Chapter 3 – Start-up and settings
UM-23100B-U User manual ATEQ F CLASS Page 26/90
9 If there is a drop in pressure, there is a small leak present. Check the test part and
the pneumatic connections, then start again.
9 If the pressure is stable, the part does not contain a small leak and the stabilisation
time is therefore too long. Progressively shorten and carry out cycles (wait one
minute between each cycle) until you see the appearance of a drop in pressure. This
indicates that the stabilisation time has become too short. Increase it slightly.
)Set this parameter using the method described in paragraph 2.3.
2.3.4. Test time
The test time depends on the programmed reject level and operation mode
In the dP/dt (Pa/s) mode, the variation in measured pressure is due to the drift in the
pressure drop. .
In the dP (Pa) mode, the pressure variation measured is the total of the pressure drop
over the whole test time. This mode is more unstable, but is more sensitive. The
instrument totals all the variations occurring due to variations in volume or temperature
over the whole test time.
)Set this parameter using the method described in paragraph 2.3.
2.3.5. Dump time
The instrument will as default propose a dump time of zero. This must be set by
carrying out several tests.
)Set this parameter using the method described in paragraph 2.3.
2.3.6. Pressure units
The different units are bar, mbar, PSI, Pa, kPa, Mpa.
) Set this parameter using the method described in paragraph 2.3.
2.3.7. Maximum fill
This function is used to set a maximum limit for the fill pressure. A warning is triggered
if this limit is exceeded.
When test time is infinite, the maximum fill pressure monitoring is inoperative.
Care should therefore be taken to avoid excess pressure being applied to the part
during the test.
) Set this parameter using the method described in paragraph 2.3.
2.3.8. Minimum fill
This function is used to set a minimum limit for the fill pressure. A warning is triggered if
this limit is not reached.
) Set this parameter using the method described in paragraph 2.3.
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