Model 250 Metris Gas Meter

Model 250 Metris Gas Meter The Metris Meter is uniquely constructed to give utilities the edge they need in an increasingly complex and competitive marketplace. The Metris offers three versions that provide greater flexibility for your metering needs. The unique modular design of the Metris offers the advantage of complete customization to fit individual installation needs. In addition, due to inventory and manufacturing enhancements provided by modularity, this invaluable flexibility can also be delivered with unparalleled speed and scheduling dependability.

COMPACT SIZE

While the Metris is more compact than traditional meters, it was also designed to meet customer expectations to be returned to the field after meter sampling or meter change-outs. The Metris is also rated at a full 250 CFH. The square base of the Metris and its 33% reduction in weight provide for stability and reduced shipping costs.

Modular Versatility
Features & Benefits
Construction
Specifications
Correction Factor
Dimensions


Regulator/Manifold	AMR Compatibility	Measurement Module	Die-cast Housing

B42R Pressure Regulator Pressure Taps - Regulator inlet, Regulator Outlet, & Meter Outlet Cast Iron Manifold for Installation Strength Field Replaceable Regulator Diaphragm Case	Slant Face Sprague Meter Mounting Design Compatible with All AMR Manufacturers	Common Between All 3 Versions Seamless Single Convolution Diaphragm Lubrication-free Bearing Surfaces Direct Diaphragm Support Remanufacture Meters in Record Time	Lifetime Warranty Bottom Case Common Between All 3 Versions

FEATURES

Modular Design
Built-in Pressure Taps (RM)
Lubrication Free Bearing Surfaces
4-chamber Design
AMR Compatible
Top Entry Adjustment
Tamper Resistant Design
Common Measurement Module
5/16" 4 Nut Adjustment Mechanism

BENEFITS

Compact Size
Better overall aesthetics
Fewer potential leak points
Easy handling
Simplified service/repair
Flexible piping configurations
Long life
Maintenance free operation
Cost effective temperature compensation

PART	MATERIAL

Center Module and Side Covers	Acetal
Cam Crank	Acetal
Flags, Flag Arms & Arm Links	Acetal
Valve Links	Acetal
Retaining Clip, Valve Cover Guides & Gear Shaft	Acetal
Tangent Plate	Die-cast Aluminum
Index Cover	Polycarbonate (Lexan)
IDM Seal	Acetal
IDM Boot	Nitrile
Valve Seat & Covers	Thermoset Phenolic
Diaphragm Plates	Acetal
IDM Shaft, Center Shaft & Flag Shaft	Stainless Steel
Diaphragm Disks	Tin-plated Steel
O-Rings	Nitrile
Outlet Seal	Nitrile
Case Gasket	Cork/Neoprene
Index Gears	Acetal
Index Face Plate	ABS
Top & Bottom Castings	Die-cast Aluminum
Handhole Cover	Stamped Aluminum
Regulator	Die-cast Aluminum (Metris RM only)
RM Manifold	Cast Iron (Metris RM only)
MB Plate	Steel (Metris MB only)


Meter Classification	Metris 250	Metris RM	Metris MB

Meter Capacity	250 CFH Natural Gas @ 0.5 inch H²O differential 400 CFH Natural Gas @ 1.0 inch H²O differential

Meter Type	(TC) Temperature Compensated or (NTC) Non-temperature Compensated

Index	4 Circle Dial (ft³ - Standard Pressure, 14 inch H²O, 2 PSIG) 4 Digit Direct Read (ft³ - Standard Pressure) 5 Digit Direct Read (ft³ or m³ - Standard Pressure) ft³ - 1/2' and 2' proving dial m³ - 10dm³ and 50dm³ proving dial Standard = 7 inch H²O @ 14.73 PSIA base/14.4 PSIA atmospheric

Meter M.A.O.P.	5 PSIG

Regulator M.A.O.P.	N/A	125 PSIG	N/A

Hub Sizes	#1 Sprague Standard, 10 LT, 20 LT, 30 LT, 1-1/4"

Inlet Connection	N/A	3/4" or 1" Female NPT

Surface Treatment	ASA 49 Gray Polyester Powder Coating

Packaging	75 Pack/Skid	N/A	N/A

MEASUREMENT INFORMATION

Units	Imperial (cubic feet - ft³) Metric (cubic meters - m³)

Index Drive	2 Cubic Feet/Revolution 50 Cubic Decimeters/Revolution

Tangent Crank	14 Revolutions/Cubic Feet 0.5 Revolutions/Cubic Decimeter or 0.071 Cubic Feet/Revolution 2 Liters/Revolution

CORRECTION FACTORS FOR NON-NATURAL GAS APPLICATIONS

The Metris may be used to control materials other than natural gas. To determine the capacity of the Metris for gases other than natural gas, it will be necessary to multiply the values within the capacity tables by a correction factor. The following table lists the correction factors for some of the more common gases...

Gas Type	Specific Gravity	Correction Factor (CF)

Air	1.00	1.00

Argon	1.38	.85

Dry Carbon Dioxide	1.52	.81

Ethane	1.04	.98

Helium	.14	1.49

Hydrogen	.07	1.02

Krypton	2.82	.59

Methane (pure)	.55	1.35

Natural Gas	.60	1.29

Neon	.70	1.20

Nitrogen	.97	1.02

Propane	1.53	.81

Xenon	4.53	.47

To calculate the correction factor for gases not listed on the table above, it will be necessary to know the specific gravity of the gas and use it in the formula...

Where...

SG1 = Specific Gravity of the gas in which the capacity is published.
SG2 = Specific Gravity of the gas to be controlled.


	Metris 250

A	7.7" (195mm)

B	11.3" (287mm)

C	6.0" (152mm)

D	8.8" (223mm)

E	6.0" (152mm)

F	9.1" (231mm)

G

H

I

J

K

Wt (lbs)	8 lbs (3.6 kg)

Metris 250

Download PDF Version • Download Installation Manual