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SB 5500.3
R O T A
R Y
G
A
S
M
E
T
E
R
S
SERIES
TM
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SERIES
TM
Rotary Gas Meters
Rugged construction
built to withstand . . .
Pipe stress
Superior strength at bending moment
ensures this meter won’t “lockup” under
adverse conditions.
On-off flow
The RPM Series’ rugged construction
handles snap-acting loads occurring from
quick variations in line conditions typically
seen in on/off loads.
Climate extremes
Built to last. Dramatic temperature fluctuations
and harsh conditions have no affect on this
meter’s accuracy.
2
American Meter Company introduces
the new RPM Series Rotary Gas Meters.
Designed for commercial and industrial
applications, these new rotary meters
provide accurate flow measurement and
outstanding performance in the most
adverse conditions.
Accurate . . . the RPM Series is
precision engineered to measure natural
gas flow accurately at all standard line
conditions. Originally designed, placed
and proven in Germany, these meters
now have been adapted for the North
American commercial and industrial
natural gas markets. These meters are
also suitable for propane and butane
based gases, as well as other inert
industrial gases.
Tough . . . built of rugged extruded
aluminum, the RPM Series is well
suited for adverse line conditions. The
housing provides greater strength than
other manufacturers’ meters of equal
capacity making them ideal for rough
service where pipe stress and snapacting loads are evident. American’s
compact design enables the RPM Series
to accommodate tight installations.
Versatile . . . standard models
can be modified to fit a variety of
applications. The optional temperature
compensator with electronic data storage,
correcting instruments, and automated
meter reading, plus high and low frequency
pulser options provide flexibility in meeting
your specific needs.
The RPM Series has been engineered
to provide years of reliable service.
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2
4
3
5
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SERIES
TM
1
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Rotary Gas Meters
designed to last
Heavy duty housings
American’s extruded aluminum housing far exceeds
ANSI B109.3 requirements,
providing superior strength
against bending or twisting
from pipe set stress.
Flexible mounting
of accessories
Regardless of the meter’s
mounting position, the
temperature compensator
or correcting instrument
faces the reader.
Mechanical counter
All RPM Series meters ship
with a standard uncorrected
mechanical index. The
magnet driven register
and its housing rotate in
90° increments to facilitate
vertical or horizontal
mounting of the meter.
1
2
3
4
5
6
High frequency
inductive pulser option
The electronic pulser option
produces a flow rate signal
that interfaces with popular
flow computers. The computer scales the meter’s output
and totalizes the volume.
A register “tested tough”
Built of a teflon and glass
reinforced nylon material,
this register is exceptionally
quiet and will not corrode.
The internal register’s low
frequency pulse transmitter
has been tested to 45 million
counts with no failures.
Temperature
compensator module
The “all electronic” RPMTC
has six months of data
storage and includes a port
for downloading corrected
and uncorrected volume.
5
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SERIES
TM
Meter Selection and
Operating Principles
The Rotary Gas Meter complements
American’s existing line of traditional
diaphragm and turbine meters. A rotary
gas meter, like a diaphragm meter, operates
on the positive displacement theory of
measurement by creating a fixed-volume
measuring compartment. In the rotary’s
case, the positive displacement occurs
between the meter’s internal housing cavity
and its rotating impellers.
Deciding whether a rotary, diaphragm,
or turbine meter is the best choice for your
particular application should depend on
the following:
■
pressure of the gas
being measured
■
maximum flow rate
to be measured
■
minimum flow rate
to be measured
■
desired rangeability
Diaphragm
Rotary
Turbine
Maximum gas flow
Demand initiates gas flow
through the meter.
6
Impeller captures a
fixed-volume of gas.
Rotary operating principles
As down stream demand initiates the flow
of gas, a pressure drop develops between
the meter’s inlet and outlet.This creates
an internal force on a pair of hour-glass
shaped impellers that begin to rotate
allowing the flow of gas to start. As the
impellers rotate, gas alternately flows
into two fixed-volume chambers created
between the impellers and the internal
cavity of the meter’s housing. While cycling,
these chambers measure a fixed-volume
of gas and then discharge that gas down
stream filling the demand.
