EN
6. Faults / 7. Maintenance
14506034.01 03/2022 EN/DE/FR/ES
WIKA operating instructions model TC59-T (TEFRACTO-PAD
®
)
17
Faults
Causes
Measures
No signal/line breakage
Mechanical load too high or
overtemperature
Replace probe or measuring insert
with a suitable design
Erroneous
measured values (of
thermocouples)
Parasitic voltages (thermal
voltages, galvanic voltage) or
incorrect thermocouple cable type
Use the correct thermocouple
cable type
Signal interference
Stray currents caused by electric
fields or earth loops
Use of shielded connection cables,
increase in the distance to motors
and power lines
Earth circuits
Elimination of potentials, use of
galvanically isolated repeater
power supplies or transmitters
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.
