3 | Assembly
FISCHER Mess- und Regeltechnik GmbH
8/20
BA_EN_NC57
3 Assembly
3.1 General
CAUTION
Risks connected to medium or system
The builder or operator of the tank system must implement suitable protective
measures for installation and maintenance work.
3.2 Process connection
• By authorized and qualified specialized personnel only.
• Assembly only with the delivered process connection.
• Note the maximum permissible operating pressure of 10 bar.
• Check that the device is compatible with the medium being measured.
As standard the device comes with a size ½ or 1 thread socket for mounting in
a welding sleeve. The device is suited only for vertical installation and, if pos-
sible, should be mounted at the highest point of the tank.
NOTICE! See also the information about the calibration in the section
"Start-up".
C
A
: Initial capacitance (probe exposed)
C
E
: End capacitance (probe covered)
10 mm
Calibration
C
A
Installation length
E
C
700 mm
Clip
Insulator
Fig. 4:
Assembly of the NC57
There must be at least 10 mm between the bottom of the tank and the end of
the rod due to the possible formation of sediment or in case the tank needs to
be moved (e.g. tank transportation).
The electrode rod must be mounted in parallel to the tank wall. In the case of in-
stallation lengths > 700 mm, the rod must be supported by insulated circlips at
intervals of 700 mm.
Pulsating impacts on the tank system can cause functional impairments on the
device.