These impellers rotate by way of highly
synchronized precision gears and will cycle
four times during each revolution of the
impeller shaft. During operation, there is no
metal-to-metal contact between the meter’s
housing and impellers.
Measuring cavity opens
releasing gas downstream.
The meter cycles four times
completing one revolution.
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Advantages
American Meter’s RPM Series Rotary Gas
Meters feature many 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
■
optional temperature compensator and
electronic corrector rotate 360° at 45°
increments to accommodate any meter
position
■
instrument drive features a compact
“footprint” compared to other meters in
its class
■
temperature compensator’s LCD is
“constant on” showing the corrected
volume display
“Others”
Instrument drive features a compact design
RPM Series
heavy duty
housing
“Others”
Greater strength
vs. bending moment
Compact design and “constant on” corrected display
7
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SERIES
TM
Temperature
Compensation
Module
Display screens
“Constant On”
Corrected Volume 5, 6, 7, or 8 digits
Uncorrected Volume 5, 6, 7, or 8 digits
Flow Temp. Faren. “F” or Celcius “C”
The flow of natural gas can vary depending
on changes to its absolute temperature
(±5°F = 1% change in volume). To ensure
accurate gas flow measurement at the
meter, a temperature compensator should
be specified.
The battery powered temperature
compensator mounts directly above the
standard mechanical register for compact
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 compensator 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.
Battery Life in percent (%) remaining
Fixed Pressure: PSI or BAR
Flow Constant; (8 digits)
Test screens
Display Test: all LCD segments & decimal points ON
Display Corrected and Uncorrected Multiplier of x10, x100, x 1000
Software Revision & Battery type (AL) alkaline, (LI) lithium
Supercompressability Coefficient (8 digits)
Battery Reset- Percent Remaining, Battery type capacity
Alarm screens
Low Battery
Probe Fault
Additional display and test screens are accessed
by using a magnetic wand.
Check Sum Error
Change Battery
8
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Meter Reading
Systems
Electronic data storage
A customer’s complete six month usage history is available through the temperature
compensator’s electronic data files.
Connecting a laptop computer to the
RPMTC’s interface port, a customer’s daily
and monthly volume can be downloaded
directly into the temperature compensator
data acquisition software.
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.
TRACE, an RF reading system
TRACE is an automated meter reading
system using short-range radio signals.
This system can be used with any type
of American or other manufacturer’s meter.
The TRACE system uses a metermounted transponder to collect all volume
information from the meter or its temperature compensator. An interrogation signal
sent from a mobile or portable reader,
initiates a stream of data flow from the
transponder containing the current meter
reading, an error detection code and an
indication of any meter tampering.
The system does not need any external
connection to operate. Each transponder
has its own lithium battery, and under
normal conditions should last ten years.
American Meter offers portable and mobile
interrogation units, or the Rapid Reader II
which can enter either manual readings or
automated signals for maximum productivity.
The RPMTC stores six months
of corrected and uncorrected
volume usage.
A transponder mounted
to the rotary meter transmits
data to a remote reader.
The Rapid Reader II for
remote meter reading
9
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Page 10
SERIES
TM
Technical Data
and Dimensions
Meter Size
Description
Units
9.0C
G16
1.5M
G25
3.5M
G65
5.5M
G100
7M
G130
11M
G200
Q. Max. rated capacity
Max. allowable pressure
(MAOP)
Rangeability ±1%
Rangeability ±2%
cfh
psig
900
175
1500
175
3500
175
5500
175
7000
175
11000
175
>30:1
>60:1
>40:1
>75:1
>75:1
>140:1
>120:1
>210:1
>70:1
>115:1
>120:1
>225:1
Start rate
Flow rate @ 0.5", gas
Differential 100% flow, gas
cfh
cfh
in. w.c.
<3.0
900
0.22
<3.0
1500
0.35
<4.0
2000
1.04
<4.4
4500
0.68
<5.5
4450
1.14
<5.5
6000
1.73
Drive register/I.D.
cf/rev
10
10
10
10/100
10/100
10/100
Max. operating speed
Flange/flange dimension
Nominal pipe size
rpm
in.
in.
