M-1002 R11

About Sensus Metering Systems

Q uality is a philosophy--an attitude at Sensus Metering Systems. We take pride in our craftsmanship;
and through a team effort we construct top quality for our customers.
Active Engineering and Research and Development Groups utilize state-of-the-art computer aided engineering
and diagnostic equipment to design and produce gas metering products to meet the uncompromising demands
of today’s gas industry. This special balance of philosophy, attitude, dedicated workers and modern equipment
assures that quality and performance have been skillfully designed into every product.
In our advanced proving room, every Sensus gas metering product is inspected and proved to be accurate.
Sensus products are built with our reputation at stake; a reputation founded on years of experience, earned by
the pride and skills of hundreds of dedicated professionals and backed by sophisticated Quality Assurance
instrumentation used at critical points throughout the manufacturing process.

How to Order Contents

When submitting orders or inquiries, Single Joint Residential Meters 3
please specify the following: Design Features 4 – 5
Module Replacement Program 6
1. Size and type of meter (model number,
standard or temperature compensated, etc.) Tin Meter Replacements 6
Temperature Compensation – Test Meters 7
2. Kind of gas to be metered
Residential Gas Meter Indexes 8
3. Rate of flow to be metered - maximum SCFH Rock Seal “Tamper Obvious” Devices 9
4. Maximum operating and test pressure Special Service
5. Ferrule size LPG Meter, Industrial Gas Measurement
6. Swivel specifications Metric Meters 10
Meter Connections 11
7. Type of index
Swivels 11
8. Special requirements Dimensions/Specifications 12
(sealing, paint, accuracy spec., etc.)

In the Sensus residential gas

meter proving room,
meters are individually
calibrated to ensure accuracy
is within the tolerance
required by our customers.

2
 Single Joint Residential Gas Meters

The Class 250 residential meters combine the latest

design concepts and modern engineering materials
to provide a lighter weight, easier to handle,
more durable meter which requires less maintenance
and offers greater life expectancy.

R-275
275 SCFH

R-315
315 SCFH

The Model #415 continues to be the real workhorse in the

Class 400 residential meter series. Its durable construction permits
operation up to 2" w.c. differential to provide 900 CFH of 0.6
specific gravity gas.

#415
415 SCFH

Note:
All capacities are maximum, based on 0.6 specific gravity gas measured at 4 oz. base pressure
and 60° F at 1/2" w.c. differential pressure – in accordance with B109.1 specifications.
Recommended meter operating temperature range:
-30° F to +150° F. See temperature compensation description page 7.

3
 Design Features

1. Temperature Compensation Element – 2. Crank Bracket – a simplified multi- 3. Valve Seat – close tolerances achieved
a design with increased strength to purpose design incorporating internal through molded phenolic construction
minimize deflection from valve drag, valve guides and index shaft support. minimize seat wear while providing a
the TC element is more rugged and Fine tolerance, attained through much smoother operation with a
linear in movement, thus, more precision molding, provides accurate significantly lower differential.
accurate in compensation. positioning of the crank support. Incorporates easily installed external
Low friction polymer eliminates the valve guides.
need for lubrication.

7. Synthetic Rubber Glands – in the 8. One Piece Flag Rod – closely 9. Molded Port & Pan –with Integral
cover stuffing box and in the valve controlled dimensions improve Diaphragm Stabilizers – one piece
plate to seal the flag rods assure parallelism of all vertical segments. construction of glass fiber reinforced
positive pressure sealing at these Greater distance between bearing material, increases strength and
critical points. The gland design points has been designed to provide eliminates a potential leak point.
produces pressure integrity with lateral stability. Easy to position Integral stabilizers provide positive
a minimum amount of drag. and install. positioning of the diaphragm assembly.
4
 4. Valve Cover and Links – precision 5. Index Drive Shaft – molded “dog” 6. Gaskets – are made of tough, resilient
parts of engineered plastic materials locks to brass index shaft eliminating cork and neoprene composition and
reduce friction and are inert to “slop” often encountered in proving. the linear amount of gasket is an
chemicals and condensates commonly absolute minimum due to “single-joint”
found in gas lines. Simple snap-on design. This significantly reduces the
design with common left and right chance of leakage.
link reduces your parts inventory.
This design reduces the job of
valve replacement.

