Connecting Flame Arrestors; Electrical Connections; Inputs And Outputs - Siemens 7MB2531 Operating Instructions Manual

Connecting
4.5 Analyzers for operation in hazardous areas
4.5.2

Connecting flame arrestors

Installation of the flame arrestors
Sample gases which are occasionally explosive may only be connected to the Calomat 6F,
Calomat 62F and Oxymat 6F gas analyzers if the sample gas inlet and outlet are each provided
with one flame arrestor with adapter.
You can find information on the installation of the flame arrestors in the section Connection of
the flame arrestors (Page 21).
4.5.3

Electrical connections

4.5.3.1

Inputs and outputs

The analog inputs and outputs of the analyzers are not intrinsically-safe in the basic version.
For use in hazardous areas, all non-intrinsically safe inputs and outputs must be wired via Ex-
coupling relays so that no external voltages are present should the protective gas supply in the
device fail.
You must agree on these additional devices with the relevant local Ex specialist prior to startup.
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Compact Operating Instructions in accordance with EN 61010-1 and EN 60079-0
Compact Operating Instructions, 09/2018, A5E45779389002-01