DH Instruments PPC3 - Q-Rpt Calibration Using Caltool for Rpts Software; Editing and Viewing Q-Rpt Calibration Information

PPC3™ OPERATION AND MAINTENANCE MANUAL
© 2002-2007 DH Instruments, a Fluke Company Page 128
[ENT] through the calibration information.
After viewing the values of PA and PM
the display is:.
Allow abs and HI
neg g mode? 1yes 2no
The cursor is on the number corresponding to the current selection. Make the
desired selection. <1no> causes absolute and negative gauge modes to be
unavailable for the Q-RPT.
PPC3 may also use external Q-RPTs mounted in RPM4 Reference Pressure
Monitors. Viewing and adjustment of RPM4 calibration information is
performed locally on the RPM4, not through PPC3 (see the RPM4 Operation
and Maintenance Manual).
5.2.6 Q-RPT CALIBRATION USING CALTOOL FOR RPTS
SOFTWARE
To calibrate PPC3 Q-RPTs using CalTool software, refer to Sections 5.2.1,
 PRINCIPLE, 5.2.2, and 5.2.3 in this manual and then refer to the CalTool for
RPTs Software Manual.
CalTool for RPTs software and manual are supplied on the PPC3
General Accessories Disk (white CD) and can be downloaded from
www.dhinstruments.com.
5.2.7 EDITING AND VIEWING Q-RPT CALIBRATION
INFORMATION
 PURPOSE
View and/or edit Q-RPT calibration information fields including:
• The calibration date – This field is normally used to record the date on which the Q-RPT
is calibrated.
• The value of absolute mode AutoZero P
offset
(Axxx Q-RPTs only) – See Section 3.5.1
for complete AutoZero information. This value is normally set to zero following absolute
measurement mode calibration of an Axxx Q-RPT.
• The value of PA – The pressure adder for the selected Q-RPT (see Sections 5.2.1.1).
• The value of PM – The pressure multiplier for the selected Q-RPT (see Sections 5.2.1.1).
• Absolute and negative gauge measurement modes ON or OFF (Axxx Q-RPTs only)
– See Section 3.3.3,  PRINCIPLE for complete information on measurement modes.
This is set to OFF if the Axxx Q-RPT was calibrated in gauge mode with a gauge
pressure standard (see Section 5.2.5).
 OPERATION
As editing PA and PM values will change the calibration of the Q-RPTs, the edit function
should only be used by qualified personnel as part of the calibration process. Caution
should be taken to avoid accidental editing. A user level security system is available to
control access (see Section 3.5.5.5).