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Model 1305
DS-VA-1305-eng
January, 2017
Data Sheet
GT130x Series Flowmeter
Model 1305
Variable Area
Glass Tube Variable Area Flowmeters
O-ring Seal Construction
DescriptionDescription
Description
DescriptionDescription
TThe Brooks® Model 1305 glass tube flowmeters provide a low cost means of flow rate
indication. They are designed for applications where the metering accuracy requirements are
not severe. These meters are ideal for purge type service, seal oil systems, bearing lubrication
and cooling water indication. Model 1305 is available with vertical inlets and outlets and
standard materials of construction only.
FeaturFeatur
Featur
FeaturFeatur
eses
es
eses
• Capacity ranges 0.8 to 25 gpm; 3 to 50 scfm
• O-ring seal construction
• Sturdy bolted side-plate construction
• Standard NPT connections
• Vertical inlets and outlets standard
PrPr
oduct Specificationsoduct Specifications
Pr
oduct Specifications
PrPr
oduct Specificationsoduct Specifications
Capacities and Pressure DropsCapacities and Pressure Drops
Capacities and Pressure Drops See Capacities Table
Capacities and Pressure DropsCapacities and Pressure Drops
Max Max
WW
orking Prorking Pr
essuressur
Max
W
orking Pr
Max Max
WW
orking Prorking Pr
PED CategoryPED Category
PED Category SEP
PED CategoryPED Category
Standard Flow AccuracyStandard Flow Accuracy
Standard Flow Accuracy ±10% Full Scale from 100% to 10% of scale reading
Standard Flow AccuracyStandard Flow Accuracy
Optional Flow AccuracyOptional Flow Accuracy
Optional Flow Accuracy ±5% Full Scale from 100% to 10% of scale reading
Optional Flow AccuracyOptional Flow Accuracy
RepeatabilityRepeatability
Repeatability 1% Full Scale
RepeatabilityRepeatability
Scale LengthScale Length
Scale Length 75mm (3”)
Scale LengthScale Length
Scale GraduationsScale Graduations
Scale Graduations Std.: On-tube printed scale (Linear scale, direct reading gpm water or scfm air)
Scale GraduationsScale Graduations
Ambient Temperature LimitsAmbient Temperature Limits
Ambient Temperature Limits 33 to 125°F (1°C to 52°C)
Ambient Temperature LimitsAmbient Temperature Limits
Operating Fluid Temperature LimitsOperating Fluid Temperature Limits
Operating Fluid Temperature Limits Refer to Pressure/Temperature Ratings Tables
Operating Fluid Temperature LimitsOperating Fluid Temperature Limits
ConnectionsConnections
Connections Standard: Female NPT
ConnectionsConnections
Connection OrientationConnection Orientation
Connection Orientation Vertical inlets and outlets
Connection OrientationConnection Orientation
DimensionsDimensions
Dimensions See Dimensions Figure
DimensionsDimensions
Materials of ConstructionMaterials of Construction
Materials of Construction
Materials of ConstructionMaterials of Construction
Metering TubeMetering Tube
Metering Tube Borosilicate glass
Metering TubeMetering Tube
Protective Tube SleeveProtective Tube Sleeve
Protective Tube Sleeve UV stabilized polycarbonate
Protective Tube SleeveProtective Tube Sleeve
WindowWindow
Window Scratch resistant, UV stabilized polycarbonate
WindowWindow
Float & Float StopsFloat & Float Stops
Float & Float Stops 316 stainless steel
Float & Float StopsFloat & Float Stops
HousingHousing
Housing Aluminum side plates
HousingHousing
End FittingsEnd Fittings
End Fittings Brass, 316 stainless steel
End FittingsEnd Fittings
O-ringsO-rings
O-rings Buna-N, Viton®-A fluoroelastomers
O-ringsO-rings
BoltsBolts
Bolts 300 series stainless steel
BoltsBolts
essur
essuressur
e* at 250°Fe* at 250°F
e* at 250°F
e* at 250°Fe* at 250°F
/121°C/121°C
/121°C Refer to Pressure/Temperature Ratings Tables
/121°C/121°C
Opt.: Detachable printed scale (Choice of direct reading units, millimeter or percentage of maximum flow with factor tag)
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PrPr
oduct Specifications - Capacitiesoduct Specifications - Capacities
Pr
oduct Specifications - Capacities
PrPr
oduct Specifications - Capacitiesoduct Specifications - Capacities
WATER AIR @ STP
MET ER PRESSURE D ROP PRESSURE D ROP
SIZE TUBE FLOAT GPM INCHES W.C. FLOAT SCFM INCHES W.C.
