PPC4™ OPERATION AND MAINTENANCE MANUAL
© 2009 DH Instruments, a Fluke Company
Page 24
Table 4.
Settings and What They Are Specific To (Range, Measurement Mode, Q-RPT, System)
SETTING
PURPOSE
SPECIFIC TO
SECTION
Unit
Set pressure unit of measure
Range
3.2.10
Mode
Set pressure measurement mode
(absolute, gauge, negative gauge)
Range
3.2.11
Resolution
Set pressure display resolution
Range
3.2.19
Jog
Set jog step size
Range
3.2.20
Control
Set pressure control mode and
parameters
Range
3.2.13
Upper Limit
Set upper and lower pressure limit alarm
Range and measurement mode
3.2.21
AutoZ
Run AutoZ, ON/OFF, set and view value
Range and measurement mode
3.2.22
Screen Saver,
Sound, Time,
ID, Level
Set system user preferences
System
3.2.26
Head
Set fluid head correction height, fluid,
unit of measure
System
3.2.16
Control
reference
Set EXHAUST port pressure condition
System
3.2.27.1
Purge
Enable/disable purge function
System
3.2.17
Valve Drivers
Set status of external valve drivers
System
3.2.23
TEST (-) Vent
Set status of
TEST(-)
vent valve,
if present
System
3.2.27.5
Calibration
Various Q-RPT and utility sensor
calibration functions
Q-RPT, utility sensor or barometer
7.2, 7.3,
7.4
3.2.7
Operation with a PG7000 Piston Gauge
PPC4 can act as a pressure control source to automated setting pressure and floating the
piston of a PG7000 gas operated piston gauge.
For automated operation, the PPC4 communicates with the PG7000 through an RS232
connection from the PG7000 COM3 port to the PPC4 COM1 port. Pressure control
commands are sent from the PG7000 when it is in “AutoGen” mode (see the PG7000
Operation and Maintenance Manual).
The PPC4 may also be operated manually using its direct pressure control keys (see Section 3.2.1).
3.2.8
AutoRange
PURPOSE
To automatically set up PPC4 to optimize its measurement and control characteristics and
features to cover a specific pressure range. AutoRange functions create new ranges or select
from existing saved ranges.
PRINCIPLE
PPC4 is designed to support the calibration and test of a very wide variety of test ranges in
various measurement modes with a single pressure controller system.
The AutoRange function simplifies the task of selecting the Q-RPT best suited to cover a
specific test range and setting controller parameters appropriately for the range. These are
set automatically based on operator entry of desired measurement mode, pressure unit of
measure and range full scale. The selections and default settings made by AutoRange are
summarized in Table 5.
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