FISCHER Mess- und Regeltechnik GmbH
Assembly | 3
BA_EN_DE85
9/28
3 Assembly
3.1 General
The device is designed for mounting onto level walls and mounting plates. To
this end, the device has two installation boreholes on the side. Alternatively, an
installation test can be ordered for installing the mounting rail.
Plug screw
T10
Unlocking
Installation borehole 1
Installation borehole 2
Locking catch
Fig. 6:
Protection class IP65
(a) Open the housing
To open the housing, first remove the screw plug (if present). Then the housing
can then be unlocked. To do this, use a suitable slotted screwdriver to press the
locking lug at the designated point.
(b) Closing the housing
Close the cover until the latch clicks into place. Protection class IP54 is
achieved with the snap-in connection alone.
NOTICE! The enclosed screw plug must be used to achieve IP65.
Please contact the manufacturer if the screw is missing. It is a special screw for
thermoplastics. Protection class IP65 cannot be achieved with another screw as
a replacement.
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 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.
1.
Differential pressure measurement
Higher pressure
lower pressure
2.
Pressure measurement
Pressure
open
