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8 Diagnosis, asset management and service
VEGABAR 86 • Secondary Device for electronic differential pressure
48048-EN-220817
8.3 Exchanging the electronics module
If the electronics module is defective, it can be replaced by the user.
With SIL qualified instrument, only a respective electronics module
with SIL qualification must be used.
In Ex applications, only instruments and electronics modules with ap-
propriate Ex approval may be used.
Order the replacement electronics module through the agency
serving you. The electronics modules are adapted to the respective
sensor.
All application-specific settings must be entered again. That's why you
have to carry out a fresh setup after exchanging the electronics.
You can find detailed information on the electronics exchange in the
booklet "
Operating instructions for electronics module VEGABAR
series 80
".
After the new setup and the transfer of the parameterization date, you
have to verify the parameters. Only then, the instrument will be ready
for operation, again.
8.4 Exchange process module on version IP68
(25 bar)
On version IP68 (25 bar), the user can exchange the process module
on site. Connection cable and external housing can be kept.
Required tools:
•
Hexagon key wrench, size 2
Caution:
The exchange may only be carried out in the complete absence of
line voltage.
In Ex applications, only a replacement part with appropriate Ex ap-
proval may be used.
Caution:
During exchange, protect the inner side of the parts against contami-
nation and moisture.
Proceed as follows when carrying out the exchange:
1. Losen the fixing screw with the hexagon key wrench
2. Carefully detach the cable assembly from the process module
