18
CIT 400
pressure and level
6. Troubleshooting
DANGER
Danger of death from electric shock
-
If malfunctions cannot be resolved, put the device out of service (proceed
according to chapter 9 up to 11)
In case of malfunction, it must be checked whether the device has been correctly installed me-
chanically and electrically. Use the following table to analyse the cause and resolve the mal-
function, if possible.
Error messages Possible cause
Error corrective
Err
- cable break between sensor on
analogue input
- mechanical sensor damage and there-
fore interruption
- sensor damage
-> current on analogue input below 3.3 mA
- check cable for damage
- exchange cable or sensor if
necessary
Err
- sensor electronics damaged
- supplying too high current
- cable short circuit or connection box
causes current higher than 22 mA on
analogue input due to humidity or
damaged terminal clamps.
-> current on analogue input higher than
22 mA
- check cable for damage
- exchange cable or sensor if
necessary
Heavy fluctua-
tion of meas-
urement values
- cable damaged
- contacting problems due to cable
extension
- connection box or similar
- humidity in the cable
- sensor damage
- check all contacts and
connections
- replace filter on cable end
- check connection box for
humidity ingress
