WIKA TGT73 - Manual (Page 20)

GB
14028755.02 08/2012 GB/D/F/E
20 WIKA operating instructions model TGT73
9.2 Cleaning
CAUTION!
■ Clean the instrument with a moist cloth.
■ Wash or clean the dismounted instrument before
returning it in order to protect personnel and the
environment from exposure to residual media.
■ Residual media in the dismounted gas-actuated
thermometer can result in a risk to personnel,
the environment and equipment. Take sufficient
precautionary measures.
For information on returning the instrument see chapter
11.2 "Return".
10. Faults
Faults Causes Measures
No output signal No power supply or
cable break
Check voltage supply
and cables. Replace any
defective components found
Transmitter incorrectly
connected
Check connections; correct
connections if necessary
Electronics failure due to
too high power supply or
through external voltage
Return the instrument to the
manufacturer for repair
Constant output
signal upon change in
temperature
Power supply connected
the wrong way
(I = approx. 4.5 mA)
Check connection, and if
necessary, swap terminals
1 and 2
Transmitter fault Return the instrument to the
manufacturer for repair
Too high, constant
output signal upon
change in temperature
Electronics failure due to
too high power supply or
through external voltage
Return the instrument to the
manufacturer for repair
Signal span too small Power supply too low Rectify the power supply
Load too high Stay within the max.
permissible load
9. Maintenance and cleaning / 10. Faults