PG7000™ OPERATION AND MAINTENANCE MANUAL
© 1998-2008 DH Instruments, a Fluke Company
Page 74
The second SYSTEM run screen displays:
1.
<n.nn°C>:
Current piston-cylinder
temperature. Source of value can be internal
measurement, default or user depending on
current SETUP selection (see Section 3.10).
The unit of measure is degrees Centigrade
[
±
°C]
and cannot be changed. Indicates
< ----
>
when information is unavailable or out of
range.
2.
<+n.nn/min>:
Sign and numerical value of
current rate of change of temperature. A
negative value indicates temperature
decreasing. A positive value indicates
temperature increasing. The unit of
n.nn°C ±n.nn/min
nnn.n Pa ±nnn.n/min
measure is degrees Centigrade per minute
[°C/min]
and cannot be changed. Indicates
< ---- >
when information is unavailable or out of range. Indicates
< ---- >
when “user” or “default” is
the current SETUP selection for piston-cylinder temperature source (see Section 3.10).
3.
<+nnn.n/min>:
(Used for PG7601 only.) Sign and numerical value of current rate of change
of the vacuum reference pressure. A negative value indicates pressure decreasing. A positive
value indicates pressure increasing. The unit of measure is Pascal per minute
[Pa/min]
and
cannot be changed. Indicates
< ---- >
when information is unavailable or out of range.
<Blank>
if the PG7000 model is not PG7601 or if user or default is the current SETUP
selection for reference vacuum (see Section 3.10).
4.
<nnn.n Pa>:
(Used for PG7601 only.) Current vacuum reference value. Can be internal
measurement, external measurement, default or user depending on current SETUP selection.
Flashes when Not Ready and piston is floating (see Section 3.4.3). The unit of measure is
Pascal
[Pa]
and cannot be changed. Indicates
< >20 Pa >
if current SETUP selection is
internal or external and current measurement is out of range or greater than 20 Pascal.
<Blank>
if PG7000 model is not PG7601.
Pressing
[ESCAPE]
in the second SYSTEM run screen returns operation to the
MAIN run screen. Pressing
[SYSTEM]
or
[
±
]
toggles between the first and
second SYSTEM run screen. All function keys are active from the second
SYSTEM run screen and operation returns to that screen when leaving functions
that were accessed from it.
The current selection in SETUP determines the source of the values used by
PG7000 for piston-cylinder temperature and vacuum reference values. If the SETUP
setting is user or default, the SYSTEM screen displays the user or default value, not
PG7000’s on-board measurement(s).
3.9.6
[AMBIENT]
PURPOSE
Access the AMBIENT run screen which displays the current ambient condition values being
used by PG7000 for calculations of reference pressures.
PRINCIPLE
PG7000 uses ambient condition values to calculate the reference pressures that it defines
(see Section 7.2). The source of the ambient condition values is specified in the current
SETUP file (see Section 3.10). The AMBIENT run screen displays the current ambient
condition values. If the SETUP selection for the ambient condition is internal measurement,
then the AMBIENT run screen provides a real time display of the measurement of PG7000’s
on-board sensor for that variable.
OPERATION
To access the AMBIENT run screen, press
[AMBIENT]
from any other run screen
(MAIN or SYSTEM).
