PPC3™ OPERATION AND MAINTENANCE MANUAL
© 2002-2007 DH Instruments, a Fluke Company Page 32
OPERATION
To use the AutoRange function, press [AutoRange] and respond to the PPC3’s prompts.
Select AutoRange measurement mode: The screen is identical in appearance and
function to the [MODE] screen (see Section 3.3.3). The choice of measurement modes
offered reflects all the Q-RPT types available (Axxx, Gxxx, BGxxx) in the PPC3 system,
not just the active Q-RPT.
Select pressure unit of measure: The screen is identical in appearance and function to
the [UNIT] screen (see Section 3.3.2).
Altitude units of measure (m, ft) are not available for AutoRange.
Enter the AutoRange full scale pressure: Enter the full scale pressure value in the
<------> entry field and press [ENT]. If the full scale pressure entered cannot be covered
by any of the Q-RPTs available, an error message is displayed. If the full scale pressure
can be covered by an available Q-RPT, AutoRange proceeds to the range display.
View proposed AutoRange range: The proposed AutoRange range screen is:
1. Indication that this is a screen of the proposed AutoRange range.
2. Designator and position of the Q-RPT that AutoRange has selected
to cover the AutoRange full scale and measurement mode.
3. Pressure unit of measure specified in AutoRange.
4. AutoRange full scale pressure in gauge mode and absolute mode if
available. Shows absolute mode only if AutoRange measurement
mode is absolute and full scale is less than 100 kPa (14.5 psi).
Gauge mode only if the Q-RPT is a Gxxx, BGxxx or Axxx with
absolute OFF.
AutoRange A700K X1H
kPa 200g/300a
If an external Q-RPT that should be available is not being selected by AutoRange, use
[RPT] to search for Q-RPTs and determine whether external Q-RPTs have been
properly connected and initialized (see Section 3.3.5). The PPC3 utility sensor (IuH)
cannot be AutoRanged.
Accept proposed AutoRange: To accept the proposed AutoRange and go the MAIN
RUN screen with the AutoRange range active, press [ENT] or [AutoRange]. To modify
the AutoRange full scale, measurement mode or pressure unit of measure, use [ESC] to
back up through the AutoRange screens and make changes.
If you would like to use a Q-RPT other than the one selected by AutoRange, use [RPT] or the
cursor control keys to toggle through the choices available. Only Q-RPTs that can cover the
specified full scale and measurement mode are shown. Press [ENT] or [AutoRange] when
the desired Q-RPT is displayed.
The BA100K Q-RPT cannot be AutoRanged.
Before operating PPC3 with external Q-RPTs, check carefully that the Q-RPT TEST(+) port
is connected to the PPC3 TEST(+) port. If the external Q-RPT is NOT connected to the
PPC3 TEST(+) port, it will not measure the pressure generated by PPC3 and PPC3 may
reach a pressure higher than the target pressure before its watchdog function recognizes
that the external RPT is not connected.
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