Title :
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
Abstract :
The author presents a simple approach to a dry calibration procedure for the primary transducer of an electromagnetic flowmeter for open conducting and nonconducting flow channels. The author has focused on two main problems: variable water level in the measurement zone and variable environmental conductivity, and their influence on the flow signal. Based on an existing numerical model of the primary transducer, the author has described the main idea of transfer function calculation with a few examples. 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; dry calibration procedure; electrode potential; electromagnetic flowmeter; generalisation; measurement zone; numerical model; open channels; primary transducer; sigmoidal two layer neural network; transfer function calculation; variable environmental conductivity; variable water level; Calibration; Coils; Conductivity; Electrodes; Electromagnetic fields; Process design; Shape; Transducers; Transfer functions; Voltage;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 1999. IMTC/99. Proceedings of the 16th IEEE
Conference_Location :
Venice
Print_ISBN :
0-7803-5276-9
DOI :
10.1109/IMTC.1999.777013
