3. OPERATION
Page 39 © 2002-2007 DH Instruments, a Fluke Company
The next display is to specify the full scale (maximum pressure) of the DUT or test.
1. Entry field for maximum pressure of the QDUT
Test sequence.
DUT full scale:
300 psi g
This entry determines the maximum pressure of the QDUT Test sequence. Enter the
maximum pressure and press [ENT].
Sequence full scale must be achievable by a QRPT available to PPC3 or an
error will occur when PPC3 attempts to AutoRange to the specified full scale.
(see Section 3.2.4).
To set up a test for which all the pressure are negative gauge (gauge
pressures less than atmospheric pressure), enter zero (0) as the <DUT full
scale> and the lowest negative gauge pressure as <DUT low point>.
If the measurement mode selected is absolute or negative gauge, the lowest
pressure must also be defined. The display is:
1. Entry field for minimum pressure of the QDUT
Test sequence. Recalls last value entered.
DUT low point:
- 10 psi g
This entry determines the lowest pressure of the QDUT sequence for tests in
absolute or negative gauge measurement mode. In negative gauge
measurement mode, the value must be zero or negative. Enter the test lowest
pressure point and press [ENT]. The display is:
1. Entry field for tolerance of the DUT that is
being tested in % of the DUT’s span.
DUT tolerance:
0.05 %FS (span)
This entry determines the in and out of tolerance limits for the DUT when the test
is run. It is also used to determine appropriate PPC3 resolution and hold limit
settings for the resulting AutoRange range.
Enter the DUT tolerance and press [ENT]. The display is:
1. Entry field for sequence pressure increment in
% of full scale. Recalls last value entered.
Test increment:
20.0%FS
This selection determines the size of the pressure increment for the test in terms
of % of the full scale (FS) value entered in the DUT Full Scale screen. The pressure
sequence will run in pressure steps of (full scale x increment %) ending with the
uneven increment if applicable.
Enter the desired pressure increment and press [ENT].
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