2043
6.75
1.5/2
2358
6.75
1.5/2
2950
6.75
2
2425
6.75
2/3
2098
9.50
3
2414
9.50
4
Oil capacity
Vertical mount (gear)
Vertical mount (drive)
Horizontal mount (gear)
Horizontal mount (drive)
oz.
oz.
oz.
oz.
5.6
6.6
2.9
2.9
5.6
6.6
2.9
2.9
2.7
3.8
0.9
1.6
2.7
3.8
0.9
1.6
6.8
8.5
2.2
5.5
6.8
8.5
2.2
5.5
Carton size
Shipping weight
in.
lbs.
26
42
TBD
65
TBD
75
16" H x 12" W x 21.5" L
33
30
Meter with
Temperature
Compensator
Vertical or
horizontal
mounting
B
A
C
Meter with
Instrument Drive
Vertical or
horizontal
mounting
B
A
C
9.72
(246.9)
12.85
(326.4)
6.75
(171.5)
9.50
(241.3)
8.02 9.40
(203.7) (238.8)
Horizontal View
10
7.79 8.98
(198.9) (228.1)
Vertical View
9.0C - 5.5M = ■
7M - 11M = ■
4.37
(111.0)
6.75
(171.5)
9.55
(242.6)
7.49 8.87
(190.2) (225.3)
Horizontal View
7.50
(190.5)
7.26 8.55
(184.4) (217.2)
Vertical View
9.0C - 5.5M = ■
7M - 11M = ■
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Page 11
Standard Meter
Vertical mounting
B
A
Number of holes = D
Hole size = E
Bolt circle = F
C
Standard Meter
Horizontal mounting
Gas Flow
Gas Flow
A
6.75 9.50
(171.5) (241.3)
B
4.35
(110.5)
4.35
(110.5)
6.75
(171.5)
9.50
(241.3)
C
6.26
(159.0)
7.48
(190.0)
6.26
(159.0)
7.48
(190.0)
9.0C - 5.5M = ■
7M - 11M = ■
9.0C - 5.5M = ■
7M - 11M = ■
Dimensions in inches (millimeters)
Standard meter with and without temperature compensator
Horizontal and vertical mounting
Meter
Size
9.0C
G16
1.5M
G25
A
13.460 (341.90) 14.960 (380.00)
B
5.810 (147.60) 6.390 (162.30)
C
7.650 (194.30) 8.570 (217.70)
D
4
4
E (ANSI)
5/8-11
5/8-11
E (metric)
M16X2
M16X2
F (ANSI)
4.750 (120.65) 4.750 (120.65)
F (metric) 4.924 (125.00) 4.924 (125.00)
Weight
22.7
(10.30) 30.3
(13.70)
lbs. (kg.)
Weight
with
temp
comp.
lbs. (kg.)
26.0
(11.80) 33.6
(15.30)
3.5M
G65
5.5M (2")
G100
5.5M (3")
G100
7M
G130
11M
G200
12.950 (328.90)
5.390 (136.90)
7.560 (192.00)
4
5/8-11
M16X2
4.750 (120.65)
4.924 (125.00)
16.890 (429.00) 16.890 (429.00)
7.360 (186.90)
7.360 (186.90)
9.530 (242.10)
9.530 (242.10)
4
4
5/8-11
5/8-11
M16X2
M16X2
4.750 (120.65)
6.000 (152.40)
4.924 (125.00)
6.299 (160.00)
16.400 (413.56) 18.160 (461.26)
6.970 (177.04) 7.980 (202.70)
9.170 (232.92) 10.120 (257.05)
4
8
5/8-11
5/8-11
M16X2
M16X2
6.000 (152.40) 7.500 (190.50)
6.299 (160.00) 7.087 (180.00)
27.0
(12.30)
38.5
(17.50) 38.5
(17.50)
63.1
(28.62) 73.5
(33.31)
30.3
(13.80)
41.8
(19.00) 41.8
(19.00)
66.4
(30.12) 76.8
(34.82)
Meter with instrument drive
Horizontal and vertical mounting
Meter
Size
9.0C
G16
1.5M
G25
A
15.200 (386.10) 17.020 (432.30)
B
5.810 (147.60) 6.390 (162.30)
C
9.390 (238.50) 10.630 (270.00)
D
4
4
E (ANSI)
5/8-11
5/8-11
E (metric)
M16X2
M16X2
F (ANSI)
4.750 (120.65) 4.750 (120.65)
F (metric) 4.924 (125.00) 4.924 (125.00)
Weight
24.3
(11.00) 31.9
(14.50)
lbs. (kg.)
