DH Instruments PPC2+, Manual

Page: 111 / 166

PPC2+™ Operation and Maintenance Manual
Page 103
©2001 DH Instruments, Inc.
QPRR
Purpose Read the last RPT pressure, rate. and ATM pressure.
Query “QPRR?”
Classic “QPRR”
Remarks The last measured ready condition, pressure rate of pressure change, and ambient
pressure for the active RPT (Lo or Hi) and range is returned in the current pressure
units. This program message is useful when a rapid response of measured pressure
is needed. Each data field is separated by a comma, and is returned in the following
order:
ready, pressure UNITS, rate UNITS/s, atm UNITS
Here are the field descriptions:
ready: ‘R’ if the current pressure ready criteria has been met,
‘NR’ if the criteria has not been met. (see the “SR” program
message)
pressure The measured pressure for the selected RPT and range in the
current pressure units. This is followed by the current pressure units.
rate The measured rate for the selected RPT and range in the current
pressure units per second. This is followed by the current pressure
units.
atm The ambient pressure measured by the PPC2+ internal barometer in
the current pressure units (but always absolute). This is followed by
the current pressure units.
Example
(enhanced)
Query sent:
Query reply:
“QPRR?”
“R,2306.265 kPaa,0.011 kPa/s,97.000 kPaa”
Example
(classic)
Query sent:
Reply:
“QPRR”
“R,2306.265 kPaa,0.011 kPa/s,97.000 kPaa”
See Also “PR”, “PRR”, “SR”