DH Instruments PPCH-G, Руководство по эксплуатации и обслуживанию

Страница: 117 / 160

4. REMOTE OPERATION
Page 107 © 2007 DH Instruments, a Fluke Company
QPRR
Purpose Read the last RPT pressure, pressure rate and on-board barometer output as quickly as
possible.
Query “QPRR?”
Classic “QPRR”
Remarks
The last measured Ready/Not Ready condition, active Q-RPT or utility sensor pressure, rate of
pressure change, and barometric pressure is replied in the current pressure unit of measure.
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 Q-RPT or utility sensor in the
current pressure units. This is followed by the current pressure unit and
measurement mode.
rate: The measured rate of pressure change for the active Q-RPT or utility sensor
in the current unit of pressure per second. This is followed by the current
pressure unit of measure.
atm: The pressure measured by the PPCH-G on-board barometer in the current
pressure unit (but always absolute). This is followed by the current pressure
unit.
Example
(enhanced) Query sent:
Reply: “QPRR?”
“R,2.306 MPa a,0.011 MPa/s,97.000 kPa a”
Example
(classic) Query sent:
Reply: “QPRR”
“R,2.306 MPa a,0.011 MPa/s,97.000 kPa a”
See Also “PR”, “PRR”, “SR”
3.1.1, 3.5.7.2
RANGE
Purpose Change the active range to one of the available internal or external default Q-RPT ranges.
Read the active range full scale, pressure unit and measurement mode.
Command
Query “RANGE Rng ”
“RANGE?”
Classic “RANGE= Rng ”
“RANGE ”
Default “RANGE IH”
Rng: “IH” for the internal, hi Q-RPT or utility sensor
“IL” for the internal lo Q-RPT
“X1H” for the first external RPM4, hi Q-RPT
“X1L” for the first external RPM4, lo Q-RPT
“X2H” for the second external RPM4, hi Q-RPT
“X2L” for the second external RPM4, lo Q-RPT
Remarks The active RPT must be selected before making changes to settings that are dependent on
the range. The system MUST BE VENTED to change active RPTs.
RPTs selected with this command are used with their full default pressure range. External RPTs
must be found and initialized using the “RPT” command or function key before the can be
selected.
The reply indicates the active range in psi if the PPCH-G is a “US” version or in kPa if the
PPCH-G is an “SI” version.
Used as a simple query, the active range is returned, which can be an AutoRanged range or a
default range (see “ARANGE” cmd).
Example
(enhanced) Cmd sent:
Reply: “RANGE IL” (select internal Lo Q-RPT in it’s full default range)
“5000 psia”
Example
(classic) Sent:
Reply: “RANGE=IH” (select internal Hi Q-RPT in it’s full default range)
“10000 psia”
Example
(classic) Sent:
Reply: “RANGE=X2H”(select external 2
nd
RPM4, HI Q-RPT)
“5000 psia”
Example
(classic) Sent:
Reply: “RANGE” (request current range)
“220000 psia”
Errors ERR# 6:
ERR# 22:
ERR# 38:
Invalid Rng argument.
System must be vented for the requested operation.
The selected RPT is not available.
See Also “ARANGE”, “RPT”
3.2.6, 3.3.1, 3.3.4,