Preamble
UM-18400E-U ATEQ F580 User manual Page 9/168
5. DIRECT MEASUREMENT, PRESSURISATION
FILL STABILISATION TEST DUMP WAIT
The measurement cycle consists of 5 phases :
1 2 3 4 5
Start
Wait Fill Stabilisation Test Dump
End of
cycle
Start
Cycle launch.
The wait
time
Time during which the plugging of the test parts is carried out before
the part is filled. The instrument may be equipped with the automatic
connector option. This valve, controlled for the duration of the cycle
allows the control of the automated expandable joint connectors.
The fill time
Pressurisation of the test and reference parts. At the end of the fill time,
the ATEQ instrument controls the test pressure, if this is not correct, it
will signal a test pressure error.
The
Stabilisation
time
Test and reference parts are completely cut off from the air supply, but
are pressurised to the test pressure level. Pressure and temperature
will then stabilise between the two parts which communicate and act
similarly. If the test pressure is incorrect (an important leakage on one
of the volumes) the test pressure will drop rapidly, the instrument will
not move on to the test mode and will indicate a fault.
The test time
Test and reference parts are isolated from each other and the pressure
sensor measures the difference in pressure between them. The signal
is electronically assessed and displayed, the part is then diagnosed as
good or bad.
The dump
time
Return of the parts to the atmospheric conditions.
Cycle end
Once the dump has been carried out, the instrument emits a cycle end
signal and the automatic connector valve (option) is deactivated. This
valve can control one or more expandable connectors from the
beginning to the end of the cycle.
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