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| Uncertainty Evaluation on Temperature Sensor’s Dynamic Response Based on Water Facility |
| LIU Bo,WANG Chong-yuan,ZHU Peng-fei |
| Shanghai Institute of Measurement and Testing Technology, Shanghai 201203, China |
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Abstract For nuclear fast response temperature sensor re-test, the calibration facility of temperature sensors dynamic response in flowing water was established. The calibration uncertainty of every factor was evaluated. In the small time region, approximate linearity between voltage and time exists, indicated by oscilloscope. Based on the approximation, uncertainty propagation was realized from temperature to time parameters. Uncertainty evaluation was conducted for a nuclear fast response platinum resistance temperature sensor’s calibration. The result showed that the expanded uncertainty of time constant was U=27ms (k=2). The oscilloscope cursor resolutions of voltage and time are the important factors for the uncertainty. The results can provide reference for the re-test procedure.
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Received: 15 September 2019
Published: 10 October 2020
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2020, Vol. 41 
