About Thermocouples/thermowell Sensor
A thermocouple is an electrical device used as a sensor for temperature measurement. This device senses low to high temperatures in the form of voltage changes and displays the temperature digitally by calculating the voltage changes. It was discovered in 1821 by Thomas Seeback and thus have been serving the function since then.
The self-powered thermocouple can measure temperature between -300 and 4000F. However, this range varies according to different types of thermocouple. The advanced digital thermocouple comes up in different styles. This styling varies from simple wires to thermocouple with probes and beaded wire thermocouple. Thermocouple differs from other temperature sensing devices in their constituency and applications. They are used mostly for high-temperature measurements in industries whereas other sensors like a thermometer are rarely used commercially.
Description Of Thermocouples/thermowell Sensor
Thermocouples are versatile industrial temperature sensors used for the temperature measurement .Their working principle is based on thermal electromotive phenomena. They are made of two different metals that produce an MV signal in accordance with the temperature changes. However, thermocouples are very rarely used in isolation. Industrial use of thermocouples for measurement of the temperature of matter like oil and gas and other media involves the assembly of thermocouples with thermowell. This is because thermocouples are sensitive to high pressure and other toxins of industry. The assembly of thermocouples with thermowell protects the sensors with minimal loss of temperature readings. An example of such an assembly is spring-loaded MgO thermocouple/ thermowell assembly. Threaded, Flanged and socket welded preparations of thermocouples are made for a temporary and permanent basis.
Souces : www.silverinstruments.com
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