WIKA F73.100 Mode D'emploi page 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
No readability as a
result of fogged/iced
window
Pointer has fallen off
Filled instrument
leaking in the region
of the filling plug
Blisters in the
window (laminated
safety glass)
WIKA operating instructions models 73, 74, 75
Causes
Gas loss due to any
vibrations
Operate at temperatures
below the freezing point
No filling liquid in the
case
Too strong vibration or
shock loading
Ambient temperature
lower than -40 °C
Ambient temperature
too high
Measures
Remove the instrument and
replace
Wait for the instrument
temperature and the room
temperature to equalise
Replace with a thermometer
with filling liquid
Exchange the measuring
instrument with a
thermometer with filling
Exchange with an instrument
for ambient temperature
down to -50 °C
Isolate against radiated heat
EN
17