Thermocouple is what _ instrument7

Commonly used in low temperature zone thermocouple principle of thermocouple is a kind of temperature measuring element. Thermocouple resistance using material when the temperature changes itself along with the change of characteristics to measure temperature. Thermocouple heated parts ( Thermal element) Is uniform with fine wire wrapped around the insulation materials on the skeleton of measured medium in the presence of temperature gradient, temperature is measured by thermal element is located within the scope of average temperature in the medium layer. Its main characteristic is high accuracy, stable performance. The platinum thermocouple measuring accuracy is high. Structure features: thermocouple is usually and digital display table, recording instrument and electronic regulator. It can be directly measured from various production process 200 ℃ to + 600 ℃ within the scope of the liquid, steam and gas medium and the temperature of the solid surface. Wz series thermocouple assembly are typically installed by thermal components, fixtures and junction box and other major parts, with high measurement precision, stable and reliable performance, etc. With pt100 platinum thermocouple widely used in practical application. ( 2) WZPK series platinum thermocouple thermocouple is by the thermal components, wire, insulation materials, stainless steel casing combination solid body, it has the following advantages of slender shape, heat fast response time, vibration resistance, long service life, etc. ( 3) Flameproof thermocouple junction box flameproof thermocouple with special structure, the junction box inner explosive mixed gas by affected by sparks or electric arc explosion limit within the junction box, production site won't explode. ( 4) Capillary thermocouple ends thermocouple temperature components made by special processing of the resistance wire, close to the face in the thermometer. Compared with general axial thermocouple, it can reflect more correctly and quickly measured end face of the actual temperature, suitable for measuring the surface temperature. Thermocouple is a kind of temperature sensor, it is smaller than the diameter of a prefabricated thermocouple, flexible, good vibration resistance, suitable for installation in the case of prefabricated thermocouple can't install, our factory production WRPK series thermocouple used to introduce thermocouple temperature measuring element, therefore, is accurate, sensitive, quick thermal response time, stable quality, long service life, etc. Thermocouple protective mining have stainless steel, full of high-density oxide material inside insulation, therefore, it has a very strong pollution resistance and mechanical strength, suitable for installation in harsh environment. Thermocouples can be used to measure - 200 - 500 ℃ temperature range, can be connected directly with copper wires and secondary instrument use, because it has good electrical output characteristics, can be adjusted to display instrument, recorder, instrument, scanner, data recorder and computer provide accurate temperature signal. Thermocouple works under the effect of temperature, thermocouple wire resistance change and change, display instrument will indicate the resistance value of the corresponding temperature thermocouple.