DH Instruments E-DWT-H, Руководство по эксплуатации и обслуживанию

Страница: 98 / 126

E-DWT-H OPERATION AND MAINTENANCE MANUAL
© 2009 DH Instruments, a Fluke Company Page 88
PRR
Purpose Read the next available
Ready
condition, pressure measurement, rate and on-board
barometer reading.
Query “PRR?”
Classic “PRR”
Optional Suffix
“n”
A suffix may be used instead of “
RptLabel
”
‘1’ Specify the Hi Q-RPT
‘2’ Specify the Lo Q-RPT
Remarks The next available
Ready
condition, Q-RPT pressure measurement, rate of pressure change,
and barometric pressure is replied in the current pressure unit of measure. . This can take up
to the current read rate period (1.2 seconds by default). 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: Three character ready status field. Refer to the “SR” command.
pressure: The measured pressure for the active Q-RPT in the current pressure unit.
This is followed by the current pressure unit.
rate: The measured rate of pressure change for the active Q-RPT in the current
pressure unit per second. This is followed by the current pressure unit of measure.
atm: The pressure measured by the RPM4-E-DWT on-board barometer in the current
pressure unit (and always absolute). This is followed by the current pressure
unit.
Example
(enhanced) Query sent:
Query reply: “PRR?”
“R,2306.265 kPag,0.011 kPa/s,97.000 kPa g”
Example
(classic) Query sent:
Reply: “PRR”
“R,2306.265 kPag,0.011 kPa/s,97.000 kPa g”
See Also “PR”, “QPRR”, “SR”
3.6.1, 3.1.2, 3.9.7.1
QPRR
Purpose Read the last Q-RPT pressure measurement, pressure rate and on-board barometer output
immediately.
Query “QPRR?”
Classic “QPRR”
Optional Suffix
“n”
A suffix may be used instead of “
RptLabel
”
‘1’ Specify the Hi Q-RPT
‘2’ Specify the Lo Q-RPT
Remarks The last measured
Ready/Not Ready
condition, active Q-RPT pressure measurement, rate of
pressure change, and barometric pressure is replied in the current pressure unit of measure
immediately. This program message is useful when a rapid response of measured pressure
is needed. It does not result in quicker pressure measurements. 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: Three character ready status field. Refer to the “SR” command.
pressure: The measured pressure for the selected Q-RPT in the current pressure unit.
This is followed by the current pressure unit and measurement mode.
rate: The measured rate of pressure change for the active Q-RPT in the current
unit of pressure per second. This is followed by the current pressure unit.
atm: The pressure measured by the RPM4-E-DWT on-board barometer in the
current pressure unit (but always absolute). This is followed by the current
pressure unit.
Example
(enhanced) Query sent:
Query reply: “QPRR?”
“R,2306.265 kPa g,0.011 kPa/s,97.000 kPa g”
“R,2306.265 kPa g,0.011 kPa/s” (no barometer)
Example
(classic) Query sent:
Reply: “QPRR”
“R,2306.265 kPa g,0.011 kPa/s,97.000 kPa g”
See Also “PR”, “PRR”, “SR”
3.6.1, 3.1.2, 3.9.7.1