Chapter 4 – Functions of the instrument
UM-18400E-U ATEQ F580 User manual Page 98/168
The ATR compensation can only be used for parts which have a similar
behaviour during the test, in other words, parts generating an identical transient.
When the type of part changes or when the production is stopped for a certain
time, a new learning cycle should be carried out, as the transient will change.
The "ATR" error appears if the difference between the transient and the initial value is
greater than the reject level.
The transient can evolve in one direction or the other; it is therefore preferable to have
identical test and reference reject thresholds.
h) Pre-fill mode
This pre-fill function is used in three fields of application:
9 large volume part test: to fill the part faster in order to reduce the cycle time (without
pre-fill time),
9 test on parts requiring a mechanical constraint so that they remain stable for the
duration of the test,
9 part burst tests, where the pre-fill pressure exerts a mechanical constraint similar to
that of a mechanical resistance test on the test part.
Insertion of the pre-fill and pre-dump times in the measurement cycle.
TEST
PRESSURE
TIME
12
34 5 6 7
1) Wait
2) Pre-fill
3) Pre-dump
4) Fill
5) Stabilisation
6) Test
7) Dump
This function brings up the display of the words “pre reg. adjust” under “Spe. Cycle” so
that the new pressure can be set.
There are several types of pre-fill available.
•
Standard
With a mechanical regulator
Set the value of the pre-fill pressure manually adjusting the regulator knob and start a
"pre reg. adjust" special cycle then set the associated parameters.
With an electronic regulator
Simply set the associated parameters.
Associated parameters to be set:
Max P-FILL (maximum pre-fill pressure limit), Pre-
FILL
(pre-fill time), Pre-DUMP (pre-dump time).
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