RESEARCH PAPER
The Calibration Process and Metrological Analysis of a Transducer Used to Measure Two Physical Quantities
1
Faculty of Electrical Engineering, Bialystok University of Technology, ul. Wiejska 45D, 15-351 Bialystok, Poland
Submission date: 2016-10-10
Acceptance date: 2017-05-19
Online publication date: 2017-06-15
Publication date: 2017-06-01
Acta Mechanica et Automatica 2017;11(2):135-142
KEYWORDS
ABSTRACT
This article presents a way of calibration of an unconventional two-current circuit, named 2J+2R, which consists of two current sources and two referential resistors connected to the circuit mass. This bridge was used to measure the beam deflection and the temperature increase simultaneously with the use of a pair of metal strain gauges. This paper contains theoretical and corrected (after calibration) processing characteristics of the measurement circuit. Calibration coefficients of both inputs, responsible for measurement of the measured values in the places where the strain gauges are attached, were calculated. Moreover, the standard combined and expanded uncertainties of both calibration coefficients were calculated and an uncertainty budget was made.
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| eISSN: | 2300-5319 |
| ISSN: | 1898-4088 |
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