Gland

10. E-Clips – plated 11. Bodies and Covers – are of die-cast

steel clips install aluminum alloy to provide corrosion
easily, facilitate protection with minimum weight.
repairs, and Meters receive both prime and finish
minimize parts inventory. coats of paint to provide additional
protection and enhance exterior
appearances.
5
 Module Replacement
Program

Because of the “single joint” design of the Sensus

residential meter, easy replacement of all internal
working parts is possible. A new measuring module
can be installed simply by removing and replacing sev-
eral screws.
Listed below are the modules available for our current
line of residential meters. They are available in stan-
dard or temperature compensated construction and
can be inserted into existing bodies and covers and
calibrated in your shop.
This program is important in your long-range planing. Base Module Part Numbers
It means that the Sensus meters you purchase today
Meter Non-Temperature Temperature
can be updated to new condition years from now at Model Compensated Compensated
about two-thirds of the cost of new meters. S-275, R-275,
R-315 001-63-502-06 001-63-502-07
Consider updating your meter population at a fraction
MR-5, MR-8
of the cost of new meters. For your immediate planning, MR-9 001-63-502-19 001-63-502-20
many of the modules listed below fit into older meters – #415 001-41-502-70 001-41-502-71
those currently in your system that need attention now. MR-12 001-41-502-72 001-41-502-73

The Meter Replacements

Sensus offers a complete line of residential meter replacements for the 5 Lt. and 10 Lt. tin meters,
without any need for special connections or modifications to the meter set.

The RT-230 has 5 Lt. connections on 11-1/4"

centers and makes use of the internal working
parts of the R-275 residential meter.

#415
210 SCFH The same R-275 is converted
Note: to an RT-275 by fitting it
All capacities are maximum, based with 10 Lt. connections on
on 0.6 specific gravity gas measured
at 4 oz. base pressure and 60° F
11-1/4” centers.
at 1/2" w.c. differential pressure –
in accordance with B109.1
specifications. Recommended meter RT-275
operating temperature range: 250 SCFH
-30° F to +150° F. See temperature
compensation description page 7.
6
 Temperature Compensation

All Sensus residential gas meters can be equipped with

a bi-metallic element that will automatically correct for
changes in gas temperature and convert line volumes
to the common base temperature of 60° F.
The fundamental difference in a temperature-
compensated meter is the tangent. It features twin
bi-metallic elements as the active or compensating
members. The tangent is mounted in such a way that
temperature variations, causing expansion or
contraction of the bi-metallic element, alter the volume
of gas displaced per revolution of the meter. This color along with a “TC” notation on both the badge and
automatically causes the meter to speed up or slow the meter index. Standard meters have blue badges.
down as required and does not affect valve timing. TC metes have red manufacturer’s badges.
The Sensus TC element ensures stable meter
The typical temperature compensation performance is
operation and accurate correction for gas temperature
within an accuracy band of ± 2% over a flowing gas
variations.
temperature range of -20° F to 120° F.
A temperature compensated meter can be outwardly
identified by a difference in the manufacturer’s badge

Test Meters
Sensus Test Meters are applicable where minute factories. Federal, state and local pollution control
quantities of gas must be measured with a high degree authorities have discovered a need for dependable
of accuracy. They are used in factories, showrooms, precision instruments to sample and evaluate
laboratories, and various testing departments. Some pollutants. Sensus Test Meters are being used
utilities use them to demonstrate to customers the extensively in stack sampling and pollution
amount of gas consumed by ranges, furnaces, clothes monitoring devices.
dryers, and other gas appliances.
Operation
One of the more popular uses of the test meter has All Sensus Test Meters are equipped with a special
been in the area of pollution control. The Environmental test index. This test index has
Protection Agency has set standards of performance a sweep hand which can be
for limiting gaseous and particulate emissions from compared to the sweep
hand on a stopwatch.
Test Meter Models Available
Minute amounts of flow
Capacity – SCFH of 0.6
Model specific gravity gas @ w.c. diff. are precisely measured on
S-275 250
the finely graduated sweep
R-275 275 hand circle. Timing of the
R-315 315 sweep hand accurately
#415 415 determines small flow rates.
Note:
Capacity rating based on connections as per ANSI B-109.1.
7
 Residential Gas Meter Indexes

