Brodie Meter B271, B274, B281, B284, B291 Technical data
TM
BiRotor Plus
Models B271, B274, B281, B284
DESCRIPTION
The BiRotor Plus™ meter is a volumetric fl ow measuring
device designed for the accurate measurement of petroleum
liquids in a variety of applications. This double case meter
combines the rugged durability and long service life of the
traditional BiRotor meter with the improved accuracy and
pulse output associated with today’s most sophisticated
devices.
Utilizing single or dual outputs, with two non-wetted pickoffs mounted 90° electrically out of phase, the BiRotor Plus
complies with API Level B pulse output standards. Output
signals are amplifi ed and shaped by a preamplifi er mounted
directly on the meter for transmission to accessories such as
totalizing counters, digital readout devices, provers and other
control equipment and instrumentation.
Typical applications includes loading/unloading, batching,
blending and inventory control of petroleum products where
accuracy and repeatability are the deciding factors in meter
selection. It is recommended for loading and unloading tankers, railcars or trucks, pipelines, aircraft refueling, and
general purpose fl ow measurement.
DESIGN FEATURES
• Double case construction avoids loss of calibration
due to changes in pressure or temperature
• New rotor profi le provides high resistance to air
slugs and entrained solids
• No metal-to-metal contact
• Dual pulse output meets Level B pulse security
described in API manual, Chapter 5.5.4.4.
• Explosion proof amplifi er housing
• Single or dual pulse output - non-wetted pickoffs
• Reduced number of parts reduces maintenance
requirements.
• Variety of readout instrumentation available
• Horizontal or vertical mounting
• Class I, Division 1, Group C & D, NEMA 4X, UL, cUL ,
ATEX, Eexd IIBT6, NTEP, CRN (Canada) and Industry
Canada (Canada), OMIL
• Bi-Directional fl ow capability (Consult Factory)
• Capable of operating @ 400 cst. max
viscosity
SUPERIOR PERFORMANCE
Linearity:
±0.10% over 13:1 fl ow range (3”)
±0.075% or better over 30:1 fl ow range (4”)
Repeatability: ±0.01%
Premimum Linearity of less than 0.075% available (4”
only) (Consult Factory)
Pick-off Temperature
Standard: -20 to 180°F (-29 to 82°C)
Design Specifi cations
DSB27X
Revision 08
MATERIALS OF CONSTRUCTION
Housing: Carbon Steel
Measuring Unit
End Plates: Cast Aluminum
Rotors: Cast Aluminum, Hard Anodized
Rotor Shafts: 17-4 ph Stainless Steel
Rotor Bearings: Stainless Steel Ball Bearings
O-Rings: Viton Standard (Other elastomers available)
SPECIFICATIONS - Electrical
Dual channel preamplifi er
Single or dual, non-wetted, reluctance pick-offs
Preamplifi er Performance
Inputs
Supply Voltage: 10 to 30 Vdc
Sensor Type: Reluctance
Type: Sine Wave
Amplitude: 40 mV peak to peak minimum
Outputs
Powered Pulse Output
Type: Square Wave
Frequency Range: 0 to 5 kHz
Amplitude : 0 to 5 V
1 kOhm interval pull-ups, 20 mA max.
Variable Voltage Output
Type: Square Wave
Frequency Range: 0 to 5 kHz.
Amplitude: 0 to Supply Voltage
1 kOhm internal pull-ups, 70 mA max.
Open Collector Output (Per Channel)
Type: Square Wave
Frequency Range: 0 to 5 kHz.
Max. Voltage: 30 Vdc
Max. Current: 125 mA
Max. Power: 0.5 watts
Temperature: -20 to 180°F (-29 to 82°C)
METER SPECIFICATIONS
Represented locally by Ernie Graves Company :: (918) 584-4707 :: info@ErnieGraves.com
Model
B27X 3 80 43 163 425 1610 30 114 550 2080 160 43
B28X 4 100 70 245 700 3030 33 125 1000 3785 92 24
Note: Extended max fl ow is for intermittent usage of 5 hours or less per 24 hour period
Size
inch mm USGPM L/MIN USGPM L/MIN USGPM L/MIN USGPM L/MIN Per USG Per Liter
Standard Flow range Extended fl ow range
Min Max Min Max
Nominal K factor
Nominal
K-Factor - Nominal
TYPICAL PRESSURE DROP CURVE
3” Model B271 & B274; 159 pulses/gallon (42 pulses/liter)
4” Model B281 & B284; 96 pulses/gallon (25 pulses/liter)
Note: K-Factor will vary for each meter
ACCESSORIES
Electronic Register
The BiRotor Plus is compatible with most electronic monitoring and measurement systems.
DIMENSIONS - (For Certifi ed Dimension Prints -
Consult Factory
ORDERING INFORMATION
When ordering, please specify product to be metered, product
viscosity, product temperature range, rate of fl ow, operating
SHIPPING WEIGHT AND VOLUME (APPROX.)
Model Size Unit Weight
3" ANSI 150#
B27X
B28X
Model Size Unit A B C D E F G H J
inch 16-3/4 6 14-5/8 11-1/2 5-3/4 2-5/8 1-3/8 3-5/8 9-19/32
mm 425 152 372 292 146 67 35 92 242
inch 16-3/4 6 14-5/8 11-1/2 5-3/4 2-5/8 1-3/8 3-5/8 9-19/32
mm 425 152 372 292 146 67 35 92 242
inch 17-1/8 6 14-5/8 11-1/2 5-3/4 2-13/16 1-3/8 3-13/16 9-19/32
mm 435 152 372 292 146 72 35 97 242
inch 17-1/8 6 14-5/8 11-1/2 5-3/4 2-13/16 1-3/8 3-13/16 9-19/32
mm 435 152 372 292 149 72 35 97 242
inch 20 6-5/8 16 13 6-1/2 2-3/4 1-1/2 4-1/4 11-1/2
mm 508 168 406 330 165 70 38 108 292
inch 20 6-5/8 16 13 6-1/2 2-3/4 1-1/2 4-1/4 11-1/2
mm 508 168 406 330 165 70 38 108 292
inch 20-5/8 6-5/8 16 13 6-1/2 3-1/16 1-1/2 4-9/16 11-1/2
mm 524 168 406 330 165 78 38 116 292
inch 20-5/8 6-5/8 16 13 6-1/2 3-1/16 1-1/2 4-9/16 11-1/2
mm 524 168 406 330 165 78 38 116 292
B27X
B28X
3" ANSI 150#
DN80 PN16
3" ANSI 300#
DN80 PN 40
4" ANSI 150#
DN100 PN16
4" ANSI 300#
DN100 PN40
DN80 PN16
3" ANSI 300#
DN80 PN 40
4" ANSI 150#
DN100 PN16
4" ANSI 300#
DN100 PN40
LB 193
KG 88
LB 200
KG 91
LB 293
KG 133
LB 300
KG 136
express or implied, regarding the products or services described herein or their use or applicability. Brodie Meter Co., LLC reserves the right to modify or improve the designs or specifications of such products at any time without notice.
The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not to be construed as warranties or guarantees,
19267 Highway 301 North (30461)
TM
PO Box 450 • Statesboro, GA 30459-0450
Phone: 001.912.489.0200 • Fax: 001.912.489-0294
www.brodieintl.com
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