Faults - WIKA DiwiTherm TR75 Betriebsanleitung

8. Faults

8. Faults
Faults
GB
The battery has less than 2.7 V
Error message
No signal/ line breakage
Measurement signal -
"comes and goes"
Erroneous measured values and
response times too long
Erroneous measured values and
response times too long
Corrosion
Moisture or media fluid in the
housing
CAUTION!
If deficiencies cannot be eliminated by means of the measures listed above, shut
down the instrument immediately, and ensure that pressure and/or signal are no
longer present, and secure the instrument from being put back into operation
inadvertently. In this case, contact the manufacturer.
If a return is needed, please follow the instructions given in chapter "9.2 Return".
14
Causes
The battery has less than 2.7 V
Mechanical load too high or
overtemperature
Cable break in connecting cable
or loose contact caused by
mechanical overload
Incorrect mounting orientation,
e.g. too low installation depth or
too high heat dissipation
Deposits on the sensor or
thermowell
Composition of the medium
not as expected or modified
or wrong thermowell material
selected
No thermowell used (the cable
version is not suitable). No or
faulty sealing used between
extension neck and thermowell.
WIKA operating instructions DiwiTherm
Measures
Contact the manufacturer
Replace probe or measuring
insert with a suitable design
Replace probe or measuring
insert with a suitable design,
for example a thicker conductor
cross-section
The temperature-sensitive area
of the sensor must be inside the
medium, and surfaces must be
isolated.
Remove deposits
Analyse medium and then se-
lect a more-suitable material or
replace thermowell regularly
Contact the manufacturer,
Send the instrument back (For
information on returning, see
chapter "9.2 Return").
, model TR75
®