PG7000™ OPERATION AND MAINTENANCE MANUAL
© 1998-2008 DH Instruments, a Fluke Company
Page 44
In PG7102 and PG7202 High Line Differential mode (see Section 3.9.4.2), there are two types of mass
loading instructions: line pressure setting and differential pressure setting. Both follow conventional PG7000
mass loading protocol. The line pressure mass instructions are always given with 0.1 kg resolution. This is to
preserve the smaller masses for setting the differential pressure. The differential pressure mass loading
instructions follow conventional mass loading protocol using the masses that remain after the line pressure
has been set. It may be necessary to adjust the line pressure value to assure that adequate masses remain to
set the desired differential pressure. For example, if the line pressure requires loading 10.6 kg, the 0.5 and 0.1 kg
masses will be used to set the line pressure and will not be available if they are needed to set the differential
pressure. If this situation occurs, consider adjusting the line pressure so that it is set using a whole number
of kilograms, in this example 10.0 or 11.0 kg.
EXAMPLES: Manual Mass Loading
•
Mass loading instruction using a PG7601 and a
35 kg mass set:
12.3 kg and 32.33 g
Load:
piston (0.2 kg)
bell (0.3 kg)
4.5 kg #1 (makeup mass)
5 kg #1
2 kg #1
0.2 kg #1
0.1 kg #1
32.33 g from trim mass set
•
Mass loading instruction using PG7302 and an
80 kg mass set:
77.6 kg and 10.45 g
Load:
piston (0.2 kg)
bell (0.8 kg)
9 kg #1 (makeup mass)
10 kg #1 through #6
5 kg #1
2 kg #1
0.5 kg #1
0.1 kg #1
10.45 g from trim mass set