A combined ultrasonic flow meter and binary vapour mixture analyzer for the ATLAS silicon tracker

As a common nature gas measuring tool, ultrasonic flow meter is more and more put into use. Therefore, the accuracy of measurement is what we concern the most. The performance of ultrasonic flow meter is closely related to fluid state which flows through it. This article identified the evaluation method of rectification effect of gasotron and its implementation steps. It proposed an assessing index Lmin based on dichotomy. Computational fluid dynamics method is used to simulate the model of an upstream straight pipe section with a header and plate gasotron, which obtained the assessing index Lmin in five different transmission conditions. Finally, the feasibility of the gasotron is validated against comparing indication errors in different installation conditions: with a header, benchmark, with a header and gasotron.

Download Full-text

New biogas version of ultrasonic flow meter

World Pumps ◽

10.1016/s0262-1762(19)30210-x ◽

2018 ◽

Vol 2018 (11) ◽

pp. 10 ◽

Cited By ~ 2

Keyword(s):

Flow Meter ◽

Ultrasonic Flow Meter

Download Full-text

Effect of velocity profile on accuracy of transit-time ultrasonic flow meter

The Proceedings of the National Symposium on Power and Energy Systems ◽

10.1299/jsmepes.2016.21.d134 ◽

2016 ◽

Vol 2016.21 (0) ◽

pp. D134

Author(s):

Ei MURAMATSU ◽

Daiki HASHIGUCHI ◽

Hideki MURAKAWA ◽

Hitoshi ASANO ◽

Sanehiro WADA ◽

...

Keyword(s):

Velocity Profile ◽

Transit Time ◽

Flow Meter ◽

Ultrasonic Flow Meter

Download Full-text

Flow Calibration and Error Analysis of Dual-Axis Tracking Trough Solar Collector System

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.654.262 ◽

2014 ◽

Vol 654 ◽

pp. 262-265

Author(s):

Jian Ling Deng ◽

Yong Zhu ◽

Zi Li Zhou ◽

Rong Rong Zhai ◽

Ji Feng Song ◽

...

Keyword(s):

Experimental Study ◽

Mass Flow ◽

Solar Collector ◽

Rotation Speed ◽

Flow Meter ◽

Flow Measurements ◽

Flow Meters ◽

Collector System ◽

Ultrasonic Flow Meter

In this paper, a dual-axis tracking trough solar collector system is established, and used to measure and calibrate flow rate at different conditions by using the ultrasonic flow meter and mass flow meter, providing important reference for follow-up experimental study. With the changing of the medium’s temperature and the rotation speed variation of the pump, the two flow meters were used to work together to measure the accurate flow measurements, obtaining the measurement error of the mass flow meter. After that, the reason of error and methods used to reduce the error are analyzed.

Download Full-text

Measurement of lung volume in mechanically ventilated monkeys with an ultrasonic flow meter and the nitrogen washout method

Intensive Care Medicine ◽

10.1007/s00134-003-2028-0 ◽

2004 ◽

Vol 30 (1) ◽

pp. 127-132 ◽

Cited By ~ 20

Author(s):

Andreas Schibler ◽

Jürg Hammer ◽

Ruedi Isler ◽

Christian Buess ◽

Christopher J. L. Newth

Keyword(s):

Lung Volume ◽

Flow Meter ◽

Mechanically Ventilated ◽

Nitrogen Washout ◽

Ultrasonic Flow Meter

Download Full-text

Flow Measurement Wavelet Filtering for Ultrasonic Flow Meter

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.390.445 ◽

2013 ◽

Vol 390 ◽

pp. 445-449

Author(s):

Yu Yang ◽

Wen Wen ◽

Guang Hua Zong ◽

Feng Lin Ding ◽

Yong Li

Keyword(s):

Integrated Circuit ◽

Digital Signal ◽

Power Input ◽

Haar Wavelet ◽

Noise Sources ◽

Flow Meter ◽

Wavelet Filtering ◽

Wavelet Filters ◽

Ultrasonic Flow Meter ◽

Meyer Wavelet

This paper introduces the wavelet filtering to the digital signal processing of ultrasonic flow meter. The noise sources in ultrasonic flow meter are analyzed, and they are divided into three groups: power input, integrated circuit, and other acoustic ways. Some of the noise is not white noise, so traditional noise reduction filter is not effective. Original signal from ultrasonic flow meter is sampled, and four wavelet filters (Haar wavlet, Daubechies wavelet, Symlets wavlet, and discrete Meyer wavelet) with three threshold methods (SURE threshold, Universal threshold, and Minimax threshold) on the signal is compared through experiment. The result shows Haar wavelet with Universal threshold has the best filtering ability for ultrasonic flow meter.

Download Full-text