8
10
NOTE: ALL AIR FLOWS ARE AT 14.7 PSIA AND 70 DEG F
PrPr
oduct Dimensionsoduct Dimensions
Pr
oduct Dimensions
PrPr
oduct Dimensionsoduct Dimensions
R-8M-75-1 8-RJ-23 2.50 13.0 8-RJ-23 10.00 15.0
R-10M-75-3 10-RJ-83 35.00 35.0
8-RV-8 0.80 8.0 8-RV-8 3.00 9.0
8-RJ-10 1.50 9.0 8-RJ-10 6.00 11.0
8-RJ-30 3.50 19.0 8-RJ-30 14.00 22.0
8-RJ-39 5.00 34.0
10-RJ-80 12.00 18.0 10-RJ-37 24.00 18.0
10-RJ-180 21.00 71.0 10-RJ-90 50.00 71.0
Top View
"C"
"A"
Outlet Connection
"D"
"B"
Scale
Length
Inlet Connection
"A"
Front View
Approximate Dimensions 1305 Flow Indicators
Meter Scale "A"
Size Length (Conn. Size) "B" "C" "D"
8 75 mm 1/2" NPT 7-3/4" (196.85) 2-3/8" (60.33) 2-3/8" (60.33)
10 75 mm 1" NPT 7-3/4" (196.85) 2-3/8" (60.33) 2-3/8" (60.33)
Side View
DIMENSIONS
INCHES (mm)
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PrPr
oduct Specifications - Product Specifications - Pr
Pr
oduct Specifications - Pr
PrPr
oduct Specifications - Product Specifications - Pr
Pr Pr
essuressur
Pr
Pr Pr
MeterMeter
Meter
MeterMeter
SizeSize
Size
SizeSize
#8 200 13.8 SEP 250 121
#10 150 10.3 SEP 250 121
Pr Pr
essuressur
Pr
essur
Pr Pr
essuressur
MeterMeter
Meter
MeterMeter
SizeSize
Size
SizeSize
#8 145 10 SEP 250 121
#10 94 6.5 SEP 250 121
Model CodeModel Code
Model Code
Model CodeModel Code
CodeCode
Code
CodeCode
I-VI-V
I-V Base Model Numbers
I-VI-V
VI-VIIVI-VII
VI-VII Tube Designator Size Tube No.
VI-VIIVI-VII
VIII-IXVIII-IX
VIII-IX Float Designator Size 8 Size 10
VIII-IXVIII-IX
X-XIX-XI
X-XI Scale (see note 1)
X-XIX-XI
XIIXII
XII Materials of Construction Fitting O-ring Side Plates
XIIXII
XIIIXIII
XIII Accessories
XIIIXIII
Notes:
1 Selections C2, J2 and L2 are standard size 8 & 10
Sample Standard Model CodeSample Standard Model Code
Sample Standard Model Code
Sample Standard Model CodeSample Standard Model Code
I-VI-V
I-V
I-VI-V
1305F1305F
1305F
1305F1305F
e Rating for Female e Rating for Female
essur
e Rating for Female
essuressur
e Rating for Female e Rating for Female
Max. OperMax. Oper
Max. Oper
Max. OperMax. Oper
PrPr
essuressur
ee
Pr
essur
e
PrPr
essuressur
Max. OperMax. Oper
Max. Oper
Max. OperMax. Oper
PrPr
essuressur
Pr
essur
PrPr
essuressur
VIII-IXVIII-IX
VIII-IX
VIII-IXVIII-IX
2C2C
2C
2C2C
ee
ee
e
ee
PSIG Bar °F °C
e Rating for Female e Rating for Female
e Rating for Female
e Rating for Female e Rating for Female
PSIG Bar °F °C
DescriptionDescription
Description
DescriptionDescription
VI-VIIVI-VII
VI-VII
VI-VIIVI-VII
J1J1
J1
J1J1
ThrThr
Thr
ThrThr
atingating
ating
atingating
ThrThr
eaded 1305 Units eaded 1305 Units
Thr
eaded 1305 Units
ThrThr
eaded 1305 Units eaded 1305 Units
atingating
ating
atingating
X-XIX-XI
X-XI
X-XIX-XI
C2C2
C2
C2C2
essuressur
e and e and
essur
e and
essuressur
e and e and
eaded 1305 Unitseaded 1305 Units
eaded 1305 Units
eaded 1305 Unitseaded 1305 Units
Max. OperMax. Oper
Max. Oper
PEDPED
PED
PEDPED
PEDPED
PED
PEDPED
Code OptionCode Option
Code Option
Code OptionCode Option
1305F1305F
1305F Threaded
1305F1305F
XIIXII
XII
XIIXII
AA
A
AA
Max. OperMax. Oper
TT
emperemper
T
emper
TT
emperemper
With CRN With CRN
With CRN
With CRN With CRN
Max. OperMax. Oper
Max. Oper
Max. OperMax. Oper
TT
emperemper
T
emper
TT
emperemper
J1J1
J1 8 R-8M-75-1
J1J1
L1L1
L1 10 R-10M-75-3
L1L1
J4J4
J4 8 w/CRN R-8M-75-1
J4J4
L4L4
L4 10 w/CRN R-10M-75-3
L4L4
2C2C
2C 8-RV-8 -
2C2C
5C5C
5C - 10-RJ-37
5C5C
6C6C
6C - 10-RJ-80
6C6C
7C7C
7C - 10-RJ-83
7C7C
8C8C
8C 8-RJ-10 10-RJ-90
8C8C
9C9C
9C 8-RJ-23 -
9C9C
ACAC
AC 8-RJ-30 10-RJ-180
ACAC
BCBC
BC 8-RJ-39 -
BCBC
C2C2
C2 0-100 LINEAR on tube
C2C2
J2J2
