Advantages
American Meter’s RPM Series Rotary Gas Meters feature improvements over typical meters in their class. Superior construction, flexible mounting, space-saving designs,and optional data storage and transmission features give you a more reliable and versatile meter.
Superior strength
The RPM Series is designed for optimal performance in extreme temperatures and in the harshest conditions.The meter’s extruded aluminum housing is constructed to provide superior strength at extreme bending moment …as much as four times the required strength! As line conditions change and snap-acting loads occur,American’s rotary meters will continue to operate at peak performance.
Flexible space-saving designs
All RPM Series meters mount in either a vertical or horizontal position, depending on available space and convenience. Once installed, all standard and optional equipment can be positioned easily for quick service and convenient reading.
•Standard mechanical register is always in a horizontal position face forward.
•Instrument drive features a compact “footprint” compared to other meters in its class.
•Optional temperature compensator or electronic corrector rotate 360°at 45°increments to accom-modate reading at any meter position.
DS 5600.1
Rotary Gas Meters
Data Sheet
Temperature Compensation Module (below)
The battery-powered temperature compensator mounts directly above the standard mechanical register for com-pact installation. A thermowell in the rotary’s housing detects temperature changes in the gas stream and makes the appropriate adjustment to the meter’s output measurements. The c
ompensator is accurate in climates ranging from -40°F to +140°F (-40°C to 60°C). Use in particularly harsh conditions (down to -40°F) yields no measurable loss in accuracy.
The unit’s memory stores daily corrected and uncorrected volume for one month. A separate data file records a monthly summary of this information for the six previous months of operation.
Electronic T emperature Compensator Features
• TC mounts directly to RPM Series Rotary Meter (factory or field).
• “Constant On” display shows corrected volume.• Magnetic wand allows quick viewing of constants.• Downloadable six-month data storage (laptop or handheld PDA).
•
TCDAS software available for laptop or handheld PDA.
SERIES
TM
SERIES TM
Technical Data and Dimensions
Meter Size
Description Units9.0C  1.5M  3.5M  5.5M7M11M
G16G25G65G100G130G200
Q. Max. rated capacity cfh900150035005500700011000
Max. allowable pressure psig175175175175175175
(MAOP)
Rangeability ±1%>30:1>40:1>75:1>120:1>70:1>120:1
Rangeability ±2%>60:1>75:1>140:1>210:1>115:1>225:1
Start rate cfh<3.0<3.0<4.0<4.4<5.5<5.5
Flow rate @ 0.5", gas cfh90015002000450044506000
Differential 100% flow, gas in. w.c.0.220.35  1.040.68  1.14  1.73
Drive register/I.D.cf/rev10101010/10010/10010/100
Max. operating speed rpm204323582950242520982414
Flange/flange dimension in.  6.75  6.75  6.75  6.759.509.50
Nominal pipe size in.  1.5/2  1.5/222/334
Oil capacity
Vertical mount (gear)oz.  5.6  5.6  2.7  2.7  6.8  6.8
Vertical mount (drive)oz.  6.6  6.6  3.8  3.88.58.5
Horizontal mount (gear)oz.  2.9  2.90.90.9  2.2  2.2
Horizontal mount (drive)oz.  2.9  2.9  1.6  1.6  5.5  5.5
Carton size in.16"H x 12"W x 21.5"L TBD TBD
Shipping weight lbs.263330426575
2
Standard meter with and without temperature compensator Horizontal and vertical mounting
Meter 9.0C    1.5M    3.5M    5.5M (2")  5.5M (3")7M 11M Size
G16
G25
G65G100
G100
G130
G200
A 13.460(341.90)14.960(380.00)12.950(328.90)16.890(429.00)16.890(429.00)16.400(413.56)18.160(461.26)
B    5.810(147.60)  6.390(162.30)  5.390(136.90)7.360(186.90)7.360(186.90)  6.970(177.04)7.980(202.70)
C 7.650(194.30)8.570(217.70)7.560(192.00)
9.530(242.10)9.530(242.10)
9.170(232.92)10.120(257.05)
D 4444
448E (ANSI)5/8-115/8-115/8-115/8-115/8-115/8-115/8-11E (metric)M16X2M16X2M16X2M16X2M16X2M16X2M16X2F (ANSI)  4.750(120.65)  4.750(120.65)  4.750(120.65)  4.750(120.65)  6.000(152.40)  6.000(152.40)7.500(190.50)F (metric)  4.924(125.00)  4.924(125.00)  4.924(125.00)  4.924(125.00)  6.299(160.00)  6.299(160.00)7.087(180.00)G (metric)  6.75(171.5)  6.75(171.5)  6.75(171.5)  6.75(171.5)  6.75(171.5)9.50(241.3)9.50(241.3)Weight
22.7(10.30)30.3(13.70)
27.0
(12.30)
38.5
(17.50)38.5
(17.50)
63.1
(28.62)73.5
(33.31)
lbs. (kg.)Weight with temp 26.0(11.80)33.6(15.30)30.3(13.80)41.8(19.00)41.8(19.00)66.4(30.12)76.8(34.82)
comp.lbs. (kg.)
