Title :
A validated model for the electromagnetic flowmeter´s measuring cell: case of having an electrolytic conductor flowing through
Author :
Maalouf, Aline I.
Author_Institution :
Dept. of Eng. Sci., UTC Lab., Oxford
fDate :
6/1/2006 12:00:00 AM
Abstract :
In this paper, the author seeks to perform an online measurement of the electrodes impedances in an electromagnetic flowmeter that could be covered by coatings or not. This online measurement of the electrode impedances determine the magnitude and phase of impedance changes during the operation of the flowmeter. This means that it is possible to assess the accuracy of lumped element models for the measuring cell of the flowmeter. In addition, these measurements are useful to determine the lower frequency limit above which the reading of the induced voltage level of the electromagnetic flowmeter can be carried out with a sufficient signal-to-noise ratio and are useful as well to determine the required input impedance of the preamplifier in the working frequency range
Keywords :
electrochemical electrodes; flowmeters; electrode impedance measurement; electrode/electrolyte interface; electrolytic conductor; electromagnetic flowmeter; impedance spectrometry; impedance spectroscopy; lumped element models; measurement cell; preamplifier; Coatings; Conductors; Electrodes; Electromagnetic measurements; Electromagnetic modeling; Frequency measurement; Impedance measurement; Performance evaluation; Phase measurement; Voltage; Electrode/electrolyte interface; impedance spectrometry; impedance spectroscopy; measurement cell;
Journal_Title :
Sensors Journal, IEEE
DOI :
10.1109/JSEN.2006.874461
