WIKA RLT-1000, Operating Instructions Manual

Page: 15 / 84

EN
WIKA operating instructions models RLT
14235428.01 07/2018 EN/DE/FR/ES
15
6. Faults
The following table contains the most frequent causes of
faults and the necessary countermeasures.
Faults Causes Measures
Level sensor cannot
be mounted at the
planned place on the
vessel
Process connection of
the level sensor does
not match the process
connection of the vessel
Modification of the vessel
Process connection at
the vessel defective
Rework the thread or replace
the screwed coupling
No signal, non-linear
or undefined signals
Electrical connection
incorrect
See chapter 5.4 “Electrical
connection”. Check
assignment with the aid of the
connection diagram.
Measuring chain or
4 ... 20 mA evaluation
electronics defective
Return to the manufacturer
PLC evaluation
defective
Functional check of the
level sensor with resistance
measuring instrument/
multimeter
Analogue transmitter
shows signal < 4 mA
or > 25 mA
Cable break or
measuring chain
damaged
Functional check of the level
sensor, replacement as
required
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”.
6. Faults