RPM Series Rotary Meters

Presented byMike Javon

Product CoordinatorIndustrial Products Business Unit

Principle of Operation

Demand initiates gas flow through the meter

Impeller captures a fixed-volume of gas

Principle of Operation

Measuring cavity opens releasing gas downstream

The meter cycles four times completing one revolution

RPM Series Rotary Meter Codes and Standards

ASME Boiler & Pressure Vessel Code: Section VIII

ANSI B16.5 Flanged Pipe and Fittings

ANSI B31.8 Gas Piping

ANSI B109.3 Rotary Gas Meters

Pressure Rating: 175 PSIG (standard) - 285 PSIG (optional)

Proof Accuracy: +/-1%

Operating Temperature: -40° to +140° F

49 CFR 192 Min Federal Safety Standards

NSTA-1A Packaging

RPM Meter Features & BenefitsSuperior Strength

Heavy Duty Housings - Provides superior strength against bending or twisting from pipe stress.

Superior Strength

1.5M RPM Rotary Meter on Prover:

215 Pounds hand from a 6 foot schedule 80 pipe with NO affect on Accuracy/Proof.

Effect of weight on pipe - Meter still running at Qmax !!

RPM Meter Features & BenefitsFlexibility

Flexible space saving design - All RPM Series Meters mount in either a vertical or horizontal position, depending on available space and convenience. All standard and optional equipment can be positioned easily for quick service and convenient reading.

FlexibilityFlexible space saving design - Reverse flowing register available eliminating the need for costly additional piping.

FlexibilityFlexible mounting of accessories - Regardless of the meter’s mounting position, the temperature compensator or correcting instrument faces the reader.

RPM Meter Features & BenefitsMechanical Counter - All RPM Series Meters are supplied with a standard uncorrected mechanical register. The magnet driven register and its housing rotate in 90° increments to facilitate vertical or horizontal mounting of meter.

RPM Meter Features & BenefitsMechanical Counter - The integral register is built of teflon and glass reinforced nylon material assuring quiet operation and protection against corrosion. All meters are supplied with the register’s low frequency pulse transmitter (piezo switch).

RPM Meter Features & BenefitsPulsers

Low Frequency Inductive Pulser - The low frequency pulser option

RPM Meter Features & BenefitsPulsers

High Frequency Inductive Pulser - The high frequency pulser option produces a flow rate signal that interfaces with popular flow computers. The computer scales the meter’s output and totalizes the volume.

RPM Meter Features & Benefits

Temperature Compensator - The RPMTC has six months of data storage and includes a port for downloading corrected and uncorrected volumes.

RPM Meter Features & BenefitsTemperature Compensator Setup Parameters

Device & Customer I.D.

Back-up date for History File

English or Metric

4-8 Corrected & Uncorrected Digits Displayed

Base Temperature

Supercompressibility

Atmospheric Pressure

Base Pressure (Billing)

Inlet Pressure (at meter) for Fixed-Factor Measurement

Pulse Output Options

2 Corrected/1 Uncorrected

1 Corrected/1 Uncorrected/1 Alarm

Time Zone

RPM Meter Available Models