Calibration tests of pulse-Doppler flow meter at national standard loops

2008 ◽  
Vol 19 (3-4) ◽  
pp. 181-187 ◽  
Author(s):  
Kenichi Tezuka ◽  
Michitsugu Mori ◽  
Takeshi Suzuki ◽  
Yasushi Takeda
Keyword(s):  
National Standard ◽  
Flow Meter ◽  
Doppler Flow ◽  
Pulse Doppler

Ultrasonic pulse-Doppler flow meter application for hydraulic power plants

2008 ◽  
Vol 19 (3-4) ◽  
pp. 155-162 ◽  
Author(s):  
Kenichi Tezuka ◽  
Michitsugu Mori ◽  
Takeshi Suzuki ◽  
Toshimasa Kanamine
Keyword(s):  
Power Plants ◽  
Ultrasonic Pulse ◽  
Flow Meter ◽  
Hydraulic Power ◽  
Doppler Flow ◽  
Pulse Doppler

scholarly journals Effect of Doppler flow meter position on discharge measurement in surcharged manholes

2017 ◽  
Vol 77 (3) ◽  
pp. 647-654 ◽  
Author(s):  
Haoming Yang ◽  
David Z. Zhu ◽  
Yanchen Liu
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Flow Field ◽  
Flow Regimes ◽  
Flow Meter ◽  
Flow Meters ◽  
Flow Discharge ◽  
Doppler Flow ◽  
Sewer Systems ◽  
Computational Fluid Dynamics Cfd

Abstract Determining the proper installation location of flow meters is important for accurate measurement of discharge in sewer systems. In this study, flow field and flow regimes in two types of manholes under surcharged flow were investigated using a commercial computational fluid dynamics (CFD) code. The error in measuring the flow discharge using a Doppler flow meter (based on the velocity in a Doppler beam) was then estimated. The values of the corrective coefficient were obtained for the Doppler flow meter at different locations under various conditions. Suggestions for selecting installation positions are provided.

Laser Doppler Flow-Meter Assessment of Iontophoretically Applied Norepinephrine on Human Finger Skin Circulation

1986 ◽  
Vol 87 (5) ◽  
pp. 634-636 ◽  
Author(s):  
Lars Erik Lindblad ◽  
Lena Ekenvall ◽  
Klas Ancker ◽  
Håkan Rohman ◽  
P Åke Öberg
Keyword(s):  
Laser Doppler ◽  
Flow Meter ◽  
Laser Doppler Flow ◽  
Doppler Flow ◽  
Skin Circulation ◽  
Human Finger ◽  
Finger Skin

Calibration Tests of New Type Flow-Metering System by Ultrasonic Pulse-Doppler Profile-Velocimetry at National Standard Loops

2006 ◽  
Author(s):  
Michitsugu Mori ◽  
Kenichi Tezuka ◽  
Takeshi Suzuki ◽  
Mark Sapia ◽  
Edward Schrull ◽  
...  
Keyword(s):  
Ultrasonic Pulse ◽  
High Accuracy ◽  
National Standard ◽  
National Metrology Institute ◽  
Expanded Uncertainty ◽  
Flow Metering ◽  
Doppler Profile ◽  
Type Flow ◽  
New Type ◽  
Pulse Doppler

To verify high accuracy of a new type flow-metering system based on the measurements of line velocity profiles, eliminating Profile Factors, calibration tests of “UDF”, the flow-metering system by ultrasonic pulse-Doppler profile-velocimetry, were conducted at national standard loops worldwide, including the National Institute of Standard Technology (NIST) of the U.S. Department of Commerce, the National Metrology Institute of Japan (NMIJ) of the National Institute of Advanced Industrial Science and Technology (AIST) in Japan, the Nederlands Meetinstituut (NMI) in Netherlands, and the Centro National de Metrologia (CENAM) in Mexico. The deviations of UDF to the standard loops in the calibration tests for water were found between −0.23% and +0.26% at NIST, 0.1% and 0.4% at NMIJ, and −0.52% and +0.59% at NMI in terms of the average values of each measurement. Following improvements to the UDF System, the calibration tests at CENAM exhibited the deviations between −0.18% and +0.23% and the expanded uncertainty with ±0.21%.

scholarly journals Measurement of Blood Flow of the Brachial Artery in Lateral Position by a Doppler Flow Meter (DFM-4500)

1984 ◽  
Vol 54 (6) ◽  
pp. 263-268
Author(s):  
Koichi KAMIMURA ◽  
Toru SATO ◽  
Hiroko NAGI ◽  
Toshie NOHMI ◽  
Akira FUJII
Keyword(s):  
Blood Flow ◽  
Brachial Artery ◽  
Lateral Position ◽  
Flow Meter ◽  
Doppler Flow
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