WIKA STW15 Manual De Instrucciones página 18

6. Faults
Faults
Wrong measured value
display
EN
The instrument does
not switch off at the
desired temperature
Instrument inoperable
Actual value pointer
below the start of the
measuring range, no
reaction to temperature
change
Monitored plant goes
into error mode
18
Causes
Influence of the ambient
temperature on case and/or
measuring line too strong
Zero point offset
Probe not completely
immersed into the medium
being measured
Measuring instrument used
outside the specification
(defective micro switch)
Wrong measured value
display
Wrong electrical connection
Loose electrical connection
Cable break or short circuit
Leakage in the measuring line
Measuring line break
Measuring line break
Temperature of the medium
to be monitored too high
Measures
Re-position the case and/or
measuring line or isolate them from
the influence of cold/heat effects from
the outside
Send the measuring instrument back
to the manufacturer
Correct mounting situation
Send the measuring instrument back
to the manufacturer
Send the measuring instrument back
to the manufacturer
Correct the connection
Check all electrical connections
Check power supply
Send the measuring instrument back
to the manufacturer
Send the measuring instrument back
to the manufacturer
Send the measuring instrument back
to the manufacturer
Eliminate the cause of the
overheating, restore the safe
operating condition, STW15 resets
automatically
WIKA operating instructions model STW15