Siemens ULTRAMAT 6 Series Compact Operating Instructions page 27

Explosion hazard
The gas analyzers for use in Ex zone 2 must be installed in a lockable enclosure. This enclosure
must comply with the requirements of EN/IEC/UL/CSA 60079-0/60079-7 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 ambient air temperatures can be found in the section Technical specifications (Page 51).
Suitable measures must additionally be applied to ensure that
• The generation of potentially explosive gas mixtures inside the analyzer does not exceed
• Interferences cannot lead to a deviation of more than 40 % from the rated voltage.
• You only set up the devices in areas with pollution degree 2 or better according to IEC
Series 6 and ULTRAMAT 23
Compact Operating Instructions, 01/2024, A5E45779144002-AB
DANGER
the specifications of Zone 2.
60664-1.
Assembly/installation
3.3 Analyzers in hazardous areas
27