WIKA TG53 Manual De Instrucciones página 17

6. Faults
WARNING!
Physical injuries and damage to property and the
environment caused by hazardous media
Upon contact with hazardous media (e.g. oxygen, acetylene,
flammable or toxic substances), harmful media (e.g. corrosive,
toxic, carcinogenic, radioactive), and also with refrigeration
plants and compressors, there is a danger of physical injuries
and damage to property and the environment.
Should a failure occur, aggressive media with extremely high
temperature and under high pressure or vacuum may be
present at the instrument.
▶
For these media, in addition to all standard regulations,
the appropriate existing codes or regulations must also be
followed.
For contact details see chapter 1 "General information" or the
back page of the operating instructions.
Faults
The pointer does
not move on rising
temperature
Pointer has fallen off
Filled instrument
leaking in the region
of the filling plug
Blisters in the
window (laminated
safety glass)
Not possible to
screw the instrument
into the thermowell
WIKA operating instructions models TG53, TG54
Causes
Break in the bimetal
possibly due to vibration
Too strong vibration or
shock loading
Ambient temperature
lower than -40 °C
Ambient temperature
too high
Incorrect thread or stem
diameter or thermowell
stem too long
Measures
Remove the instrument and
replace
Exchange the measuring
instrument with a
thermometer with filling
Exchange with an
instrument for ambient
temperature up to -50 °C
Isolate against radiant heat
Remove the instrument and
replace
Exchange thermometer or
thermowell for proper size
EN
17