3. GENERAL OPERATION
Page 73
© 1998-2008 DH Instruments, a Fluke Company
3.9.5.1
FIRST SYSTEM RUN SCREEN
OPERATION
The first SYSTEM run screen provides real time display of piston rotation rate,
decay in piston rotation rate, piston position and piston fall rate.
To access the first SYSTEM run screen, press
[SYSTEM]
from any other
run screen.
The first SYSTEM run screen displays:
1.
<nnn rpm>
: Numerical value of current
piston rate of rotation. The unit of measure is
rotations per minute
[rpm]
and cannot be
changed. Flashes when Not Ready and
piston is floating (see Section 3.4.2).
Indicates
< ---- >
when information is
unavailable or out of range.
2.
<±nn/min>:
Numerical value of current decay
in piston rotation rate (deceleration). The unit
of measure is rotations per minute [rpm/min]
and cannot be changed.
< ---- >
when
information is unavailable or out of range.
nnn rpm ±nn/min
±n.nn mm ±n.nn/min
3.
<
±
n.nn/min>:
Sign and numerical value of current piston vertical rate of displacement. A
negative value indicates piston falling. A positive value indicates piston rising. The unit of measure
is millimeters per minute [mm/min] and cannot be changed. Indicates
< ---- >
when
information is unavailable or out of range.
4.
<
±
n.nn mm>:
Sign and numerical value of current position of the piston within the piston
stroke (see Section 3.5). The unit of measure is millimeters
[mm]
away from mid-stroke
position and cannot be changed. Indicates
<HSTOP>
when the piston is at the high stop (all
the way up) and
<LSTOP>
when the piston is at the low stop
(all the way down). Flashes when Not Ready and piston is floating (see Section 3.4.1). Indicates
< ---- >
when information is unavailable or out of range.
Pressing
[ESCAPE]
in the first SYSTEM run screen returns operation to the MAIN
run screen. Pressing
[SYSTEM]
or
[
±
]
toggles between the first and second run
screen. All function keys are active from the first SYSTEM run screen and
operation returns to that screen when leaving functions the were accessed from it.
The measurement systems for piston behavior indications rely on movement of
the mass loading bell. Piston behavior indications (piston position, piston rotation
rate) are not valid when the mass bell is not loaded on the piston.
See Section 3.5 for information on the piston stroke and measurement zone.
3.9.5.2
SECOND SYSTEM RUN SCREEN
OPERATION
The second SYSTEM run screen displays the values of piston-cylinder
temperature and temperature rate of change measured by PG7000.
PG7601 also displays reference vacuum and vacuum rate of change. If internal
or external measurement is specified for the vacuum values in SETUP (see
Section 3.10), the second SYSTEM run screen provides a real time display of the
values measured.
To access the second SYSTEM run screen, press
[SYSTEM]
or
[
±
]
from the first
SYSTEM run screen. To access the first SYSTEM run screen, press
[SYSTEM]
from any run screen.