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8 Diagnosis, asset management and service
WIKA Operating Instructions - Process pressure transmitter CPT-2x
8 Diagnosis, asset management and service
8.1 Maintenance
If the device is used properly, no special maintenance is required in
normal operation.
In some applications, product buildup on the diaphragm can influence
the measuring result. Depending on the sensor and application, take
precautions to ensure that heavy buildup, and especially a hardening
thereof, is avoided.
The cleaning helps that the type label and markings on the instrument
are visible.
Take note of the following:
•
Use only cleaning agents which do not corrode the housings, type
label and seals
•
Use only cleaning methods corresponding to the housing protec-
tion rating
8.2 Cleaning - hygienic connection with
compression nut
The hygienic connection with compression nut can be disassembled
and the diaphragm cleaned.
The following graphic shows the structure:
4
3
2
1
5
6
7
Fig. 35: CPT-2x, structure of the hygienic connection with compression nut
1 Hexagon
2 Compression nut
3 Process fitting
4 Process module
5 Form seal for the measuring cell
6 O-ring seal for the process fitting
7 Diaphragm
To do so, proceed as follows:
1. Loosen compression nut and remove the pressure transmitter
from the welded socket
2. Remove the O-ring seal for the process fitting
3. Clean the diaphragm with brass brush and cleaning detergent
4. Loosen the hexagon and remove the process component from
the process fitting
Maintenance
Precaution measures
against buildup
Cleaning
Overview
Procedure
