3. OPERATION

 

 

 

 

 

 

 

 

 

Table 4. Settings and What They Are Specific To

 

 

 

 

(Range, Measurement Mode, Q-RPT, System)

 

 

 

 

 

 

 

 

 

SETTING

PURPOSE

SPECIFIC TO

SECTION

 

 

[Unit]

Set pressure unit of measure

Range

3.3.2

 

 

 

 

 

 

 

 

[Mode]

Set pressure measurement mode (absolute,

Range

3.3.3

 

 

 

gauge, negative gauge)

 

 

 

 

 

 

 

 

 

 

[Display]

Set bottom line display function

System

3.3.6

 

 

 

 

 

 

 

 

[Head]

Set fluid head correction height, fluid, unit of

System

3.3.7

 

 

 

measure

 

 

 

 

 

 

 

 

 

 

[SDS]

Open and close SDS

Q-RPT

3.3.8

 

 

 

 

 

 

 

 

[AutoZ]

Run AutoZ

Q-RPT and measurement mode

3.3.9

 

 

 

 

 

 

 

 

Resolution

Set pressure display resolution

Range

3.4.2

 

 

 

 

 

 

 

 

Stability

Set Ready/Not Ready stability test.

Range

3.4.3

 

 

 

 

 

 

 

 

Upper Limit

Set upper and lower pressure limit alarm

Range and measurement mode

3.4.4

 

 

 

 

 

 

 

 

AutoZ

AutoZ, ON/OFF, set and view values

Q-RPT and measurement mode

3.5.1

 

 

 

 

 

 

 

 

Screen Saver,

Set system user preferences

System

3.5.5

 

 

Sound, Time,

 

 

 

 

 

ID, Level

 

 

 

 

 

 

 

 

 

 

 

Lo vnt

Set status of TEST(-)vent valve, if present

Q-RPT

3.5.7.4

 

 

 

 

 

 

 

 

Cal

Various Q-RPT and barometer calibration

Q-RPT or barometer

3.5.8

 

 

 

functions, including turning off absolute and

 

 

 

 

 

negative gauge modes

 

 

 

 

 

 

 

 

 

3.2.4 PARALLEL MEASUREMENT MODE

RPM4s equipped with two Q-RPT modules of the same type (Axxx, Gxxx, BGxxx) can be set to operate in parallel measurement mode.

Parallel measurement mode is intended to improve measurement reliability and reduce measurement uncertainty by using the measurements of two Q-RPTs together. In parallel measurement mode, the measured pressure is the average of the readings of the two Q-RPTs.

Parallel measurement mode is considered a third Q-RPT designated <HL> (combination of Hi and Lo). Once it has been set up, the HL Q-RPT can be selected using the [RANGE] key and operated with all the features of a Hi or Lo Q-RPT. When setting up parallel measurement, the Hi and Lo Q-RPTs can be suppressed so that only the HL Q-RPT is active. This feature is used when the RPM4 will always be used in HL mode.

Parallel measurement mode is set up using [SPECIAL], <7internal>, <3RPT2x> (see Section 3.5.7.3).

3.2.5 USING RPM4 WITH A PPC3 CONTROLLER/CALIBRATOR

RPM4 can be integrated as a reference pressure measuring device in a PPC3 Pressure Controller/Calibrator System. See the PPC3 Operation and Maintenance Manual for information on setting up RPM4 to operate as the PPC3’s external device.

Before an RPM4 is used with a PPC3, the following settings should be made:

SDS Close SDS on all Q-RPT modules on which SDS is available (see Section 3.2.7).

Head If the RPM4 TEST port is at a different level than the PPC3’s TEST port AND the RPM4 will be used in absolute measurement mode, set the RPM4 head height to the PPC3’s TEST port level so that RPM4 is corrected to indicate the pressure at the level of the PPC3 TEST port (see Section 3.3.7).

Page 21

© 2004-2007 DH Instruments, a Fluke Company

Page 31
Image 31
Fluke manual Using RPM4 with a PPC3 CONTROLLER/CALIBRATOR, Setting Purpose Specific to Section, Sds, Open and close SDS