124945 01
02-10-2007
23
FAILURE
CAUSE
ACTION
The pressure is not
stabilising
The system may be
leaking.
The compressed
medium includes air.
If you have a hose in
the pressure loop -
the hose will expand
and give some
movement.
Adiabatic and
thermodynamic
effects are present
within all pressure
systems.
Check all
connections.
You may have to
adjust the pressure a
few times before the
pressure is stable
enough for
calibration.
Release air.
(See Notes page 13
or 17)
The effect will
disappear rapidly.
The effect will
disappear rapidly.
Note…
Always readjust the pressure after 5 – 10 minutes to allow
time for settling of above effects.
When you operate with high pressure the sensitivity of the
system is high with regard to temperature and movements.
5.1 Re-calibration
Depending on the conditions the pressure calibration set should be
checked with certain intervals by the factory or an authorized
standard laboratory and if necessary re-calibrated.