J2 GPM WATER SP. GR . 1.0, VISC 1.0 CP on tube
J2J2
L2L2
L2 SCFM AIR @ STP on tube
L2L2
M1M1
M1 Special inscription (special calibration not required)
M1M1
N1N1
N1 Special calibration with scale 10% F.S. GAS
N1N1
N3N3
N3 Special calibration with scale 10% F.S. LIQUID
N3N3
P1P1
P1 Special calibration with scale 5% F.S. GAS
P1P1
P3P3
P3 Special calibration with scale 5% F.S. LIQUID
P3P3
AA
A Brass Buna Aluminum
AA
BB
B 316 Stainless Steel Viton Aluminum
BB
CC
C 316 Stainless Steel Viton Stainless Steel
CC
DD
D 316 Stainless Steel Buna Aluminum
DD
EE
E Brass Viton Aluminum
EE
AA
A None
AA
XIIIXIII
XIII
XIIIXIII
AA
A
AA
TT
emperemper
T
emper
TT
emperemper
atingating
ating
atingating
aturatur
ee
atur
e
aturatur
ee
ApprAppr
ovaloval
Appr
oval
ApprAppr
ovaloval
atingating
ating
atingating
aturatur
ee
atur
e
aturatur
ee
Option DescriptionOption Description
Option Description
Option DescriptionOption Description
The following selections are detachable
aturatur
e Ratingse Ratings
atur
e Ratings
aturatur
e Ratingse Ratings
1305 Meter 1305 Meter
1305 Meter
1305 Meter 1305 Meter
Brass/Aluminum 1.3 kg / 2.9 lbs
WW
eight - Sizes 8/10eight - Sizes 8/10
W
eight - Sizes 8/10
WW
eight - Sizes 8/10eight - Sizes 8/10
Material ofMaterial of
Material of
Material ofMaterial of
ConstructionConstruction
Construction
ConstructionConstruction
Stainless Steel 1.7 kg / 3.8 lbs
Connection Connection
Connection
Connection Connection
NPTNPT
-F-F
NPT
-F
NPTNPT
-F-F
TT
T
TT
ypeype
ype
ypeype
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BrBr
ooks Service and Supportooks Service and Support
Br
ooks Service and Support
BrBr
ooks Service and Supportooks Service and Support
Brooks is committed to assuring all of our customers receive the ideal flow solution for their application, along with outstanding
service and support to back it up. We operate first class repair facilities located around the world to provide rapid response and
support. Each location utilizes primary standard calibration equipment to ensure accuracy and reliability for repairs and recalibration and is certified by our local Weights and Measures Authorities and traceable to the relevant International Standards.
Visit www.BrooksInstrument.com to locate the service location nearest to you.
STST
ARAR
TT
-UP SERVICE -UP SERVICE
ST
AR
T
-UP SERVICE
STST
ARAR
TT
-UP SERVICE -UP SERVICE
Brooks Instrument can provide start-up service prior to operation when required. For some process applications, where ISO-9001
Quality Certification is important, it is mandatory to verify and/or (re)calibrate the products periodically. In many cases this service
can be provided under in-situ conditions, and the results will be traceable to the relevant international quality standards.
CUSTCUST
OMER SEMINARS OMER SEMINARS
CUST
OMER SEMINARS
CUSTCUST
OMER SEMINARS OMER SEMINARS
Brooks Instrument can provide customer seminars and dedicated training to engineers, end users, and maintenance persons.
Please contact your nearest sales representative for more details.
Due to Brooks Instrument's commitment to continuous improvement of our products, all specifications are subject to change without notice.
TRADEMARKS
Brooks ............................................................. Brooks Instrument, LLC
All other trademarks are the property of their respective owners.
AND IN-SITU CALIBRAAND IN-SITU CALIBRA
AND IN-SITU CALIBRA
AND IN-SITU CALIBRAAND IN-SITU CALIBRA
AND AND
TRAININGTRAINING
AND
TRAINING
AND AND
TRAININGTRAINING
TIONTION
TION
TIONTION
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