Title :
A source of thermocouple error in radiofrequency electric fields
Author :
Chakraborty, D.P. ; Brezovich, I.A.
Author_Institution :
University of Alabama in Birmingham, Department of Radiation Oncology, Birmingham, USA
Abstract :
When thermocouples are exposed to radiofrequency fields, the unequal resistances of the two wires cause electrical currents to flow through the junction. The junction is thereby heated, resulting in erroneously high temperature readings. Experimental documentation for the effect and a theoretical explanation are presented. Methods to minimise the error are also suggested.
Keywords :
biomedical electronics; radiation therapy; radiofrequency interference; thermocouples; clinical hyperthermia; radiation therapy; radiofrequency electric fields; thermocouple error;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19800606
