Siemens ULTRAMAT 6F Руководство по эксплуатации - Страница 46
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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
For corrosive and non-corrosive sample
gases
Accessories
Valid for the following analyzer versions:
Flame inhibitor
Device
OXYMAT 6 / CALOMAT 6
CALOMAT 62
The design of parts wetted by the sample gas must meet the application requirements and should be selected accordingly.
Applies to all analyzer versions.
Isolating relay
Order No.
Coil power supply
Contacts
Note: The relays must be installed in a separate Ex e enclosure!
Isolating transformer
Order No.
Output signal (safety)
46
Order No.
Wetted parts mate-
rials
7MB8000-5AA
Stainless steel
1.4571
Material
Stainless steel
Hastelloy
Stainless steel
Hastelloy
7MB8000-4AB
110 V AC
8 NO contacts
7MB8000-3AB
18.8 V / 107 mA / 503 mW
Compact Operating Instructions in accordance with EN 61010-1 and EN 60079-0
Switching point
Settable in the range -20 to +20 hPa
Order No.
7MB8000-6CA
7MB8000-6CB
7MB8000-6DA
7MB8000-6DB
7MB8000-4AA
240 V AC
8 NO contacts
A5E45779389002-01, 09/2018