Water temperature measurement in an automated terrarium using a Pt1000 sensor
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Анотація
The article considers the application of a platinum resistance thermometer Pt1000 for accurate measurement of water temperature in an automated terrarium. A mathematical model of the resistance–temperature dependence R(T) based on the Callendar–Van Dusen equations is presented. The static and dynamic characteristics of the sensor are analyzed, and the influence of lead wire resistance and measurement channel noise is evaluated. An experiment was conducted to investigate the response of the Pt1000 sensor to a rapid temperature change in a water environment. The obtained curves demonstrate a fast initial temperature jump in the sensor contact zone with hot water, followed by a transient mixing of layers with damped oscillations and gradual establishment of thermal equilibrium. The experimental results confirm a first-order dynamic model with an effective thermal time constant τ and are consistent with analytical estimates of thermal inertia. The obtained dependencies make it possible to improve calibration accuracy and optimize digital filtering algorithms in terrarium microclimate control systems.
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Ця робота ліцензується відповідно до ліцензії Creative Commons Attribution 4.0 International License.
Посилання
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