Controllers/Calibrators
RPM4 Reference Pressure Monitor

– Independent quartz reference pressure transducer modules (Q-RPTs) with individual self-defense systems (SDS™) (See Q-RPT module advantages under “Features.”)
– Infinite Ranging and AutoRange™
– Differential measurement mode (channel 1- channel 2)
– 15 kPa (2.2 psi) compound gauge Q-RPT with turndown to < 3 kPa (0.4 psi)
– Integrates with PPC4 as external reference measurement device
– Battery/charger pack available
– RPM4 carries on the tradition of the RPM line of pressure monitors: combining very high end performance with ruggedness and reliability
– Stability based Ready/Not Ready indication
– Built-in fluid head corrections
– User defined pressure units
– Intelligent AutoZero™ function
– Remote [ENTER] switch
– Large character, easy to read display
– 12 V dc power and battery pack option
– External valve drivers
– RS232 and IEEE-488 communications
– PC based recalibration utility software included
– Flash memory for simple and free embedded

Description

Premium performance in a compact and rugged reference pressure monitor
– Independent quartz reference pressure transducer modules (Q-RPTs) with individual self-defense systems (SDS™) (See Q-RPT module advantages under “Features.”)
– Infinite Ranging and AutoRange™
– Differential measurement mode (channel 1- channel 2)
– 15 kPa (2.2 psi) compound gauge Q-RPT with turndown to < 3 kPa (0.4 psi)
– Integrates with PPC4 as external reference measurement device
– Battery/charger pack available
– RPM4 carries on the tradition of the RPM line of pressure monitors: combining very high end performance with ruggedness and reliability
– Stability based Ready/Not Ready indication
– Built-in fluid head corrections
– User defined pressure units
– Intelligent AutoZero™ function
– Remote [ENTER] switch
– Large character, easy to read display
– 12 V dc power and battery pack option
– External valve drivers
– RS232 and IEEE-488 communications
– PC based recalibration utility software included
– Flash memory for simple and free embedded

RPM4 Reference Pressure Monitor is different from traditional pressure monitors. State-of-the-art performance from very low pressure to 280 MPa (40,000 psi)… advanced on-board features… compact and rugged… full local and remote communications… RPM4 is the perfect solution in a wide variety of high end pressure calibration, testing and measurement applications.

Infinite Ranging™ and AutoRange™
Infinite Ranging gives RPM4 Reference Pressure Monitor unprecedented versatility in adapting to the specific range of operation. With the easy-to-use AutoRange function, a few simple key strokes or a single remote command string at the start of a test adapt every feature of the pressure monitor to optimize it for the range to be covered. Just enter the maximum pressure and the measurement mode. AutoRange then:

– Selects and activates the most appropriate Q-RPT to cover the specified range and measurement mode.
– Sets the pressure unit of measure. • Activates absolute, gauge or compound gauge measurement.
– Adjusts display resolution to the appropriate level for the range.
– Adjusts overpressure alarms to the actual range of operation.
– Reduces measurement uncertainty proportionally to the selected range (premium class Q-RPTs only).

Note: The use of RPM4’s Infinite Ranging and AutoRange feature is recommended to optimize operation for a specific range but is not required to obtain “% of reading measurement specifications.

SDS™ Q-RPT self defense system
All Q-RPT modules up to 7 MPa (1 000 psi) include the unique Self Defense System™ (SDS). SDS valves automatically isolate and vent the module’s Q-RPT when it is not in use or an overpressure is about to occur. With SDS, any Q-RPT module can be left connected to pressure up to 10 MPa (1 500 psi) without needing to isolate or disconnect it.

Advanced on-board functions
RPM4 pressure monitors provides a variety of advanced on-board pressure data functions including:

– Special data such as pressure average over time, rate of change, hi/lo, freeze, deviation from set point.
– Differential mode directly measures the difference between two Q-RPTs including taring at the line pressure.
– Parallel measurement uses two Q-RPTs redundantly as one.
– Leak check measures average pressure rate of change over a user set time period.
– AutoTest automates calibration routines with tolerance testing and data logging.

Quartz reference pressure transducer (Q-RPT) modules
RPM4’s outstanding pressure measurement specifications are made possible by Fluke Calibration’s exclusive quartz reference pressure transducer (Q-RPT) modules.

Q-RPTs measure pressure by measuring the change in the natural oscillating frequency of a quartz crystal with pressure induced stress. To be qualified for use in a Q-RPT module, each transducer is individually evaluated and characterized using primary pressure standards. Only transducers exhibiting required levels of linearity, repeatability and stability are selected. A proprietary compensation model, derived from more than 15 years experience with thousands of quartz pressure transducers, is applied to optimize the metrological characteristics needed in a transfer standard. Standard and premium class Q-RPT modules are available to best fit your performance and budgetary requirements.

A unique dynamic compensation for atmospheric pressure system uses an independent on-board barometer to provide seamless switching between absolute, gauge and compound gauge modes at any time. The barometer is used only to measure the small variations in atmospheric pressure that occur during gauge mode operation so its absolute error and drift over time do not contribute to measurement uncertainty. Q-RPT modules offer the advantages of:

– % of reading measurement uncertainty with AutoRange span turndown available
– Negligible warm up time
– No gas species dependence
– Quartz element isolated from test medium
– Low sensitivity to orientation

Compatible with PPC4 Automated Pressure Controller
RPM4 can be used as an external reference pressure measurement device for a Fluke Calibration PPC4, fully automated, pressure controller/calibrator. One RPM4 can be connected to PPC4 by 9-pin RS232 cable. The RPM4’s Q-RPT(s) become part of the PPC4 system and are managed by the PPC4 transparently to the user. There is only one test connection for the PPC4 system’s full range of operation.

Q-RPTs and ranges

Q-RPT DesignationSI VersionUS Version
Max Range [kPa] AbsoluteMax Range [kPa] GaugeMax Range [psi] AbsoluteMax Range [psi] Gauge
A280M-L280 000280 00040 00040 000
A200M-L200 000200 00030 00030 000
A140M-L140 000140 00020 00020 000
A100M-L100 000100 00015 00015 000
A70M70 00070 00010 00010 000
A40M40 00040 0006 0006 000
A20M20 00020 0003 0003 000
A14M14 00014 0002 0002 000
A10M10 00010 0001 5001 500
A7M7 0007 0001 0001 000
A3.5M3 5003 500500500
A2M2 0002 000300300
A1.4M1 4001 400200200
A700K700700100100
A350K3502505035
A200K2001003015
A160K16060238
A100K11010161.5
BA100K111016
G200K20030
G100K10015
BG15K2152.2
G15K152.2

 

Q-RPT DesignationMeasurement MODE(s) SupportedOperating MediaSDSTMSelf Defense System
A280M-LAbsolute, Gauge and Compound GaugeGas Standard Oil availableNot available
A200M-L
A140M-L
A100M-L
A70MGas Standard Oil available Gas only
A40M
A20M
A14M
A10MIncluded
A7M
A3.5MGas only
A2M
A1.4M
A700K
A350K
A200K
A160K
A100K
BA100K1
G200KGauge only
G100K
BG15K2
G15K