PG7000™ OPERATION AND MAINTENANCE MANUAL
© 1998-2008 DH Instruments, a Fluke Company
Page 50
If the pressure unit selected is inWa, the reference
temperature for water density must be specified. When
inWa is selected as the unit, the next display is:
Select inWa ref temp
4
°
C 20
°
C 20
°
F
Select the desired reference temperature for water density using the
[
←
]
or
[
→
]
key to move
the cursor. Pressing
[ENTER]
returns to the main run screen with inWa based on water density
at the selected reference temperature as the active pressure unit. The current inWa
reference temperature can be viewed by observing the position of the cursor in the reference
temperature screen.
See Section 7.1 for tables of the pressure unit of measure conversion factors used by
PG7000.
The UNIT function provides rapid access to a choice of up to six units. The choice of units
can be customized from a wider selection by the user (see Section 3.9.3.1). The default units of the
UNIT function depend on the PG7000 model. The default units are:
PG7102 and PG7601: 1kPa 2MPa 3Pa 4bar 5psi 6kcm2
PG7202 and PG7302: 1MPa 2kPa 3bar 4psi 5kcm2
To restore the default UNIT function settings, use the Unit Reset (see Section 3.11.9.2).
Certain internal and/or metrological functions (e.g., vacuum reference pressure) are always
represented in Pascal [Pa], regardless of the active pressure unit of measure.
When the current pressure unit of measure is an altitude unit, atmospheric pressure in the
AMBIENT run screen is expressed in kPa if the altitude unit is meters (m) or psi if the altitude
unit is feet (ft).
3.9.3.1
CUSTOMIZING PRESSURE UNITS AVAILABLE
UNDER THE UNIT FUNCTION
PURPOSE
To customize the selection of pressure units that are available for selection from
the
[UNIT]
function key.
PRINCIPLE
The UNIT function provides a choice of different pressure units of measure
depending on the PG7000 model. The units that are available by default are
those indicated in the Note in Section 3.9.3. However, PG7000 supports many
other pressure units of measure. Other units can be made available for selection
and units can be deleted by customizing the UNIT function. This allows PG7000
to offer a very wide selection of units while simplifying day to day operation.
The typical user will customize the
[UNIT]
function key to support the six most
commonly used units.