PG7000™ OPERATION AND MAINTENANCE MANUAL
© 1998-2008 DH Instruments, a Fluke Company
Page 178
After reinstalling the PRT and tightening the four socket head screws,
reassemble in the reverse order. Thermal grease may be applied lightly to
the PRT, if available. If the sensor lead locations were not noted correctly,
follow Table 28.
Reconnect the PG7000 terminal to the PG7000 Platform using the
cable supplied.
Power up PG7000 and verify proper operation of all on-board sensors.
Table 28.
Mounting Post Wire Colors, Description and Location
WIRE COLORS
DESCRIPTION AND LOCATION
Black/Yellow/White RPM
(P4)
Black/Black/Black/Black Vacuum
Sensor (center raised micro board)
White/White/Yellow/Yellow
Mounting Post PRT (P2)
Purple/Blue/Red
Motor Solenoid (J2)
Gray/Orange/Green/Brown LVDT
(P1)
5.2.1.6
REFERENCE VACUUM GAUGE (PG7601 ONLY)
PURPOSE
To view and adjust the output of the on-board reference vacuum gauge
(PG7601 only).
OPERATION
To view the output of the reference vacuum gauge, press
[SPECIAL]
and select
<6vac>
,
<1view>
. The display is:
1. Current reading of the vacuum gauge in
Pascal. Reads
< > 20 >
whenever the
current reading is greater than 20 Pa.
2.
Indication that this is a vacuum display.
3. Current value of the Vacuum Multiplier
applied to the vacuum gauge reading.
4.
Current value of the Vacuum Adder (always
in Pa) applied to the vacuum gauge reading.
6.52 Pa vac
VA 0.5 VM 0.99984
To adjust the values of VA and/or VM press
[SPECIAL]
and select
<6vac>
,
<2cal>
to access a screen in which the values of VA and VM can be edited.
From here, press
[ESCAPE]
and select
<6vac>
,
<1view>
to view the vacuum
gauge reading with the edited calibration coefficients applied.
See Section 5.2.1.1 for an explanation of Adders and Multipliers and their use
in adjusting internal sensors.