FISCHER DE49 A Series, Operating Manual

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FISCHER Mess- und Regeltechnik GmbH Product and functional description | 2
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2 Product and functional description
2.1 Scope of delivery
• Digital differential pressure transmitter with external sensor
• User Manual
2.2 Intended use
The differential pressure transmitter DE49##A###BH00MW allows the meas-
urement of under-pressure, over-pressure and differential pressure in liquid and
gaseous media.
Fields of application include
• Tankers
• Fuelling systems
Explosion hazard area classification
The differential pressure transmitter DE49##A###BH00MW is suitable as an
electrical device for operation in potentially explosive areas.
• The unit must be installed in zone 1 or 2 or in zone 21 or 22 if the pressure
connections are connected to zone 0.
• The power circuit must satisfy the ignition protection category "Intrinsic
safety" category "ia".
Designation as per guideline 2014/34/EU.
II 1/2G Ex ia IIC T4 Ga/Gb
II 2D Ex ia IIIC T80°C Db
-10 °C ≤ Ta ≤ +60°C
2.3 Equipment versions
Options:
Cutting ring screw connection
Screw connection
Process connection
Type plate
Pressure compensation
ATEX marking
Wall bracket
Measured value display
M12 plug connection
Sensor
Fig. 1: Device model DE49 ## A