Meter with instrument drive
Horizontal and vertical mounting
Meter 9.0C    1.5M    3.5M    5.5M (2")  5.5M (3")7M 11M Size
G16
G25
G65G100
G100
G130
G200
A 15.200(386.10)17.020(432.30)15.020(381.50)19.020(483.10)19.020(483.10)18.530(470.66)20.290(515.37)
B    5.810(147.60)  6.390(162.30)  5.390(136.90)7.360(186.90)7.360(186.90)  6.570(166.88)7.980(202.70)
C 9.390(238.50)10.630(270.00)9.630(244.60)
11.660(296.20)11.660(296.20)
11.300(287.02)12.310(312.67)
D 4444448
E (ANSI)5/8-115/8-115/8-115/8-115/8-115/8-115/8-11E (metric)M16X2M16X2M16X2M16X2–M16X2M16X2
F (ANSI)  4.750(120.65)  4.750(120.65)  4.750(120.65)  4.750(120.65)  6.000(152.40)  6.000(152.40)7.500(190.50)F (metric)  4.924(125.00)  4.924(125.00)  4.924(125.00)  4.924(125.00)–  6.299(160.00)7.087(180.00)
G (metric)  6.75(171.5)  6.75(171.5)  6.75(171.5)  6.75(171.5)  6.75(171.5)9.50(241.3)9.50(241.3)Weight
24.3(11.00)31.9(14.50)
28.6
(13.00)
40.1
(18.20)40.1
(18.20)
64.7
(29.34)75.1
(34.16)
lbs.(kg.)
Dimensions in inches (millimeters)
3
Sizing and Ordering Specifications
Using the chart
to the right:
Select the appropriate size rotary meter based on maximum instantaneous flow rate and minimum pressure.
I Size is determined by finding the maximum hourly flow rate in cubic feet per hour (scfh) and the corresponding pressure at that flow rate.  Note: 1000 BTU’s/hr of natural gas equals 1 CFH. (BTU input rating can be found on the equipment/ burner name plate.)
I Find a value larger than the required maximum instantaneous hourly flow rate in the row representa-tive to the specific minimum operating pressure. The proper rotary meter model heads the column. ie. A maximum load of 25,000 scfh at 100 PSIG requires a 3.5M meter.
Corrected capacity at metering pressure – (scfh)
Meter Size
Badged Rating9.0C  1.5M  3.5M  5.5M7M11M
0.25 PSIG900150035005500700011000
1939156536525739730411478
31061176941276486825512971
5
1184197346037233920514465 1014892482579190991158118199
15179529916979109661395721933
20210035008167128331633325667
25240540099355147001870929401
302711451810543165672108633134
403322553712919203012583840602
503933655515295240353059048070
register for604544757317671277693534255538
705155859220047315034009463005
805766961022423352374484770473
9063771062824799389704959977941 10069881164727175427045435185409 11075991266529552464385910392876 120821013683319285017263855100344 125851514192331165203966232104078 130882114702343045390668608107812 140943215720366805764073360115280 1501004316738390566137478112122747 1601065417757414326510882864130215 1701126518775438086884187616137683 1751157019284449967070889993141417 Ordering information
Meter Size
9.0C  1.5M  3.5M  5.5M7M11M
Options G16G25G65G100G130G200 Type english or metric
Connections
NPT or NPT or
flanged flanged flanged flanged flanged flanged
Pipe size  1.5" or 2"  1.5" or 2"2"2" or 3"3"4"
Mounting vertical or horizontal
Counter4, 5 or 6 digit
Output drive regular, TC, or instrument drive
Multiplier10, 100
H.D. pulser yes or no
Local Atm Pressure - (psia)14.37
Sea Level Atm Pressure - (psia)14.73
AMERICAN METER
300 Welsh Road
Building One
Horsham, PA 19044-2234U.S.A.
Phone: 215/830-1800
Fax: 215/830-1890
Website: americanmeter
275 Industrial Road
Cambridge, Ontario N3H 4R7Canada
Phone: 877/461-2626 (toll free)
Phone: 519/650-1900
Fax: 519/650-1917
Website: canadianmeter
SERIES TM
Printed in U.S.A.                                                                      Core – 2000 – 5/02

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