Determination of Thermal Time Constant of a Pt100 Temperature Sensor in Still Oil Using the Time Derivative Method
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Published:2023-05-31
Issue:8
Volume:46
Page:1673-1678
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ISSN:0930-7516
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Container-title:Chemical Engineering & Technology
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language:en
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Short-container-title:Chem Eng & Technol
Author:
Dzinavatonga Kaitano1,
Obileke KeChrist2ORCID,
Makaka Golden2,
Mukumba Patrick2,
Munyaradzi Nyambo Benny1
Affiliation:
1. Zimbabwe Open University Faculty of Science P.O. Box 1119 Harare Zimbabwe
2. University of Fort Hare Department of Physics Private Bag X1314 5700 Alice South Africa
Abstract
AbstractAn alternative method was developed to determine the thermal time constant of a relatively cumbersome temperature sensor in still oil. A relationship between the take‐off gradient, initial temperature, thermal time constant, and final steady‐state temperature was deduced. An experiment was then performed using a Pt100 temperature sensor to test the veracity of the relationship. The Pt100 temperature sensor was subjected to five different step changes in temperature from an initial temperature of 60 °C. This resulted in five exponential curves with five different take‐off gradients. The linearization method was used to determine the thermal time constant as a control experiment. The new method was then applied to the same data set. It agrees very well with the linearization method within the limits of experimental error.
Subject
Industrial and Manufacturing Engineering,General Chemical Engineering,General Chemistry
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