Temperature Measurement
نویسندگان
چکیده
Temperature is a principle parameter that needs to be monitored and controlled in most food processing operations such as heating, cooling, drying and storage. Temperature sensors have been developed based on different temperature-dependent physical phenomena including thermal expansion, thermoelectricity, electrical resistance, and thermal radiation. Temperature sensors used in agricultural and food industries and research vary from simple liquid-in-glass thermometers to sophisticated and state-of-art thermal imaging. This article focuses only on temperature sensors that generate digital signals readily used for on-line monitoring and automatic temperature control purposes. The article focuses on the commonly used temperature sensors, principles, precision, response time, advantages, and limitations for agricultural and food engineering applications.
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