DH Instruments PPCH-G, Руководство по эксплуатации и обслуживанию

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PPCH-G™ OPERATION AND MAINTENANCE MANUAL
© 2007 DH Instruments, a Fluke Company Page 32
Table 5.
Settings and to what they are specific (range, measurement mode, Q-RPT, system)
SETTING PURPOSE SPECIFIC TO SECTION
Unit Set pressure unit of measure Range 3.3.2
Mode Set pressure measurement mode
(absolute, gauge) Range 3.3.3
Resolution Set pressure display resolution Range 3.4.2
Jog Set jog step size Range 3.4.3
Control Set pressure control mode and
parameters Range 3.4.6
Upper Limit Set upper limit alarm Range and measurement mode 3.4.4
AutoZ Run AutoZ, ON/OFF, set and view value Range and measurement mode 3.5.1
Screen
Saver,
Sound,
Time, ID,
Level Set system user preferences System 3.5.5
Head Set fluid head correction height, fluid, unit
of measure System 3.3.7
3.5.3
Valve
Drivers Set status of external valve drivers System 3.4.7
Cal Various Q-RPT and utility sensor
calibration functions Q-RPT, utility sensor or barometer 3.5.8
3.2.7 OPERATION WITH A PG7000 PISTON GAUGE
PPCH-G can act as a pressure control component for automatically setting pressure and
floating the piston of a PG7202 gas operated piston gauge.
For automated operation, the PPCH-G communicates with the PG7202 through an RS232
connection from the PG7202 COM3 port to the PPCH-G COM1 port. Pressure control
commands are sent from the PG7202 when it is in “AutoGen” mode (see the PG7000
Operation and Maintenance Manual).
The PPCH-G may also be operated manually using its direct pressure control keys (see
Section 3.1.3) but it is not practical to float a piston using this technique.
3.2.8 DIRECT FUNCTION KEYS SUMMARY
Local operation of PPCH-G is through the front panel keypad. To minimize menu layers, the
keypad numerical keys also provide direct access to the most commonly used functions. The
function accessed is labeled on the bottom half of the key. Direct function keys are active
whenever PPCH-G is in its MAIN RUN screen. Table 6 summarizes the operation of the
direct function keys and Sections 3.3.1 through 3.3.10 detail their operation.
Table 6 provides a brief summary of direct function key operation. It may be useful to keep
a copy of this summary near the PPCH-G, especially when first becoming acquainted with the
instrument’s operation.