DH Instruments FPG8601, Руководство по эксплуатации и обслуживанию

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FPG8601™/VLPC™ OPERATION AND MAINTENANCE MANUAL
© 2007 DH Instruments, a Fluke Company Page 54
LABEL DESCRIPTION
δ
Ν1
Correction factor due to the change in lubrication pressure since the last system
zero (see Section 2.7.1). The value represents the change of buoyancy force on
the load cell.
δ
Ν2
Correction factor due to the relative change in lubrication pressure and reference
pressure since the last system zero. The value represents the change in drag
force on the piston (see Section 2.7.2).
δ
Ν3
Correction factor due to the change in the reference pressure (atmosphere or
vacuum) after the last system zero. The value represents the change in buoyancy
force due to the reference pressure (see Section 2.7.3).
Head Correction
Pressure error associated with the difference between the reference level of the
DUT and FPG. The value is automatically applied to the FPG pressure.
K_Cal
Calibration factor in effect when the point was taken. This value will change if an
internal calibration is performed between points either discretely or as the result of a
tare (see Section 5.3).
Effective Area
Effective FPG area based on the current temperature (see Section 11.3).
Residual Pressure
Instantaneous or averaged residual pressure in Pa as output by the vacuum
reference sensor when it is enabled (see Section 6.6.2.1). When it is not enabled,
0 Pa is always used. This value is only relevant when the FPG is being used in
absolute mode. Gauge mode reference pressure is ATM. Absolute differential
mode can display a value, but not apply it to the FPG pressure.
ATM Pressure
Instantaneous or averaged atmospheric pressure in kPa.
ATM (0) Pressure
Atmospheric pressure logged during the last tare. Same as the value found on
the <Tare Display> (see Section 6.3.3). This value can change if the system is re-
zeroed between points.
Lube Pressure
Instantaneous or averaged lubrication pressure in kPa.
Lube (0) Pressure
The lubrication pressure when the system was last zeroed. Same as the value
found on the <Tare Display>. This value can change if the system is re-zeroed
between points.
Post Temp
Instantaneous or averaged mounting post temperature in °C. Each mounting post
temperature value is an average of both mounting post PRTs.
Post Temp Rate/m
The rate of change per minute of the mounting post temperature in °C/m.
Post Temperature (0)
The mounting post temperature at the time the system was last zeroed. This
value can change if a re-zero occurs between points.
Lube Temp
Instantaneous or averaged lubricating volume temperature in °C.
Lube Temp Rate/m
The rate of change per minute of the lubricating volume temperature in °C/m.
Lube Temperature (0)
The lubricating volume temperature at the time the system was last zeroed. This
value can change if a re-zero occurs between points.
%RH
Instantaneous or averaged relative humidity.
%RH/m
The rate of change per minute of the humidity measured in the lubricating volume.
%RH (0)
The relative humidity logged at the time the system was last zeroed. This value
can change if a re-zero occurs between points.
6.3.6 VLPC CONTROL
This window is the interface to the VLPC. If the
[Config], [System Setup], <Setup>,
<Enable VLPC>
option is selected, the window is available for input in all run modes.
Use the tools on this display to: change range, vent pressure, abort control or set a new
target pressure. After each operation is executed, the window is disabled until the operation
is complete.
Use the <Operation Abort> toolbar function to abort operations that you do not want
to complete. However, this may leave the system in an undefined state. So make sure
that a new range is set or the pressure is vented if an early abort occurs.