3.5M
G65
5.5M (2")
G100
5.5M (3")
G100
7M
G130
11M
G200
15.020 (381.50)
5.390 (136.90)
9.630 (244.60)
4
5/8-11
M16X2
4.750 (120.65)
4.924 (125.00)
19.020 (483.10) 19.020 (483.10)
7.360 (186.90)
7.360 (186.90)
11.660 (296.20) 11.660 (296.20)
4
4
5/8-11
5/8-11
M16X2
–
4.750 (120.65)
6.000 (152.40)
4.924 (125.00)
–
18.530 (470.66) 20.290 (515.37)
6.570 (166.88) 7.980 (202.70)
11.300 (287.02) 12.310 (312.67)
4
8
5/8-11
5/8-11
M16X2
M16X2
6.000 (152.40) 7.500 (190.50)
6.299 (160.00) 7.087 (180.00)
28.6
40.1
64.7
(13.00)
(18.20) 40.1
(18.20)
(29.34) 75.1
(34.16)
11
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Page 12
SERIES
TM
Sizing and Ordering
Specifications
Using the chart
to the right:
Corrected capacity at metering pressure – (scfh)
Select the appropriate size
rotary meter based on
maximum instantaneous
flow rate and minimum
pressure.
Badged Rating
0.25 PSIG
Meter Size
9.0C
900
1.5M
1500
3.5M
3500
5.5M
5500
7M
7000
11M
11000
1
3
5
10
939
1061
1184
1489
1565
1769
1973
2482
3652
4127
4603
5791
5739
6486
7233
9099
7304
8255
9205
11581
11478
12971
14465
18199
15
20
25
30
1795
2100
2405
2711
2991
3500
4009
4518
6979
8167
9355
10543
10966
12833
14700
16567
13957
16333
18709
21086
21933
25667
29401
33134
40
50
60
70
3322
3933
4544
5155
5537
6555
7573
8592
12919
15295
17671
20047
20301
24035
27769
31503
25838
30590
35342
40094
40602
48070
55538
63005
80
90
100
110
5766
6377
6988
7599
9610
10628
11647
12665
22423
24799
27175
29552
35237
38970
42704
46438
44847
49599
54351
59103
70473
77941
85409
92876
120
125
130
140
8210
8515
8821
9432
13683
14192
14702
15720
31928
33116
34304
36680
50172
52039
53906
57640
63855
66232
68608
73360
100344
104078
107812
115280
150
160
170
175
10043
10654
11265
11570
16738
17757
18775
19284
39056
41432
43808
44996
61374
65108
68841
70708
78112
82864
87616
89993
122747
130215
137683
141417
1.5M
G25
3.5M
G65
5.5M
G100
7M
G130
11M
G200
■
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.)
■
Find a value larger than
the required maximum
instantaneous hourly flow
rate in the row representative 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.
Local Atm Pressure - (psia)
14.37
Sea Level Atm Pressure - (psia) 14.73
Ordering information
Options
Meter Size
9.0C
G16
Type
Connections
Pipe size
NPT or
flanged
NPT or
flanged
flanged
flanged
flanged
flanged
1.5" or 2"
1.5" or 2"
2"
2" or 3"
3"
4"
Mounting
vertical or horizontal
Counter
4, 5 or 6 digit
Output drive
Multiplier
H.D. pulser
12
english or metric
regular, TC, or instrument drive
10, 100
yes or no
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Page 13
A complete family of gas measurement,
pressure regulation and testing systems
Diaphragm gas meters
Gas industry’s leading supplier
of diaphragm meters. Applications range from residential to
large industrial users offering
a wide range of capacities.
