3. 6BOPERATION
Page 19
© 2007 DH Instruments, a Fluke Company
3.2
OPERATIONAL FUNCTIONS
All GPC1 operational functions are accessed from the instrument front panel. Sections 3.2.1 to 3.2.5
detail the various functions.
Figure 7
. Front Panel View
3.2.1
SETTING INLET SUPPLY PRESSURE, TEST INLET
REGULATOR ADJUSTMENT
Numerical references in this section refer to Section 3.2, Figure 7. For information on the
GPC1 operating principle, see Section 3.1.
Setting inlet supply pressure generally done at the beginning of a test or calibration based on
the maximum pressure of the calibration. It is good practice to set the inlet pressure just
below the maximum pressure desired to avoid accidental overpressure. The PDVV can then
be used for the final pressure adjustment at the maximum pressure (see Section 3.2.3).
With the INLET valve (5) closed, use the INLET SET regulator (4) and the INLET gauge (3)
indication to set the maximum desired test pressure.
The TEST INLET SET regulator sets the pressure to the TEST INLET valve. When the TEST
INLET valve is opened, this pressure can be generated rapidly in the system connected
to GPC1. Use caution in setting the TEST INLET regulator pressure and always check the
setting and adjust if necessary before using the TEST INLET valve (see Section 2.4.2).
1. PDVV drive air/test gas pressure
gauge
2. PDVV piston position indicator
3. Test inlet pressure gauge
4. Test inlet pressure regulator
5. Test inlet valve knob
6. PDVV increase fast and slow
buttons
7. PDVV decrease fast and slow
buttons
8. Test outlet valve knob
