Date post: | 03-Dec-2014 |
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Engineering |
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Vortex Flow Meters- Badger Meter
Product Line Overview
• Vortex-shedding technology• Comprised of two main product lines:
• Stainless steel meters, liquids, gases• Unique combination of ultrasonic + vortex technologies
• Thermoplastic meters; for liquids only• Traditional piezoelectric vortex-shedding technology• New ultrasonic version; RFI plans to complete the R&D
in 2012
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Product Line OverviewStainless steel meters
Available in three designs:• Wafer (mounts between flanges)
• ½” to 4” sizes RWG/RWBG (gas)• 1” to 3” sizes RWL (liquid)
• Flanged (“spool piece” design): 150 or 300-pound ANSI• Available for gas and steam
• Insertion (mounts through side of pipe)• 4” to 36”/60”/48” RNL, RNG, (liquid, gas)
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Primary Markets
Industrial GasMeasurement
Natural Gas/ Biogas
Semiconductor
• The principle operates by looking at pressure fluctuations, the meter uses ultrasonic technology:
• The meter transmits an ultrasonic beam through this vortex pattern. As vortices are shed, the carrier wave of the ultrasonic signal is modified. The change in the carrier wave occurs in proportion to the number of vortices shed.
• The vortices are counted, and this value is converted into fluid velocity.
• This technology is used by the Racine Vortex stainless steel meters.
Vortex Shedding Technology - Ultrasonic
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Vortex SS meter advantages• Ultrasonic component is unique in
industry• Smallest strut (“bluff bar”) in industry
– High sensitivity– High turndown ratios
(70:1 – insertion gas meter)– Very low pressure drop: near zero
• No moving parts
• For the most part, Vortex gas flow meters do not have a minimum pressure requirement.
Racine Vortex and Rosemount1.5” wafer meters 6
Product Line Overview - WaferRWG• Wafer style vortex-shedding flow meter• Average turndown ratio 40:1• Maximum pressure 250 psig (17 bar)• Maximum temperature 300 °F (150 °C)• Sizes: ½”, 1”, 1-1/2”, 2”, 3”, 4”
RWBG• Optimized for “biogas” applications:
(CH4 + CO2)• Less sensitive to moisture content in gas
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Product Line Overview - FlangedRWG option• Flange spool piece
• 316 stainless steel construction• 150 or 300-pound ANSI RF flanges• Can be fabricated to customer-defined length• Ported (1/4” NPT) for pressure sensor• Custom configurations possible
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Product Line Overview - InsertionRNG Insertion Meter• 70:1 turndown ratio• Pipe sizes from 4” to 60”• Mounts via 2” NPT, 2” ANSI or DN50 flange
Options:• Hot tap kit w/ ball valve: insert or remove without
process shut down• Teflon-coated wetted components• Hastelloy-C wetted components
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Vortex meters specifications
Racine Vortex and Rosemount1.5” wafer meters 10
RWG / RNG Gas Meters: common features
• Gas meters are calibrated on an advanced air flow test stand; sonic nozzles (master meters) are calibrated at outside laboratory
• HART Communications protocol• ±1% of reading accuracy• 2 FPS, 0.6m/s minimum velocity• Loop-powered: 24 VDC input power, 4-20 mA output• HART utility PC software application for field configuration
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RWG and RNG Gas Meters: common options• Digital display of primary variable• O-ring materials to meet material compatibility
requirements• Remote-mount electronics option• ATEX hazardous area certification ATEX Ex II 2G ib IIB T4• Temperature compensation of flow rate, via internal RTD
This option also includes the ability to accept the 4-20 mA signal from an external pressure sensor, for a fully compensated, true mass flow reading
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Product Line Overview - WaferRWL• Wafer style vortex-shedding flow meter• Average turndown ratio 10:1• Maximum dependent on pressure 300 psig
(20 bar)• Maximum temperature 300 °F (150 °C)• Sizes: 1”, 1-1/2”, 2”, 3”
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Product Line Overview - InsertionRNL Insertion Meter• 10:1 turndown ratio• Temperature max 148 °C • Stem length 12” to 36”• Mounts via 2” NPT, 2” ANSI or DN50 flange• Optional display version
Options:• Hot tap kit w/ ball valve: insert or remove
without process shut down
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Vortex meters specifications
Racine Vortex and Rosemount1.5” wafer meters 15
Vortex meters specifications
Racine Vortex and Rosemount1.5” wafer meters 16
RVL Series
Thermoplastic Vortex Flow Meters
RVL Series Liquid Vortex• All-plastic wetted parts
(Teflon, PVC, CPVC, PVDF, Polypropylene)
• ± 1% of full scale• 12:1 turndown • 13-30 VDC input power, 3-wire
device• 4-20 mA , 0-5V or pulse output• Wafer, Flare, Butt, NPT
Low Viscosity Fluid Measurement• Ultra-pure water• Acids• Aggressive Chemicals
Markets• Semicon• Pharmaceutical• Chemical Processing• Industrial• Replaces paddle wheels and other mechanical technologies
RVL Series
RVL Operating Principle
• The initial bluff bar creates the vortex.
• Vortices form alternately, from one side to the other causing pressure fluctuations.
• These are sensed by a piezoelectric crystal in the second bluff bar.
• The output from the meter can be either a pulse signal or analog.
Viscosity and Flow Range
Weight Minimum Maximum Flow Range
1 CST 1 12 12:1
2 CST 2 12 6:1
3 CST 3 12 4:1
4 CST 4 12 3:1
5 CST 5 12 2.4:1
6 CST 6 12 2:1
Viscosities above 1 cSt will raise the minimum usable flow rate – Reducing the meter’s effective range
Maximum Fluid Operating Pressure
Temperature PSIG (Kpa)
⁰F. ⁰C. PVC CPVC PVDF
203 95 NR CF CF
150 66 NR 63 (434) 130 (896)
100 38 93 (641) 120 (627) 150 (1034)
70 21 150 (1034) 150 (1034) 150 (1034)
RVL Series Liquid Flow MeterClass 1000 Clean room construction option:
– No more than 1000 0.5 micron particles per cubic foot of air. Requirement for Semicon, Biotech and Medical applications.
Vortex - Material Selection
Select the meter body material that is compatible for the fluid, ensure that the fluid does not contain considerable amounts of fibers or abrasive materials that will cause erosion or affect vortex formation.
Thank you+44 (0)1280 817304 [email protected] www.badgermeter.co.uk
Bell Flow Systems are the UK representative of Badger Meter
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