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Gas Measurement Equipment Approved for Billing Purposes
Home \ Approved Gas Measurement Equipment
 
Diaphragm Meters

In Accordance with COMAR 20.55.05.02 and COMAR 20.25.01.04-1A(2)

 

Diaphragm Meters - Aluminum Case

 

Current Manufacturer

Prior Manufacturer

American Meter Company

American, Singer

Models:  80B  AL-175  5B-225  250B  AC-250  AL-250  AL-425  500B  AL-600

AC-630  AL-800  AL-1000  AL-1400  AL-2300  AL-5000 AR-250 AC-800

Temperature Compensated Models:  AL-175  AL-250  AL-425  5B-225  AR-250

ARKLA

 

Model:  V250

Dresser

        Model D800

Equimeter

Rockwell

Model:  RX250

Temperature Compensated Model:  RX-250TC

Rockwell International

EMCO (Pittsburgh)

Models:  0  and  00

Rockwell International

Rockwell

Models:  150  175  R175  R200  RT210  R230  250  R275  310  415  750  1000  1600  3000  5000  10,000

Actaris U.S. Gas

 

Model: Gallus 2000.  Indoor installation for submetering  only

Actaris U.S. Gas

Models:  METRIS-250

"A" Series Models:  400A  675A  800A  1000A

Itron                                                                           

Actarias US Gas,  Sprague

Models:  1A  175  240  250  305  400  675  1000 175RM; I-250

Temperature Compensated Models:  175  and  250

Superior (Defunct)

 

Models:  AL175A  AL250  AL340

Universal Lancaster National

 

Model:  UL250

Westinghouse-ABB

 

Model:  G-2

 

 

 

 

 

 

 

 

 

 

 

Diaphragm Meters - Iron Case

 

Current Manufacturer

Prior Manufacturer

American Meter Company

American, Singer

Models:  5B  10B  20B  25B  30B  35B  60B  80B  250B  500B  DU-5000

American Meter Company

Metric, Singer

Models:  5B  10B  20B  25B  30B  35B  60B  80B  250B  500B

Rockwell International

EMCO (Pittsburgh)

Models:  0  2  2-1/2  3  4  4-1/2(steel)  5(steel)

Sprague Meter Division of Textron, Inc.

 

Models:  1A  1D  2  3  4  5  250

 


 

Diaphragm Meters - Tin Steel Case

 

Current Manufacturer

Prior Manufacturer

American Meter Company

Accurate, Singer

Models:  5-225  5T-225

American Meter Company

American, Singer

Models:  5B  5M  5T  10A  10B  10M  11C  20A  20B  25C  30A  30B  30M  40C  60A  60B  60C  60M  100B  150A  200B

American Meter Company

Lambert, Singer

Models:  5B  10A  10B

American Meter Company

Maryland, Singer

Models:  5B  10B  11C  20B  30B  40C  60B  60C  100B  200B

American Meter Company

Tufts, Singer

Model:  5B

Rockwell International

EMCO (Pittsburgh)

Models:  5-200  5B 10A

Rockwell International

Rockwell

Models:  5-80  5-200  5-300  10-425

Superior (Defunct)

 

Models:  5A  5AA  5B  5T  10A  10B  11C  20A  20B  30A  40C  60A  60C

 

Rotary Meters - Aluminum Case

 

Current Manufacturer

Prior Manufacturer

American Meter Company

American, Singer

Models:  CVM 3.5M125  CVM 5.3M125  CVM 11M125

American Meter Company

 

Models:  RPM 9.0C   RPM 1.5M   RPM 3.5M   RPM 5.5M   RPM 7.0M   RPM 11.0M

RPM 16.0 M

These models are approved for use with or without a counter, mechanical temperature compensator, and electronic temperature compensator.

Dresser Measurement Division, Dresser Industries, Inc.

Dresser

Models:  1.5M125  3M125  5M125  7M125  11M125  16M125

Dresser Measurement Division, Dresser Industries, Inc.

Roots

Series B3 models are approved for use with any combination of Counter Version, Instrument Drive, Temperature Compensated, and Solid State Pulser.

Series B3 Models:  8C175  11C175  15C175  2M175  3M175  5M175  7M175  11M175  16M175  23M175   23M232 4 inch   38M175

Romet

 

Models:  RM2000  RM3000  RM5000  RM7000  RM11000

 


 

Rotary Meters - Cast Iron Case

 

Current Manufacturer

Prior Manufacturer

Dresser Measurement Division, Dresser Industries, Inc.

Roots - Connersville

Models:  3-1/2x10  4x12  5x10  5x15  6x18  8x12  8x24  10x30  12x18

Dresser Measurement Corporation

Roots

Model:  Meter #4

Dresser Measurement Division, Dresser Industries, Inc.

Dresser

Models:  1.5M125  3M125  5M125  7M125  11M125  16M125  23M125  38M125  56M125  102M125

Rockwell International

Rockwell

Roto Seal Models:  R-3  R-5  R-8

 

Turbine Meters

 

Current Manufacturer

Prior Manufacturer

American Meter Company

American, Singer

Models:  GT 125 4" (4 GT-16M)  GT 125 6" (6 GT-30M)  GT 125 8" (8 GT-60M)

Daniel Measurement & Control

 

Models:  Mini-Gas Turbine Meter (1", 2", 3")  Gas Turbine Meter (4", 6", 8", 12")

Dresser Measurement Division, Dresser Industries, Inc.

