abbr. SJ GMU
ISSN 2657-5841 (printed)
ISSN 2657-6988 (online)
DOI: 10.26408
Assessment of the Accuracy of a Virtual Multi-Channel Temperature Measuring Instrument
Romuald Maśnicki*1 
https://orcid.org/0000-0002-4224-528X Beata Pałczyńska2 https://orcid.org/0000-0002-2404-6500
* Corresponding author
1
Gdynia Maritime University, 81-87 Morska St., 81-225 Gdynia, Poland, Faculty of Electrical Engineering, Department of Marine Electrical Power Engineering, e-mail: r.masnicki@we.umg.edu.pl
2
Gdańsk University of Technology, 11/12 Gabriela Narutowicza St., 80-233 Gdańsk, Poland, Faculty of Electrical and Control Engineering, Department of Metrology and Information Systems, e-mail: beata.palczynska@pg.edu.pl
Abstract:
The multi-channel temperature measurement system developed works with NTC thermistors. The article presents the results of theoretical and empirical evaluation of accuracy obtained in measurement channels. The basis for the theoretical assessment is the mathematical model for each of the measurement channels and the characteristics of the system elements included in the circuits of the measurement channel. Two different methods were used to theoretically estimate the accuracy: the Gauss Formula and the Monte Carlo method. The empirical assessment of accuracy is supported by measurement data collected during the calibration procedures for the device developed and the results of verification measurements performed on a working device. The exemplary results presented of the accuracy assessment, obtained in the selected channel, are representative of the properties of all other measurement channels. The results of both methods of assessing accuracy in measurement channels are very similar, which confirms the assumptions regarding the implementation of the instrument developed and its good metrological properties.
Keywords:
accuracy evaluation, uncertainty, temperature measurement, multi-channel instrument, NTC thermistor
Issue:
Pages:
57
70
Doi:
Submitted:
16.06.2023
Accepted:
19.06.2023
Published:
30.09.2023
Download full text in pdf:
This article is an open access article distributed under a Creative Commoms Attribution (CCBY 4.0) licence
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Romuald Maśnicki