WIKA 212.20.100 Betriebsanleitung Seite 17

6. Faults
Faults
No pointer movement
despite change in
pressure.
After depressurisation,
the pointer remains just
above the zero point.
The pointer remains
outside the zero
point tolerance after
installation and
depressurisation.
Instrument outside the
accuracy class.
Vibration of the pointer.
Mechanical damage
(e.g. window, case).
Security tag damaged
(models PG21BP-x)
WIKA operating instructions pressure gauge, model 2, copper alloy
Causes
Movement blocked.
Pressure element defec-
tive.
Pressure port blocked.
Friction in the movement.
Instrument was overloaded. Replace instrument.
Material fatigue of the
pressure element.
Mounting error: Instrument
not mounted in nominal
position.
Transport damage (e.g.
non-permissible shock
loading).
Instrument was operated
outside of permissible
performance limits.
Vibrations in the appli-
cation.
Improper handling.
Impermissible loading at
the installation point (e.g.
fire and impacts)
Manipulation of the cali-
bration possible.
Measures
Replace instrument.
Tap lightly on the
case.
Check the mounting
position.
Replace instrument.
Check the obser-
vance of the operat-
ing parameters of the
application.
Replace instrument.
Use instrument with
case filling.
Replace instrument.
Send the instrument
for recalibration.
EN
17