RPM4™ OPERATION AND MAINTENANCE MANUAL

PRR

Purpose

Read the next available Ready condition, pressure measurement, rate and on-board

 

barometer reading.

 

Query

“PRR?”

 

 

 

Classic

“PRR”

 

 

 

Optional Suffix

“n”

The active Q-RPT is assumed if no suffix is given.

 

 

‘1’

Specify the Hi Q-RPT if the Hi and Lo Q-RPTs are NOT OFF

 

 

 

Specify the HL Q-RPT if the Hi and Lo Q-RPTs are OFF

 

 

‘2’

Specify the Lo Q-RPT

 

 

 

‘3’

Specify the HL Q-RPT if the HL Q-RPT is active

 

 

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 on-board barometer in the current

 

 

 

pressure unit (and always absolute). This is followed by the current pressure

 

 

 

unit. Not all RPM4s are equipped with an on-board barometer. This field is

 

 

 

missing if the RPM4 is not equipped with an on-board barometer.

Example

Query sent:

“PRR?”

 

(enhanced)

Query reply:

“R,2306.265 kPaa,0.011 kPa/s,97.000 kPa a”

 

 

 

“R,2306.265 kPaa,0.011 kPa/s”

(no barometer)

Example

Query sent:

“PRR”

 

(classic)

Reply:

 

“R,2306.265 kPaa,0.011 kPa/s,97.000 kPa a”

See Also

“PR”, “QPRR”, “SR”

 

 

3.1.1, 3.2.1,

3.5.7.1

 

 

 

 

 

 

QPRR

 

 

 

 

Purpose

Read the last Q-RPT pressure measurement, pressure rate and on-board barometer output

 

immediately.

 

 

Query

“QPRR?”

 

 

Classic

“QPRR”

 

 

 

Optional Suffix

“n”

The active Q-RPT is assumed if no suffix is given.

 

 

‘1’

Specify the Hi Q-RPT if the Hi and Lo Q-RPTs are NOT OFF

 

 

 

Specify the HL Q-RPT if the Hi and Lo Q-RPTs are OFF

 

 

‘2’

Specify the Lo Q-RPT

 

 

 

‘3’

Specify the HL Q-RPT if the HL Q-RPT is active

 

 

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 on-board barometer in the current

 

 

 

pressure unit (but always absolute). This is followed by the current pressure

 

 

 

unit. Not all RPM4s are equipped with an on-board barometer. This field is

 

 

 

missing if the RPM4 is not equipped with a barometer.

Example

Query sent:

“QPRR?”

 

(enhanced)

Query reply:

“R,2306.265 kPa a,0.011 kPa/s,97.000 kPa a”

 

 

 

“R,2306.265 kPa a,0.011 kPa/s” (no barometer)

Example

Query sent:

“QPRR”

 

(classic)

Reply:

 

“R,2306.265 kPa a,0.011 kPa/s,97.000 kPa a”

See Also

“PR”, “PRR”, “SR”

 

 

3.1.1, 3.2.1, 3.5.7.1

 

© 2004-2007 DH Instruments, a Fluke Company

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Fluke RPM4 manual Prr, Qprr?