Standard Circular
Reading Plastic

Standard Direct
Reading Plastic

Test Index

Index Assemblies
S-275, R-275, R-315 #415
Index Number of Teeth Index Number of Teeth
Assembly Assembly
with Drive Gear Index Drive Stuffing Box with Drive Gear Index Drive Stuffing Box
Type Part Number Gear Gear Part Number Gear Gear Dial

001-63-538-05 001-41-538-05

Plastic 001-63-538-10 001-41-538-10

Circular 001-63-538-11 11 11 001-41-538-11 18 18 4 Circle
Reading 001-63-538-15 001-41-538-15
001-41-538-25
001-63-538-62 11 11 001-41-538-25 18 18 5 Wheel
001-63-538-63 11 11 001-41-538-62 18 18 5 Wheel

Plastic 001-63-538-68 11 11 001-41-538-68 18 18 4 Wheel

Direct 001-63-538-69 11 11 001-41-538-69 18 18 4 Wheel
Reading 001-63-538-66 12 24 001-41-538-66 12 24 4 Wheel
001-63-538-70 11 11 001-41-538-70 18 18 4 Wheel
001-63-538-64 16 16 001-41-538-64 16 16 6 Wheel

High
Resolution 001-63-537-97 12 24 001-63-537-97 12 24 4 Wheel
Index

Test 001-63-537-83 16 20 001-41-537-83 13 20

Indexes 4 Wheel
001-63-538-93 12 30 001-41-538-93 22 10

8
 Rockseal “Tamper Obvious” Devices

Rockseal Index Box Front View:

Part Number 001-63-006-05 with drains
The UV Stabilized Clear Polycarbonate Rockseal index 001-63-006-06 without drains
box has molded recesses at the upper left and lower Sensus Clear Polycarbonate Index Box
right corners into which molded plastic plugs are
inserted to cover index box mounting screw heads.
Rockseal Index Box Kit Rockseal index box screws,
1 index box Fil. Hd. Stl. Mach. Screw Rockseal plug
(10-24x11/16”) 001-63-056-05
2 Rockseal plugs Part Number 950525 packaged either
4 screws 100 or 1000
001-63-656-50 with drains pieces per package
001-63-656-51 without drains

Rockseal Plug 001-63-056-05

Rockseal Handhole Plate Device Cross-Section
Handhole Plate Seal Cup 001-63-057-02

Handhole Plate Seal Spacer 001-63-053-01

Handhole Plate 001-60-004-00 Handhole Plate Mounting Screw
Handhole Plate Gasket 001-63-160-50 (#10-24 x 11/16") 950532
Meter Cover Casting

Rockseal Plug Kit

Plug, seal cup, seal spacer and mounting screw. Part number 001-63-656-00
Components packaged individually in lots of 100 pieces per package

Index Assemblies
S-275, R-275,
R-315 #415
Index Assembly
First with Drive Gear
Legend Reading Circle Proving Hand Description Part Number Type

2' 1/2' Standard-C.C.W 001-63-538-05 001-41-538-05

2' Standard-C.C.W. 001-63-583-10 001-41-538-10 Plastic
Cubic Feet 1000 2' T.C. – C.C.W. 001-63-538-11 001-41-538-11 Circular
2'-1/2' T.C. – C.C.W. 001-63-538-15 001-41-538-15 Reading

2'-1/2' 415 on Dial 001-41-538-25

Cubic Feet 10 2'-1/2' Standard-C.C.W 001-63-538-62 001-41-538-25
Cubic Feet 10 2' 1/2' T.C. – C.C.W. 001-63-538-63 001-41-538-62
Cubic Feet 100 2'-1/2' Standard-C.C.W. 001-63-538-68 001-41-538-68

Plastic
Cubic Feet 100 2'-1/2' T.C. – C.C.W. 001-63-538-69 001-41-538-69 Direct
Cubic Feet 100 1' Standard 001-63-538-66 001-41-538-66 Reading

Cubic Feet 100 2' Standard 001-63-538-70 001-41-538-70

Cubic Meters 0.1m 3
0.05m 3
Fully Metric 001-63-538-64 001-41-538-64

High
Cubic Feet 1 1' High Resolution 001-63-537-97 001-63-537-97 Resolution
Index

Cubic Feet .1 .1 Test 001-63-537-83 001-41-537-83 Test

Cubic Meters .01m3 .01m3 Fully Metric Meter Test 001-63-538-93 001-41-538-93 Indexes
9
 Rockseal “Tamper Obvious” Devices

Liquefied Petroleum Gas Metering (LPG)

The Sensus S-275 was designed especially for
the LPG industry. The S-275 has been tested and
proven for all services, and can particularly
measure LP gases from bottle sets, bulk storage
and distribution systems to the house.

