Dry calibration procedure of electromagnetic flowmeter for open channels

Author

Michalski, Andrzej

Author_Institution

Inst. of the Theory of Electr. Eng. & Electr. Meas., Warsaw Univ. of Technol., Poland

Volume

49

Issue

2

fYear

2000

fDate

4/1/2000 12:00:00 AM

Firstpage

434

Lastpage

438

Abstract

This paper presents a simple approach to a dry calibration procedure for the electromagnetic flowmeter for both conducting and nonconducting open-flow channels. The author focuses on two main problems: variable water level in the measurement zone and variable water or ground conductivity and their influence on a flow signal. Based on the existing numerical model of electromagnetic flowmeter, the author describes the main idea of transfer function calculation with a few exemplary results. As an approximation instrument for a final form of correction function, the sigmoidal two-layer neural network has been applied

Keywords

calibration; channel flow; electromagnetic devices; flowmeters; transfer functions; Poisson equation; backpropagation; conducting open-flow channels; correction factors; correction function; dry calibration procedure; electromagnetic flowmeter; nonconducting open-flow channels; numerical model; sigmoidal two-layer neural network; transfer function calculation; variable ground conductivity; variable water conductivity; variable water level; Calibration; Coils; Conductivity; Density measurement; Electrodes; Electromagnetic measurements; Fluid flow measurement; Magnetic field measurement; Magnetic liquids; Ultrasonic variables measurement;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.843092

Filename

843092