FPG8601™/VLPC™ OPERATION AND MAINTENANCE MANUAL
© 2007 DH Instruments, a Fluke Company
Page 126
8.4.3
REMOVE THE CALIBRATION MASS AND DRIVE
Remove the four M4 SHC screws and split washers from the top of the calibration drive.
Lift up on the calibration drive just enough so that the mass is above the drive standoffs.
Using lint free gloves, slide the mass to the side and then down, out of the drive
assembly.
Replace the drive assembly on the four standoffs.
Figure 65.
Calibration Mass Drive Assembly
The heat sink is removed in Figure 65 for clarity. It is not necessary to remove the heat
sink to perform this procedure.
8.4.4
DETERMINE THE TRUE MASS VALUE OF THE INTERNAL
CALIBRATION MASS
The true mass of the internal calibration mass can be determined using any method desired.
DHI
determines the true mass by directly weighing the internal calibration mass on a
calibrated balance and adding the buoyancy force to the displayed value. Ambient air
pressure temperature and humidity are required to determine the buoyancy force. The equations
below describe this process.
(
)
(
)
H
7T
-
1.8969E
4
-
1.0487E
-
0.014544
)
,
(
T
TZ
P
Z
PT
T
P
f
N
N
N
N
air
+
+
+
=
ρ
ρ
⎟⎟
⎠
⎞
⎜⎜
⎝
⎛
+
=
mass
Air
T
m
m
ρ
ρ
1
Содержание FPG8601
Страница 1: ...2007 DH Instruments a Fluke Company FPG8601 VLPC Operation and Maintenance Manual...
Страница 10: ...FPG8601 VLPC OPERATION AND MAINTENANCE MANUAL 2007 DH Instruments a Fluke Company Page X N NO OT TE ES S...
Страница 12: ...FPG8601 VLPC OPERATION AND MAINTENANCE MANUAL 2007 DH Instruments a Fluke Company Page XII N NO OT TE ES S...
Страница 22: ...FPG8601 VLPC OPERATION AND MAINTENANCE MANUAL 2007 DH Instruments a Fluke Company Page 10 N NO OT TE ES S...
Страница 48: ...FPG8601 VLPC OPERATION AND MAINTENANCE MANUAL 2007 DH Instruments a Fluke Company Page 36 N NO OT TE ES S...
Страница 118: ...FPG8601 VLPC OPERATION AND MAINTENANCE MANUAL 2007 DH Instruments a Fluke Company Page 106 N NO OT TE ES S...
Страница 144: ...FPG8601 VLPC OPERATION AND MAINTENANCE MANUAL 2007 DH Instruments a Fluke Company Page 132 N NO OT TE ES S...
Страница 157: ...11 APPENDIX Page 145 2007 DH Instruments a Fluke Company 11 3 5 2 ABSOLUTE PRESSURE...
Страница 160: ...FPG8601 VLPC OPERATION AND MAINTENANCE MANUAL 2007 DH Instruments a Fluke Company Page 148 11 5 1 SYSTEM LEVEL GROUNDING...
Страница 161: ...11 APPENDIX Page 149 2007 DH Instruments a Fluke Company 11 5 2 FPG GROUND DIAGRAM...
Страница 162: ...FPG8601 VLPC OPERATION AND MAINTENANCE MANUAL 2007 DH Instruments a Fluke Company Page 150 11 5 3 VLPC POWER DIAGRAM...
Страница 164: ...FPG8601 VLPC OPERATION AND MAINTENANCE MANUAL 2007 DH Instruments a Fluke Company Page 152 N NO OT TE ES S...
Страница 166: ...FPG8601 VLPC OPERATION AND MAINTENANCE MANUAL 2007 DH Instruments a Fluke Company Page 154 N NO OT TE ES S...