FISCHER DE43, Руководство по эксплуатации

Страница: 9 / 28

FISCHER Mess- und Regeltechnik GmbH Assembly | 3
BA_EN_DE43 9 / 28
3 Assembly
3.1 General
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 delivered with a wall-mounting plate. This is also
available as accessory.
At the factory, the device is calibrated for vertical installation, but the installation
position is arbitrary.
The enclosure protection type IP 65 is only guaranteed, if a suitable power sup-
ply cable is used (see accessories).
If the device is intended for outdoor use, we recommend permanent protection
against against constant rain or snow, however at the least a sufficiently dimen-
sioned canopy.
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)
The pressure lines must be installed on a gradient so that no water pockets for
gas measurements can be created. If the required gradient is not reached, wa-
ter filters need to be installed at suitable points.
The pressure lines must be kept as short as possible and installed without any
tight bends to avoid delays.
The process connections are marked with (+) and (-) symbols on the device.
The pressure lines must be mounted according to these symbols.
CK Screw connection Pneumatic Plug connection
Channel 2 Channel1
+ +
Channel 2 Channel1
+ +
Differential pressure Pressure Under-pressure
+
higher pressure
lower pressure
+
Pressure
open
+
open
Under-pressure
Fig. 7: Process connection
The process connections are suitable for hoses made of various materials (PA,
PU, Teflon, etc.) with the following dimensions:
Process connection for Hose 8/6 Hose 6/4
Outer diameter 8 mm 6 mm
Inner diameter 6 mm 4 mm