Improving Temperature Measurement Accuracy with Resistance Temperature Detectors
Author Information
Author(s): Li Jiyun, Pei Hongxing, Kochan Orest, Wang Chunzhi, Kochan Roman, Ivanyshyn Alla
Primary Institution: College of Modern Information Technology, Henan Polytechnic, Zhengzhou, China
Hypothesis
Can self-heating errors in resistance temperature detectors be effectively corrected to improve measurement accuracy?
Conclusion
The proposed method significantly reduces the error due to self-heating in resistance temperature detectors, enhancing measurement accuracy.
Supporting Evidence
- The study shows that self-heating can introduce significant errors in temperature measurements.
- Using a multi-bit sigma-delta ADC helps maintain small relative errors in resistance measurement.
- The least squares method effectively reduces residual errors to below the noise level of the ADC.
- Five measurements are sufficient for accurate correction of self-heating errors.
Takeaway
This study shows how to make temperature measurements more accurate by fixing errors caused by the heat from the measuring device itself.
Methodology
The study developed a correction method based on the least squares approach to address self-heating errors in resistance temperature detectors.
Limitations
The effectiveness of the correction method may vary under different operating conditions and requires stable temperature measurements.
Digital Object Identifier (DOI)
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