An Numerical Analysis Approach for a Novel Electromagnetic Flow Meter with Multi-Electrode

Compared with other flow meters, the theory of electromagnetic flow meter is well developed. Until now, we are able to predict the three dimensional characteristics of this kind of flow meters with reasonable accuracy. This has given much help to the designers to improve the flow meters. On the other hand, the theory can offer a tool for the users of this kind of flow meters to judge the application situations, estimate the possible measurement error, etc. This paper introduces the recent work of the author on the theory of the electromagnetic flow meter. The basic physical conceptions and equations are given with a brief history review of the theory research. Several examples are given of using the theory to analyze the meters’ behavior in different application situations. They are: effect of the conducting pipe connections; errors caused by a pipe wall of different electromagnetic properties; gas-liquid flow and errors caused by a relative motion of the probe.

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The Function of the Conus Arteriosus in the Port Jackson Shark, Heterodontus Portusjacksoni

Journal of Experimental Biology ◽

10.1242/jeb.46.2.373 ◽

1967 ◽

Vol 46 (2) ◽

pp. 373-382

Author(s):

G. H. SATCHELL ◽

M. P. JOHNES

Keyword(s):

Blood Pressure ◽

Ventricular Ejection ◽

Flow Meter ◽

Back Flow ◽

Electromagnetic Flow ◽

Ventricular Relaxation ◽

Ventricular Systole ◽

Ventral Aorta ◽

Electromagnetic Flow Meter ◽

Port Jackson

1. Blood pressure recordings were made above and below each of the three tiers of valves in the conus of Heterodontus portusjacksoni. Flow in the ventral aorta was recorded with an electromagnetic flow-meter. 2. It was shown that the lower conal valves close first and that this closure occurred before the end of ventricular systole. 3. The middle conal valves closed before the lower ones opened. The closure of both of these sets of valves was caused in part by the circumferential decrease due to conus systole, and in part by the back flow this engendered. 4. The upper conal valves closed as the middle ones opened at the end of conal systole. 5. Paralysing the conus with topical tricain rendered the lower and middle conal valves incompetent and caused the upper conal valves to be closed following ventricular relaxation with an increase in back flow. 6. The hypothesis is advanced that the conus serves to postpone the closure of the upper tier of valves until the negative intrapericardial pressure generated by ventricular ejection has decayed to a lower value.

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Technical features and application of electromagnetic flow meter

2020 International Conference on Communications, Information System and Computer Engineering (CISCE) ◽

10.1109/cisce50729.2020.00008 ◽

2020 ◽

Author(s):

Baoyang Chen ◽

Yong Zhou ◽

Tongquan Huang ◽

Songdong Ying ◽

Tongcai Chen

Keyword(s):

Flow Meter ◽

Electromagnetic Flow ◽

Electromagnetic Flow Meter ◽

Technical Features

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The Effect of Abscission of Insulation Lining of Electromagnetic Flowmeter on Output Signal

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.226-228.1910 ◽

2012 ◽

Vol 226-228 ◽

pp. 1910-1915

Author(s):

Song Gao ◽

Bin Li ◽

Shi Yi Yin ◽

Xue Jing Li

Keyword(s):

Output Signal ◽

Short Circuit ◽

Electromagnetic Flowmeter ◽

Fluid Temperature ◽

Flow Meter ◽

Electromagnetic Flow ◽

Electromagnetic Flow Meter ◽

Pressure Changes ◽

Relationship Of ◽

The Relationship

In pipe of electromagnetic flowmeter must be installed internal insulation lining to prevent the electromagnetic flowmeter signal is short circuit by metal pipe. However, in the process of using the electromagnetic flow meter, insulation lining is easy to fall off because of the fluid temperature and pressure changes, thus lead to the output signal of the electromagnetic flowmeter is changed. The effect of electromagnetic flowmeter insulation lining fall off to the output signal is analyzed by the theory of electromagnetic flow meters weight function. Get the relationship of the output signal and the insulation lining drop area and position. The paper provides a theoretical analysis method for the effect abscission of insulation lining of electromagnetic flow meter on output signal.

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