Roots - Connersville

Model:  8C125

Invensys Energy Metering Auto-Adjust Turbo-Meter

 

4”, 6”, 8”, and 12”

Rockwell International

Rockwell

Mark I Models:   6"T-30  8"T-60

Mark II Models:  4"T-18  6"T-30  8"T-60  12"T-140

 


Ultrasonic Gas Meters

 

Current Manufacturer

Prior Manufacturer

Sensus Metering System

Invensys Energy Metering

Models:  Sonix 215, 600, 880, 2000

 

 

Fluid Oscillation Meters

 

Current Manufacturer

Prior Manufacturer

Actaris U.S. Gas

 

Models: FM2-1M, FM2-1.5M, FM2-2M, FM2-3M, FM2-5M, FM2-7M, FM2-11M, FM3-7M, FM3-11M, FM3-16M, FM3-23M, FM3-38M, FM3-56M 

Approved versions:  Basic (uncorrected), ETC (temperature compensated), PTZL (Pressure, Temperature, and Z compensated) or Mini Max (integral Mercury Mini Max corrector)

 

 

 

 

 

Orifice Metering Systems

 

Orifice metering is approved for billing purposes, provided that the requirements listed below are met and the utility submits an acceptable In-Service Performance Plan to the Commission’s Engineering Division.

 

Acceptable Engineering Standards:

 

ü      American Gas Association Report No. 3: Orifice Metering of Natural Gas and Other Related Hydrocarbon Fluids, Part 1: General Equations and Uncertainty Guidelines

ü      American Gas Association Report No. 3, Part 2: Specification and Installation Requirements

ü      American Gas Association Report No. 3, Part 3: Natural Gas Application

 

Applicability:

 

Orifice meters shall be permissible in applications where the uncertainty of the orifice meter is less than 1.0% for all historical and/or expected sustained demand levels of gas flow. The uncertainty of the orifice meter shall be calculated as specified by the American Gas Association Report Number 3 (AGA 3), Part 1.  The utility must demonstrate the uncertainty calculation result is less than 1.0% for all expected sustained demand levels of flow. To ensure the uncertainty requirements are met across the expected flow range, a stacked differential pressure transducer arrangement may be used.

 

Installation and Specifications:

 

Each orifice meter installation shall meet the geometrical, dimensional, and installation requirements as specified by the AGA 3, Part 2 standard in effect at the time of construction. Note that earlier editions of AGA 3 may have requirements that affect the uncertainty of the orifice meter adversely, resulting in greater uncertainty. Therefore, the AGA 3, Part 2 edition number must be greater than or equal to the AGA 3, Part 1 edition number used to calculate uncertainty.

 

Calculation of flow through the orifice meter shall be performed as specified by AGA 3 using “real-time data” for differential pressure, static pressure, and flowing temperature. Specific gravity shall be measured and representative of the gas flowing through the orifice meter. Orifice bore diameter and meter tube diameter shall be used in calculating flow as specified by AGA 3.

 


 

Pressure And/Or Temperature Correcting Devices

 

Current Manufacturer

Prior Manufacturer

American Meter Company

 

BP30 (0-1 lbs  0-5 lbs  0-15 lbs  0-30 lbs)  BP60 (0-45 lbs)  BP78 (0-60 lbs)

BP120 (0-100 lbs)  BP300 (0-250 lbs)

BPICI:  0-5 Bellows  0-5 Bourdon Tube  0-15  0-45  0-60  0-100  1-150  0-300

BVI:  120 (0-100)  300 (0-250)

BVI CI:  0-100  0-150

American Meter Company

Eagle Research Corp.

Electronic Flow Corrector AE 2000 EFC (RTU 80/1 EFC)  0-200  0-500

AE5000 EFC Electronic Flow Computer

AE5000 EC Electronic Corrector

AE5000 EPR Electronic Pressure Recorder

Dresser Measurement Division, Dresser Industries, Inc.

Roots

Volume Temperature Compensator

Volume Correction Computer

Dresser ES3 Electronic TC Index

Equimeter, Inc.

 

Nex Corr Base Volume Corrector

Mercury Instruments

 

Mercury Mini-Max Electronic Volume Corrector

Mercor Mini-AT Electronic Volume Corrector

Mercor Mini-PT Electronic Volume Corrector

Mercor EC Electronic Volume Corrector

Mercor Mark III  0-1  0-5  0-15  0-30  0-60

Mercury Electronic Temperature Compensating Index TCI

Reynolds

 

In-Line Model 831 PT Electronic Volume Corrector 0-100 psia pressure range

RECOR 323 LVC Volume Corrector

Rockwell International

 

Electrocorrector P&T  0-25  0-50  0-100  0-200  0-500

Electrocorrector-P  0-25  0-50

Type I and T Emcorrector 0-10  0-20  0-50  0-100  0-175  0-200  0-250  0-500

Romet Limited

 

Electronic Gas Pressure Corrector Model IMP-PT 0-250 psig

 


 

Recording Gauges - Pressure + Volume

 

Current Manufacturer

Prior Manufacturer

American Meter Company

Metric

Type PV  0-15  0-30  0-50  0-100  0-200

Mercury

 

Type PV  0-10  0-50  0-100

Rockwell International

 

Type PV  0-50  0-100

Type PV + Time  0-50  0-100  0-250

 

Recording Gauges - Pressure + Volume + Temperature

 

Current Manufacturer

Prior Manufacturer

Mercury

 

Type PV + Temp.  0-100  Temp. 0-250 F

Type PV + Temp. + Time  0-100  Temp. 0-250 F

 

 

 

Meter Provers

 

American Meter Company                    Sonic Nozzle Auto Prover (SNAP)

Energy Economics Inc.             Sonic Nozzle Prover (SNP)

 

 

 

 

 

 

 

                                                ___________________________

                                                            Morris Schreim

                                                            Chief Engineer

 

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