Radial flow valves
These new top entry flow
valves set a new standard for
ease of service and installation. Sizes range from 2" to 6"
diameters with optional
reduced capacity cages.
Turbine gas meters
High performance meters provide accurate measurement of
high volume gas flow. Turbines
are available from 3" to 12" line
sizes and line pressures up to
1440 psig.
Axial flow valves
The AFV can be used for pressure regulation, overpressure
relief, flow control or as an
on/off valve. Sizes range from
2" to 12" diameters with capacity to 37,000,000 SCFH.
Electronic instruments
Electronic correction of temperature or pressure or both at the
meter. Data can be accessed
via the unit’s display, downloaded to a personal computer
or transmitted via modem.
Pressure regulators
Inlet and outlet pressure
regulators with a wide range
of capacities. These regulators
have optional overpressure
and underpressure shutoff and
full capacity internal relief.
Automated meter reading
The transponder unit provides
a data stream containing the
current meter reading, an error
detection code and an indication of any meter tampering.
Test apparatus
SNAP - The Sonic Nozzle Auto
Prover provides unparalleled
speed and accuracy in gas
meter proving.
For more information, contact your regional
American Meter representatives.
13
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Page 14
District Sales Offices
CALIFORNIA, San Francisco
1350 Bayshore Highway
Suite 200
Burlingame, CA 94010
Phone: 650-340-1414
Fax:
650-340-1580
MASSACHUSETTS, Boston
14 Mica Lane
Suite 206
Wellesley, MA 02181
Phone: 617-237-3007
Fax:
617-235-0441
PENNSYLVANIA, Pittsburgh
1725 Washington Road
Suite 605
Pittsburgh, PA 15241
Phone: 412-833-2550
Fax:
412-833-0833
COLORADO, Denver
1750 25th Avenue
Suite 305
Greeley, CO 80631
Phone: 970-353-1631
Fax:
970-353-8928
MINNESOTA, Minneapolis
5100 Eden Avenue
Suite 311
Minneapolis, MN 55436
Phone: 612-927-5485
Fax:
612-927-5301
TEXAS, Dallas
1721 W. Plano Parkway
Suite 221
Plano, TX 75075
Phone: 972-422-2505
Fax:
972-422-2457
GEORGIA, Atlanta
1080 Holcomb Bridge Road
Suite 175
Roswell, GA 30076
Phone: 770-640-0021
Fax:
770-640-0130
NEBRASKA, Omaha
7887 “L” Street
Omaha, NE 68127
Phone: 402-339-2112
Fax:
402-339-1975
VIRGINIA, Richmond
530 Southlake Boulevard
Suite B
Richmond, VA 23236
Phone: 804-379-0089
Fax:
804-379-0320
ILLINOIS, Chicago
2625 Butterfield Road
Suite 200C
Oak Brook, IL 60521
Phone: 630-990-8210; 8229
Fax:
630-990-7529
PENNSYLVANIA, Philadelphia
300 Welsh Road
Building One
Horsham, PA 19044-2234
Phone: 215-830-1853
Fax:
215-830-1891
WASHINGTON, Seattle
3047 78th Avenue, SE
Suite 206
P.O. Box 950
Mercer Island, WA 98040
Phone: 206-232-2261
Fax:
206-232-3586
American Meter Company is committed to a program of continuous quality improvement.
All equipment designed and manufactured by American Meter Company benefits from the
company’s quality assurance standards, which are approved to ISO 9001 or ISO 9002.
American Meter Company has a program of continuous product development and enhancement
and therefore the information in this bulletin is subject to change or modification without notice.
American Meter
300 Welsh Road, Building One
Horsham, PA 19044-2234
Phone: 215-830-1800
Fax: 215-830-1890
Printed in U.S.A.
Canadian Meter
3037 Derry Road, West
Milton, Ontario, L9T 2X6
Phone: 905-878-2361
Fax: 905-878-5758
©2000 American Meter Company
AHA/3M/0501