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Supplier: American Water Works Association (AWWA)
Description: Scope: This standard describes transit-time ultrasonic flowmeters for water supply service application in pipes running full. An ultrasonic flowmeter is a meter that uses acoustic energy signals to measure liquid velocity. There are currently two distinct types of ultrasonicShow More
Standards and Technical Documents - Ultrasonics - Continuous-wave Doppler systems - Test procedures -- IEC TS 61206:1993
Description: Describes the test methods for measuring the performance of continuous-wave ultrasonic Doppler flowmeters, velocimeters, or foetal heart detectors and special Doppler test objects for determining various performance properties of Doppler ultrasound systems. Does not includeShow More
Standards and Technical Documents - Advanced Hybrid Ultrasonic Flow Meter Utilizing Pulsed-Doppler Method and Transit Time Method - ETCON 2004
Description: Hybrid type ultrasonic flow meter has been worldly at first developed as non-intrusive type one, combining UVP (Ultrasonic-Doppler Velocity Profile) method and transit time method, which have complementary roles to each other against bubbles and/or particles contained in fluid.Show More
Flow Meters - S3X1JA - Ultrasonic Hybrid Doppler/Transit Time Flowmeter, for 1/2" to 2" Pipe, 0.25 to 30 FPS (0.07 to 9 MPS) -- GO-32616-80Supplier: Cole-Parmer
Description: hybrid flowmeters measure fluid flow using either the Doppler or transit|time methodâ€”making the meter suitable for use with nearly any fluid that can conduct|sound waves, the technology works with clean or dirty fluids. The meters use the latest advancements in digital
- Type: Ultrasonic Meter
- Electrical Output: Analog Current
Standards and Technical Documents - Hydrometry -- Measurement of liquid flow in open channels under tidal conditions -- ISO 2425:2010
Description: of the computation for a single vertical. Similar computations are possible for other verticals. Annex D describes the determination of tidal flow using an acoustic Doppler velocity meter.Show More
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Differentiating Between Doppler & Transit Time Ultrasonic Flow Meters
Ultrasonic flow meters are non-intrusive devices that use acoustic vibrations to measure the flow rate of liquid. There are two types, Doppler and transit time. Both are designed to clamp onto the outside of the pipe without breaking the line or interrupting the flow. This also eliminates pressure
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H Control of Thruster For AUV
The ambient axial fluid velocity is measured by 10 MHz acoustic doppler flow meters and the prop rotation velocity is calculated from the output of the prop position sensor.
Geothermal Program Overview: Fiscal Years 1993-1994
As a complementto the rolling float meter, an acoustic doppler flow meter was evaluated for accurate measurement of the mud flow into the well during drill- ing.
Geothermal program overview: Fiscal years 1993--1994
As a complementto the rolling float meter, an acoustic doppler flow meter was evaluated for accurate measurement of the mudflow into the well during drill- ing.
Federal Geothermal Research Program Update Fiscal Year 1995
Acoustic Doppler flow meters would be ideal for this application because they are non-intrusive, having transducers that clamp onto the outside of the rig standpipe.
MACROINVERTEBRATE RESPONSE TO FLOW CHANGES IN A SUBALPINE STREAM: PREDICTIONS FROM TWO‐DIMENSIONAL HYDRODYNAMIC MODELS
Flow boundary conditions were obtained using a FlowtrackerW (SonTek/YSI, San Diego, California) Acoustic Doppler flow meter near the location of a stage recorder placed by NPS personnel at the upstream end of the study site.
Identification and correction of water velocity measurement errors associated with ultrasonic Doppler flow monitoring
2000) A laboratory evaluation of Unidata’s Starflow Doppler flowmeter and MGD Technologies acoustic Doppler flow meter (ADFM) [online]. USBR. http:// www.usbr.gov/pmts/hydraulics_lab/tvermeyen/starflow/ index.html [accessed 3 January 2007]. WaND.
Surface Waves And Atmospheric Near-surface Layer Variability Above Features of Bottom Topography
Data on the current speed distribution in the upper ocean layer, obtained with an acoustic Doppler flow meter are presented in Fig. 1b.
Federal Geothermal Research Program Update Fiscal Year 1998
Verify the advantage of using commercial acoustic Doppler flow meters and transit time meters to accurately measure drilling fluid inflow rates in geothermal drilling.
Laboratory and numerical evaluation of borehole methods
for subsurface horizontal flow characterization.
The conclusions of this report were that the particle tracking type measurements (fixed focal point colloidal borescope and acoustic Doppler flow meter ) had a wide range of results, were not comparable with each other, not repeatable and varied considerably over short vertical …
Some Observations on Irrigation Flow Measurements at the End of the Millennium
New Primary Device for Channels and Pipelines In about 1997 a relatively new acoustic Doppler-based flow meter, entered the marketplace called the ADFM Velocity Profiler™ ( Acoustic Doppler Flow Meter , MGD Technologies, San Diego, Calif.).