Manufactured under the same exacting Quality

Control requirements as Sensus’ residential gas
meters, the S-275 contains the same joint design
and utilizes the same corrosion resistant materials (All Sensus residential meters described in this brochure
that exhibit high lubricity for low differential can be used to measure liquefied petroleum gases.)
operation. The major difference is the connections.
special process gases within their facilities. Sensus’
The S-275 is available with 3/4” FPT connections.
complete line of single joint diaphragm meters
The “S” denotes side-connection.
provides industry with the specialized metering
Industrial Gas Measurement equipment they need to do the job and to do it
Industry today is placing a tremendous amount of accurately. Listed below are some of the special type
emphasis on fuel conservation and fuel allocation service gases used by industry that Sensus meters
within its facilities. Plant accountants are making are capable of handling. See your local Sensus
efforts to keep increasingly accurate records of fuel representative or distributor for further information
gas consumption as well as consumption of various regarding in-plant metering and special gas services.
Gas
Air A 2 Argon CO2 Carbon Dioxide* C 2H6 Ethane H2 Hydrogen† CH4 Methane Ne Neon C 3H8 Propane
C4H10 Butane CO Carbon Monoxide* He2 Helium† Kr2 Krypton N2 Nitrogen C 5H12 Pentane Xe2 Xenon
* Gas must be 100% dry.
† Because of the low density of these gases, meters for this service may not be used in excess of 50% of their pressure rating

Metric Meters
For bell provers calibrated with metric scales, meters must be equipped with a metric output (50 liters).
It is also necessary that the meters have some number of full revolutions of the tangent assembly for that given
metric output. Listed are current meter modules along with their metric counter parts with metric outputs.
For further information Cubic Foot Metric Capacity
about Sensus metric Models Model m3/hr.
meters, consult
your local Sensus S-275 MR-5 7
representative. R-275 MR-8 8
R-315 MR-9 9
#415 MR-12 12

Std. Meters 3/Hr. x 35.31 = Std. Ft.3/Hr. (SCFH) Bars x 14.50 = psi
Std. Ft.3/Hr.(SCFH) x 0.0283 = Std. Meters 3/Hr. psi x .0689 = Bars
Kilograms/centimeter 2 (Kg/cm 2) x 14.22 = psi millimeters water (mm H 2O) x 0.039 = in. w.c.
psi x 0.0703 = Kilograms/centimeter 2 (Kg/cm 2) in. w.c. x 25.4 = millimeters water (mm H 2O)
Kilo Pascals (Kpa) x 0.145 = psi millimeters mercury (mm Hg) x 1.868 = in. w.c.
psi x 6.90 = Kilo Pascals (Kpa) in. w.c. x 0.535 = millimeters mercury (mm Hg)

10
Meter Connections
Swivel
Sensus offers a complete line of meter connections for meter installations. Listed below are
SetSwivel
some of the more common swivel nut and swivel washer sizes available. Common swivels in
Swivel Nut
standard and insulated varieties can be found of page 12. Black iron or galvanized connections
Swivel Washer
are available. For sizes other than those listed, contact your local Sensus representative.
Meter
Swivel Nuts Ferrule
Ferrule Size Swivel Washers Part Number Galvanized Part Number Black Iron Part Number

1-1/4" 001-61-153-02 001-61-165-07 001-41-165-07

10 Lt. 003-51-131-04 003-51-130-00 003-51-230-00
20 Lt. 001-61-154-02 001-61-166-00 001-41-166-00
30 Lt. 001-61-155-03 001-61-167-07 001-41-167-07
45 Lt. 001-62-156-02 001-62-168-00 001-41-168-00
1A Spg. 001-61-153-02 001-61-165-16 001-41-165-16
2 Spg. 001-62-156-03 001-41-130-00 001-41-230-00
3 Spg. 011-14-131-01 001-64-167-02 001-64-168-02

