DH Instruments PPC3 - Page 46

PPC3™ OPERATION AND MAINTENANCE MANUAL
© 2002-2007 DH Instruments, a Fluke Company Page 36
If the active measurement mode is absolute or negative gauge (see Section 3.3.3),
the lowest pressure must also be defined. The next display is:
1. Entry field for minimum pressure of the Quick
Test sequence. Recalls last value entered.
Quick Test low P IH
- 70 kPa g
This entry determines the lowest pressure of the Quick Test sequence for tests in
absolute or negative gauge measurement mode. Enter the test lowest pressure
point and press [ENT]. In negative gauge mode the value must be zero or a
negative number.
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 in terms of % of the
full scale span of the test. The pressure sequence will run in pressure steps of
(span x increment %) ending with the uneven increment if applicable.
Enter the desired pressure increment and press [ENT].
Sequences in negative gauge measurement mode are divided into two
segments, zero to FS (positive) and zero to low pressure (negative). Each
segment is divided into increments using the test increment size. For
example, a test with a FS pressure of 50 kPa, a low pressure of –50 kPa and
a test increment of 20%, runs in a 0 to 50 kPa segment and a 0 to –50 kPa
segment in increments of 10 kPa.
The display is:
Test point sequence
1up 2down 3u&d 4d&u
This selection determines the order in which the test sequence increments will
execute. Selecting <1up> causes the sequence to execute starting at the low
point and going to the full scale value.
Selecting <2down> causes the sequence to run starting at the full scale value
and go to the low poihnt.
Selecting <3u&d> causes the sequence to run from low point to full scale and
back to low point.
Selecting <3d&u> causes the sequence to run from full scale to low point and
back to full scale.
Sequences in negative gauge measurement mode are divided into two
segments, zero to FS (positive) and zero to low pressure (negative). Each
segment is divided into increments using the test increment size.
<1up> causes the sequence to run from the low pressure to the FS pressure
through zero and <2down> causes the sequence to run from FS to the low
pressure through zero.