FISCHER DE23 Series, Руководство по эксплуатации

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3 | Assembly and Starting Operation FISCHER Mess- und Regeltechnik GmbH
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3 Assembly and Starting Operation
3.1 Generalities
The device is designed for installation onto flat assembly plates. For screw con-
nection to the assembly plate, the device features four assembly bores on its
back, which can be used for Ø 3.5 mm tapping screws.
Optionally, the device can be supplied with a wall mounting plate or an adapter
element for assembly with a mounting rail.
Ex-works, the device is set for vertical installation. Any installation position is
possible.
3.2 Process connection
• By authorized and qualified specialized personnel only.
• The pipes need to be depressurized when the instrument is being connec-
ted.
• Appropriate steps must be taken to protect the device from pressure surges.
• Check that the device is suitable for the medium being measured.
• Maximum pressures must be observed (cf. Tech. data)
CAUTION
Do not blow into the pressure connections.
This may damage the sensor.
The pressure lines must be kept as short as possible and installed without any
tight bends to avoid delays.
1 channels
2 channels
+
P1
+ +
P1 P2
The process connections are marked with (+) and (-) symbols on the device.
The pressure lines must be mounted according to these symbols.
1. Differential pressure measurement
Higher pressure
lower pressure
2. Pressure measurement
Pressure
open
3. Under-pressure measurement
open
Under-pressure
3.3 Electrical connections
• By authorized and qualified specialized personnel only.
• When connecting the unit, the national and international electro-technical
regulations must be observed.
• Disconnect the system from the mains, before electrically connecting the
device.
• Install the consumer-adapted fuses.
• Do not connect the connector if strained.