Swivels
Meter Straight Amount Galvanized Black Iron
Ferrule or Galvanized Black Iron Pipe of Insulting Swivel Set Swivel Set
Size Offset Part Number Part Number Size Offset Height Yes/No* Part Number Part Number
1-1/4 S 001-61-165-08 001-41-165-08 1" 2-7/32" No 001-61-365-08 001-41-365-08
O 001-61-165-27 1/2" 2-3/4" 3-5/16" No 001-61-365-27
S 001-61-165-58 1" 2-7/32" Yes 001-61-365-58
O 001-61-165-26 001-41-165-26 3/4" 1" 2-11/16" No 001-61-365-26 001-41-365-26
S 001-61-165-02 3/4" 2-3/8" No 001-61-365-02
S 001-61-165-52 3/4" 2-3/8" Yes 001-61-365-52
O 001-61-165-55 3/4" 2-11/16" 2-15/16" Yes 001-61-365-55
O 001-61-165-05 3/4" 2-11/16" 2-15/16" No 001-61-365-05
10 Lt. S 003-51-134-00 3/4" 2-5/16" No 003-51-334-00
S 003-51-134-50 3/4" 2-5/16" Yes 003-51-334-50
O 003-51-236-50 3/4" 1" 3-1/4" Yes 003-51-436-50
20 Lt. S 001-61-165-11 001-41-165-11 1" 2-3/4" No 001-61-365-11 001-41-365-11
S 001-61-166-15 3/4" 2-3/8" No 001-61-366-15
O 001-62-168-11 3/4" 3-3/16" 3-13/16" No 001-62-368-11
O 001-61-166-13 1/2" 2-11/16" 3-7/16" No 001-61-366-13
S 001-61-165-61 001-41-165-61 1" 2-3/4" Yes 001-61-365-61 001-41-365-61
S 001-61-166-65 3/4" 2-3/8" Yes 001-61-366-65
S 001-61-165-61 001-41-165-61 1" 2-3/4" Yes 001-61-565-61 001-41-565-61
S 001-61-166-15 3/4" 2-3/8" No 001-61-566-15
O 001-61-166-63 1/2" 2-11/16" 3-7/16" Yes 001-61-366-63
S 001-61-165-61 1" 2-3/4" Yes 001-61-665-61
30 Lt. S 001-61-167-02 001-41-167-02 1-1/4" 2-7/8" No 001-61-367-02 001-41-367-02
S 001-61-167-52 001-41-167-52 1-1/4" 2-7/8" Yes 001-61-367-52 001-42-367-52
S 001-61-165-62 001-41-165-62 1" 2-27/32" Yes 001-61-365-62 00-141-365-62
S 001-61-165-12 001-41-165-12 1" 2-27/32" No 001-61-365-12 001-41-365-12
S 001-61-165-62 001-41-165-62 1" 2-27/32" Yes 001-61-565-62 001-41-565-62
S 001-61-167-52 001-41-167-52 1-1/4" 2-7/8" Yes 001-61-467-52 001-41-567-52
45 Lt. S 001-62-168-02 001-41-168-02 1-1/4" 3-7/8" No 001-62-368-02 001-41-368-02
S 001-62-168-52 001-41-168-52 1-1/4" 3-7/8" Yes 001-62-368-52 001-41-368-52
S 001-62-168-04 001-41-168-04 1-1/2" 3" No 001-62-368-04 001-41-368-04
S 001-61-168-54 001-41-168-54 1-1/2" 3" Yes 001-62-368-54 001-41-368-54
S 001-62-168-52 1-1/4" 3-7/8" Yes 001-62-468-52
S 001-62-168-54 1-1/4" 3" Yes 001-62-468-54
#2 Spg. S 001-62-168-21 001-41-168-21 1-1/4" 3-1/8" No 001-62-368-21 001-41-368-21
#3 Spg. S 001-14-134-04 1-1/2" 3-1/16" No 011-14-334-04
*The minimum insulation breakdown voltage for insulating swivels (Assembled Joint) is 2500 volts.
11
 Dimensions

