Faults - WIKA RLT-1000 Betriebsanleitung

6. Faults

6. Faults
The following table contains the most frequent causes of
faults and the necessary countermeasures.
Faults
Level sensor cannot
be mounted at the
planned place on the
vessel
No signal, non-linear
or undefined signals
Analogue transmitter
shows signal < 4 mA
or > 25 mA
CAUTION!
Physical injuries and damage to property and the
environment
If faults cannot be eliminated by means of the listed
measures, the instrument must be taken out of operation
immediately.
▶
Ensure that there is no longer any pressure present and
protect against being put into operation accidentally.
▶
Contact the manufacturer.
▶
If a return is needed, please follow the instructions given
in chapter 8.2 "Return".
WIKA operating instructions models RLT
Causes
Process connection of
the level sensor does
not match the process
connection of the vessel
Process connection at
the vessel defective
Electrical connection
incorrect
Measuring chain or
4 ... 20 mA evaluation
electronics defective
PLC evaluation
defective
Cable break or
measuring chain
damaged
Measures
Modification of the vessel
Rework the thread or replace
the screwed coupling
See chapter 5.4 "Electrical
connection". Check
assignment with the aid of the
connection diagram.
Return to the manufacturer
Functional check of the
level sensor with resistance
measuring instrument/
multimeter
Functional check of the level
sensor, replacement as
required
EN
15