ДИСТАНЦИОННОЕ ИЗМЕРЕНИЕ СВЕРХМАЛЫХ РАЗНОСТЕЙ ТЕМПЕРАТУРЫ ПОСРЕДСТВОМ ДИФФЕРЕНЦИАЛЬНЫХ РЕЗИСТОРНЫХ ТЕРМОДАТЧИКОВ

V.G.  Melnyk; A.I.  Novik; M.P.  Rubanchuk; O.D.  Vasylenko

No. 3 (2014), Information Measuring Systems in Electric Power Engineering

No. 3 (2014)

Information Measuring Systems in Electric Power Engineering

TELEMETERING OF OVER SMALL TEMPERATURE DIFFERENCES BY MEANS OF THE DIFFERENTIAL RESISTOR THERMOSENSOR

Published 2014-04-28

V.G. Melnyk⁺⁻
A.I. Novik⁺⁻
M.P. Rubanchuk⁺⁻
O.D. Vasylenko⁺⁻

V.G. Melnyk

Institute of Elektrodynamics National Academy of Science of Ukraine, pr. Peremohy, 56, Kyiv-57, 03680, Ukraine

A.I. Novik

Institute of Elektrodynamics National Academy of Science of Ukraine, pr. Peremohy, 56, Kyiv-57, 03680, Ukraine

M.P. Rubanchuk

Institute of Elektrodynamics National Academy of Science of Ukraine, pr. Peremohy, 56, Kyiv-57, 03680, Ukraine

O.D. Vasylenko

Institute of Elektrodynamics National Academy of Science of Ukraine, pr. Peremohy, 56, Kyiv-57, 03680, Ukraine

ARTICLE_13_PDF (Українська)

Keywords

bridge measuring circuit
differential sensor
, thermoresistor
error
impedance мостовая измерительная цепь
дифференциальный датчик
терморезистор
погрешность
импеданс

How to Cite

[1]

Мельник , В. , Новик , А., Рубанчук , М. and Василенко , А. 2014. TELEMETERING OF OVER SMALL TEMPERATURE DIFFERENCES BY MEANS OF THE DIFFERENTIAL RESISTOR THERMOSENSOR. Tekhnichna Elektrodynamika. 3 (Apr. 2014), 082.

Abstract

An actual task is fixing and quantitative estimation of small difference of temperatures in the nearby areas of space in some branches of science and technique. A purpose of this work is consideration of circuit solutions directed on minimization of influence of noise (fields), parasite impedances, and also analysis of basic errors, accompanying the similar measuring. A bridge measuring circuit, working on an alternating current with the use of differential sensors on the basis of miniature thinfilm resistance thermotransducers, providing the best noise stability for the measuring of weak thermal streams, is offered. Analysis of the obtained expressions shows that in the investigated scheme resistance of cable wires are not entered additive errors in the measurement. A relatively small multiplicative error (about 0,1 %), arising from the impact of these and other resistance on the currents in the bridge branches, is constant and can be considerably reduced well-known methods of errors correction. References 7, figures 2.

ARTICLE_13_PDF (Українська)

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