Compact Operating Instructions in accordance with EN 61010-1 and EN 60079-0
46 A5E45779389002-01, 09/2018
Differential pressure monitoring
Only applies to analyzer version Ex p with leakage compensation.
The sample gas pressure must be present in the analyzer (within the specified limits, see Technical specifications for
operation in hazardous areas (Page 42)) in a fail-safe manner. If only an operationally reliable supply is available, an
additional differential pressure switch must be provided (see also point 5 in "Special conditions" of the EC type examination
certificate).
If flame arrestors are fitted, differential pressure switches and/or relative pressure sensors must be connected via a T-fitting
between the sample gas inlet couplings and the flame arrestors (see Auto-Hotspot and assembly diagram for the version
Ex p with leakage compensation Connection diagram for the versions Ex px with leakage compensation (Page 23)).
Accessories required for differential pressure monitoring:
Differential pressure switches
Order No. Wetted parts mate-
Switching point
For corrosive and non-corrosive sample
7MB8000-5AA Stainless steel
Settable in the range -20 to +20 hPa
Valid for the following analyzer versions:
OXYMAT 6 / CALOMAT 6
The design of parts wetted by the sample gas must meet the application requirements and should be selected accordingly.
Applies to all analyzer versions.
Note: The relays must be installed in a separate Ex e enclosure!
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