Maintenance And Cleaning Maintenance - WIKA TGT73.100 Betriebsanleitung

7. Faults / 8. Maintenance and cleaning
Faults
No output signal
EN
Constant
output signal
upon change in
temperature
Too high, constant
output signal
upon change in
temperature
Signal span too
small
For the replacement of the instrument, observe chapters 9
"Dismounting, return and disposal" and 5 "Commissioning, operation".
8. Maintenance and cleaning
8.1 Maintenance
The instruments are maintenance-free.
The indicator and switching function should be checked once or twice
every year. To do this, the instrument can be disconnected from the
process and checked using a temperature calibrator.
26
Causes
No supply voltage or cable
break
Transmitter incorrectly
connected
Electronics failure due to
too high supply voltage or
through external voltage
Supply voltage connected
the wrong way
(I = approx. 0 mA)
Transmitter defective
Electronics failure due to
too high supply voltage or
through external voltage
Supply voltage too low
Load too high
WIKA operating instructions model TGT73 (Ex)
Measures
Check voltage supply
and cables. Replace any
defective components found
Check connections; correct
connections if necessary
Return the measuring
instrument to the
manufacturer for repair
Check connection, and if
necessary, swap terminals
1 and 2
Return the measuring
instrument to the
manufacturer for repair
Return the measuring
instrument to the
manufacturer for repair
Rectify the supply voltage
stay within the max.
permissible load