Results 131 to 140 of about 251,869 (196)
Thermal Gas Flow Sensor Using SiGe HBT Oscillators Based on GaN/Si SAW Resonators. [PDF]
Micromachines (Basel)Cui W +8 more
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A Comparative Evaluation of Powder Characteristics of Recycled Material from Bronze Grinding Chips for Additive Manufacturing. [PDF]
Materials (Basel)Uhlmann E +7 more
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IoT-Based Precision Irrigation System Featuring Multi-Sensor Monitoring and Scheduled Automated Water-Control Gates for Rice Production. [PDF]
Sensors (Basel)Mahmud MNH, Dong Y, Alam MM, Sharmin J.
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Coupling Low-Frequency Ultrasound to a Crossflow Microfiltration Pilot: Effect of Ultrasonic Pulse Application on Sono-Microfiltration of Jackfruit Juice. [PDF]
Membranes (Basel)Miramontes-Escobar HA +7 more
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Transactions of the Institute of Measurement and Control, 1979
Recent accounts of ultrasonic flowmeters usually concentrate on either transit time or Doppler types. Although these are the most common types in use today, at least six other types exist. Part 1 of this two-part paper describes the physical principles of eight types of ultrasonic flowmeters, along with some general considerations (flow profile ...
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Recent accounts of ultrasonic flowmeters usually concentrate on either transit time or Doppler types. Although these are the most common types in use today, at least six other types exist. Part 1 of this two-part paper describes the physical principles of eight types of ultrasonic flowmeters, along with some general considerations (flow profile ...
openaire +1 more source
Development of the ultrasonic flowmeter
Ultrasound in Medicine & Biology, 1975Abstract The ultrasonic flow-velocity meter for blood flow measurement has developed in two directions. The first type is the transit-time velocity meter, and the second, the Doppler-shift type. For clinical measurement the transcutaneous Doppler instrument is now in routine use and has largely superseded the transit-time type. Doppler-shift velocity
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IRE Transactions on Medical Electronics, 1959
A pulsed ultransonic flowmeter has been developed specifically for the simultaneous measurement of blood flow through various major blood vessels in the intact unanesthetized animal. The flow section is a small (1-3 cm) lucite cylinder which is clamped about the blood vessel. Piezoelectric crystals are mounted on the flow section so that bursts of 3-mc
D. L. Franklin +3 more
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A pulsed ultransonic flowmeter has been developed specifically for the simultaneous measurement of blood flow through various major blood vessels in the intact unanesthetized animal. The flow section is a small (1-3 cm) lucite cylinder which is clamped about the blood vessel. Piezoelectric crystals are mounted on the flow section so that bursts of 3-mc
D. L. Franklin +3 more
openaire +1 more source
Ultrasonics, 1969
Abstract By time multiplexing two signals, a newly designed flowmeter measures fluid flow-rate using only a single transmission path for pulsed ultrasound. In this flowmeter, transducers act as both transmitters and receivers to overcome the large errors introduced by small differences between the two paths in previous designs.
W.R. Loosemore, A.H. Muston
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Abstract By time multiplexing two signals, a newly designed flowmeter measures fluid flow-rate using only a single transmission path for pulsed ultrasound. In this flowmeter, transducers act as both transmitters and receivers to overcome the large errors introduced by small differences between the two paths in previous designs.
W.R. Loosemore, A.H. Muston
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IEEE Symposium on Ultrasonics, 2002
A novel method of a clamp-on ultrasonic flowmeter is proposed. With this method, a widebeam is examined theoretically by the application of spatial frequency analysis. It is demonstrated that plate modes generated in a pipe wall exert bad effects on flowrate measurement. This method can reduce such effects.
R. Motegi, S. Takeuchi, T. Sato
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A novel method of a clamp-on ultrasonic flowmeter is proposed. With this method, a widebeam is examined theoretically by the application of spatial frequency analysis. It is demonstrated that plate modes generated in a pipe wall exert bad effects on flowrate measurement. This method can reduce such effects.
R. Motegi, S. Takeuchi, T. Sato
openaire +1 more source