Maintenance - WIKA TEFRACTO-PAD TC59-T Manual De Instrucciones

6. Faults / 7. Maintenance
Faults
No signal/line breakage
Erroneous
measured values (of
thermocouples)
Signal interference

7. Maintenance

For contact details, please see chapter 1 "General information" or the back
page of the operating instructions.
7.1 Maintenance
These thermocouples are maintenance-free.
Repairs must only be carried out by the manufacturer.
7.2 Cleaning
The cleaning of the instrument depends on the version and application. Please contact your
WIKA contact person for detailed information.
WIKA operating instructions model TC59-T (TEFRACTO-PAD
Causes
Mechanical load too high or
overtemperature
Parasitic voltages (thermal
voltages, galvanic voltage) or
incorrect thermocouple cable type
Stray currents caused by electric
fields or earth loops
Earth circuits
Measures
Replace probe or measuring insert
with a suitable design
Use the correct thermocouple
cable type
Use of shielded connection cables,
increase in the distance to motors
and power lines
Elimination of potentials, use of
galvanically isolated repeater
power supplies or transmitters
)
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EN
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