
fuses replaced when the analyzer is supplied with power.
ATEX Zone 2
The following applies to devices (special versions) which are operated according to ATEX in Ex
zone 2:
Explosion hazard
The ULTRAMAT 23 gas analyzers for use in Ex zone 2 must be installed in a lockable enclosure
with IP54 degree of protection. This enclosure must comply with the requirements of
EN 60079-15 and must be designed for all ambient conditions which can occur during
operation. This enclosure only be opened using a tool (e.g. a key).
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
• interferences cannot lead to a deviation of more than 40% from the rated voltage.
ULTRAMAT 23
Equipment Manual, 04/2022, A5E37100388-012
DANGER
DANGER
level of Zone 2
Connecting
5.1 Safety instructions
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