The use of the thermocouple sensor material is the foundation for the development of the new thermocouple sensor

Thermocouple sensor material is an important basis of thermocouple sensor technology, with the progress of materials science, people can produce all kinds of new type thermocouple sensor. Such as made of polymer thin film thermocouple temperature sensor, optical fiber can be made from pressure, flow, temperature, displacement and so on the many kinds of thermocouple sensor, thermocouple made from ceramic pressure sensor.

polymer can be proportional with the ambient relative humidity adsorption and release of water molecules. Determination of making polymer dielectric capacitor, the change of capacitance, can obtain relative humidity. Using the principle of plasma polymerization polystyrene thin-film thermocouple temperature sensor, a wide range of moisture and wide temperature range, fast response speed, small size, moisture can be used in small space, low temperature coefficient, etc.

ceramic capacitance pressure thermocouple sensor is a kind of dry without intermediary fluid pressure thermocouple sensor. Adoption of advanced ceramic technology, thick film electronic technology, its technical performance stability, drift in full range of error is less than 0. 1%, the temperature drift is small, resistance to overload can reach more range of hundreds of times.

the application of optical fiber is the major breakthrough in the sensing materials, fiber thermocouple sensors compared with the traditional thermocouple sensor has many characteristics: high sensitivity, simple structure, small volume, good corrosion resistance, electrical insulation, light and flexible, easy to realize remote sensing etc. And the combination of fiber thermocouple sensors and integrated optics technology, accelerate the development of optical fiber thermocouple sensor technology. To integrated optics devices to replace the original optical element and passive optical components, optical fiber thermocouple sensor and the signal processing of high bandwidth, low voltage, high reliability, low cost, etc.

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key words: thermal resistance, thermocouple, thermal resistance, platinum resistance, PT100, PT1000, pressure thermocouple sensor, digital temperature thermocouple sensor