PG7000™ OPERATION AND MAINTENANCE MANUAL
© 1998-2008 DH Instruments, a Fluke Company
Page 90
OPERATION
For details on
pressure to mass
and
mass to pressure
operation, see Section 3.9.11.
To access the P
OR
M function, press
[P
OR
M]
,
the display is:
Select entry mode:
1pressure 2mass
Selecting
<1pressure>
activates
pressure to mass
mode and returns to the previous run screen.
Selecting
<2mass>
activates
mass to pressure
mode and returns to the previous run screen.
3.9.13
[
] AND [ ], [
←
]
PURPOSE
To activate motorized piston rotation manually.
Motorized piston rotation is optional on PG7102, PG7202 and PG7302. If motorized
rotation is not present, pressing [
] displays an informational message and has no effect.
PRINCIPLE
PG7000 offers motorized piston rotation as a standard feature on PG7601 and as an optional
feature on PG7102, PG7202 and PG7302. Motorized rotation engages and disengages to
rotate or stop the rotation of the PG7000 piston.
Motorized rotation can be set to operate automatically to maintain the piston within
Ready
condition rotation rate limits when the piston is floating and stop rotation before changing the
pressure or mass load (see Section 3.9.8). Motorized rotation can also be engaged manually
to accelerate or brake piston rotation at any time under direct operator control.
[
]
is used for momentary acceleration of piston rotation.
[
]
followed by
[
←
]
is used to
start a function that stops piston rotation.
OPERATION
To momentarily engage the motorized piston rotation system and accelerate the piston, press
[
]
from any run screen. If PG7000 is equipped with motorized rotation, the motorized
rotation system engages and remains engaged until maximum rotation rate has been
achieved or the key is released.
The display is a modified version of the 1
st
system run screen to indicate the piston rotation is
being accelerated while showing rotation rate and position:
1.
Current piston rotation rate.
2.
Current rate of piston vertical displacement.
3.
Current piston position.
12 rpm ACCELERATING
+ 2.05 mm 0.1/min
To start the piston braking function press and hold
[
]
, then press
[
←
]
. If PG7000 is
equipped with motorized rotation, the motorized rotation system engages and stays engaged
until the piston rotation is stopped. Once the braking function starts the keys may be released
and the function will complete unless
[ESCAPE]
is pressed.
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