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12. Trouble shooting
Warning!
The electrical installation must be checked only by expert personnel.
System out of work
Measuring system
outputs wrong values
Malfunction of sen-
sor
Relay flickering
26
Problem
Power supply inter-
rupted
Cable break
Defective fuse
Defective device
Incorrect calibration
Calibration shifted by
Abrasion or caking on
front end of sensor
Sensor not properly
connected
Sensor damaged
No 24 VDC supply on
sensor
Voltage drop on the
supply
line too highly
Hysteresis too small
Do not open, otherwise the warranty claims expire!
Cause
Check the power supply.
Check the connecting cables for a possible
break of a cable
Exchange fuse in the field housing
Contact SWR
Delete input signal correction, new cali-
bration
according to section 6
Delete input signal correction, new cali-
bration
according to section 6
Check cable
Replace sensor
Assure right power supply
Examine cable lengths on the basis of the
table
in chapter 4.5
Increase hysteresis, check effects caused
by external devices.
Measure
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