Side View
R-275 – R-315 – #415 R-275 – R-315 – #415 RT-Meter S-275 RT and S-275

Meter Model A* B C D E F G H J
S-275 10-1/8" 8-1/2" 13-1/4" 5-1/4" 3-15/16" 11-1/16"
R-275* 13-23/64" 10-1/8" 8-1/2" 6" 5-1/4" 3-15/16"
R-315* 13-23/64" 10-1/8" 8-1/2" 7' 5-1/4" 3-15/16"
#415* 14-37/64" 11-1/8" 9-3/8" 7" or 8-1/4" 6" 3-15/16"
RT-230 13-5/8" 10-1/8" 8-1/2" 11-1/4" 5-1/4" 3-15/16" 11-1/16"
RT-275 13-5/8" 10-1/8" 8-1/2" 11-1/4" 5-1/4" 3-15/16" 11-1/16"
*The "A" dimension assumes 20 Lt. connections. This may vary slightly for other connections.

Specifications
Max Approxi. No. of Stuffing Meter
Meter Natural W.P. Shipping Rev. Box Shaft Connections
Model Gas Butane Propane Air PSI Wt. Lbs. per Ft 3 Ft 3/Rev. Available

10, 20, 30 Lt.,

R-275 275 150 175 215 5-10 14 8 2
1-1/4", 1A Spg, #2 Spg.
20, 30, 45 Lt.
R-315 315 170 200 245 5-10 14 8 2
1-1/4", 1A Spg, #2 Spg.
20, 30, 45 Lt,
#415 415 225 260 320 10-25 21 6.5 2 1-1/4", 1A Spg,
#2 Spg, #3 Spg.
S-275 250 150 175 195 5-10 14 8 2 3/4" NPT
RT-230 210 5 14 8 2 5 Lt.
RT-275 250 5 14 8 2 10 Lt.

Authorized Distributor
805 Liberty Boulevard
DuBois, PA 15801
800-375-8875
Fax: (814) 375-8460
www.sensus.com/gas
All products
Limited purchased and services performed are subject to Sensus' terms of sale, available at either; http://na.sensus.com/TC/TermsConditions.pdf or 1-800-METER-IT. Sensus reserves the right to
Warranty
modify these terms
Seller warrants and conditions
the Goods in itsdefects
to be free from own discretion without
in materials notice tobythe
manufactured customer.
Seller and in Seller’s workmanship for a period of one (1) year after tender of delivery (the “Warranty Period"). THIS LIMITED WARRANTY
(a) IS IN LIEU OF, AND SELLER DISCLAIMS AND EXCLUDES ALL OTHER WARRANTIES, STATUTORY, EXPRESS OR IMPLIED, INCLUDING, WITH LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A
This document
PARTICULAR is for informational
PURPOSE, purposes
OR OF CONFORMITY TOonly, and OR
MODELS SENSUS
SAMPLES;MAKES NOnot
(b) does EXPRESS WARRANTIES
apply to any Goods which haveIN THIS
beenDOCUMENT. FURTHERMORE,
(I) repaired, altered THERE(ii)
or improperly installed; ARE NO IMPLIED
subjected WARRANTIES,
to improper INCLUDING
use or storage,
WITHOUT
(iii) used or LIMITATION, WARRANTIES
incorporated with ASorTO
other materials FITNESS
equipment, FOR
after A PARTICULAR
buyer or anyone usingPURPOSE AND
the Goods has, orMERCHANTABILITY.
reasonably should have,ANY USE OF
knowledge THEdefect
of any PRODUCTS THAT IS NOT
or nonconformance of theSPECIFICALLY PERMITTED
Goods; or (iv) manufactured,
HEREIN
fabricatedISorPROHIBITED.
assembled by anyone other than Seller, (c) shall not be effective unless buyer notifies Seller in writing of any purported defect or nonconformance with (thirty days) after Buyer discovers or should have
reasonably discovered such purported defect or nonconformance; and (d) shall only extend to Buyer and not to any subsequent buyers or users of the Goods. Buyer shall provide Seller access to the Goods as to which
Buyer claims a purported defect or nonconformance, upon request by Seller, buyer shall, at its own risk and expense, promptly return the Goods in question to Seller’s Plant.