Results 71 to 80 of about 2,645,003 (172)

The development of an ultrasonic Doppler bed-load velocimeter [PDF]

, 1989
Includes bibliography.A instrument has been developed for measuring the velocity of solid particles adjacent to the pipe wall in a solids-liquid pipeline.
Lazarus, Mark Doron
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Calculation Method of Gas Injection Volume of Gas Storage Based on DTS Data

Cejing jishu
At present, the monitoring method of gas injection volume in gas storage is measured by ultrasonic flowmeter. There is a big deviation between the measurement quantity of gas injection main station and the sum of gas injection quantity of many wells ...
LIANG Ming, LYU Yang, DI Yiliang, ZHOU Qiong   +3 more
doaj   +1 more source

Ultrasonic flowmeter [PDF]

, 2019
Cílem práce je návrh a realizace ultrazvukového průtokoměru. Průtokoměr bude sloužit pro měření průtoku vody s teplotou v rozsahu 10-95°C, v měděné trubce nebo vícevrstvé trubce typu PEX/Al/PEX. Průtokoměr musí být příložný, tj. montovaný z vnější strany
Štěpán Dlouhý
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FEASIBILITY JUSTIFICATION FOR A HYBRID ULTRASONIC FLOWMETER FOR NATURAL GAS

The possibility of creating a hybrid ultrasonic flowmeter of natural gas is presented, which combines a fourchannel ultrasonic transit-time method (TOF) and a resonance method. A mathematical description of such a flowmeter is given, the errors of the classical and the proposed flowmeter are estimated, the gain in accuracy and resistance to external ...
Yosyp Bilynskyi, Andrii Stetsenko
openaire   +2 more sources

Construction of a Ultrasonic Gas Flowmeter

Proceedings of the 2nd International Conference on Intelligent Manufacturing and Materials, 2018
Renjie Liu, Feng Wan
openaire   +1 more source

Adaptive Asymmetric Double-Path Ultrasonic Transit-Time Gas Flowmeter

, 2006
In this study we demonstrate that a double-path ultrasonic transit-time gas flowmeter can be extended significantly in its rangeability by shifting the two receiving transducers by the same amount in flow direction, such that the length of one sound path
Gröschl, Martin, Schröder, A., Kupnik, M.   +2 more
core   +3 more sources

Adaptive asymmetric double-path ultrasonic transit-time gas flowmeter

, 2007
In this study we demonstrate that a double-path ultrasonic transit-time gas flowmeter (UFM) can be extended significantly in its rangeability by shifting the two receiving transducers by the same amount in flow direction, such that the length of one ...
Gröschl, Martin, Schröder, A., Kupnik, M.   +2 more
core   +3 more sources

Design of Mine-used Ultrasonic Open-channel Flowmeter

, 2011
In view of problem that open-channel flowmeter ca't work normally because mine water contains impurities of coal powder and sediment which deposit on surface of probe of open-channel flowmeter, a mine-used ultrasonic open-channel flowmeter based on M-Bus
XU Le-nian, WANG Quan, LIU Wei-guang
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Signal analysis of ultrasonic flowmeter based on gas acoustic relaxation

Journal of Physics: Conference Series
Abstract In this essay, a method for analyzing echo signals in ultrasonic gas flow meters based on gas acoustic relaxation is proposed. It was found that acoustic relaxation absorption is the main factor affecting the attenuation of ultrasonic signals, especially when using ultrasound at 200kHz for flow measurements.
Xinze Wang, Bin Yang, Dexu Wang, Yujin Wang   +3 more
openaire   +1 more source

Microprocessor-Based Ultrasonic Flowmeter for Investigations of Two-Phase Flows

, 1999
Block diagram of a microprocessor-based ultrasonic flowmeter working at 0.5…2.4 MHz is presented. Working principle is described. Influence of an acoustic noises on the flowmeter is small and this device may be used for the monitoring of gas-liquid ...
Milius, B. P., Jucius, D.
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