Following is the comparison between the three temperature transducers:
|1||Working principle||They are sensors that measure temperature by correlating the resistance of the RTD element with temperature||They are a type of resistor with an electrical resistance that possesses either a negative or positive temperature coefficient of resistivity||A thermocouple consists of two dissimilar metals, joined together at one end. When the junction of the two metals is cooled or heated a voltage is produced that can be correlated back to the temperature (Seebeck effect)|
|2||Temperature Range||-240°C to 649°C||-100°C to 500°C||-267°C to 2316°C|
|6||Cost||Slightly expensive||Economical||Very cheap|
|10||Manufacturing Material||Films or coils of metal such as platinum||Ceramic material semiconductors like cobalt, manganese, or nickel oxides coated in glass||Created by welding two dissimilar materials like Iron-Constantan, Nicrosil-Nisil|
|11||Applications||Air conditioning, plastic processing, microelectronics, exhaust gas temperature,measurement, etc.||Potential divider networks, temperature compensation, circuit protection, volume control, etc.||Kiln temperature measurement, rocket engines, fog machines, etc.|
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