Thermocouple and supported platinum thermocouple what is the difference between the two temperature gauges _ instrument

More supported platinum thermocouple as a kind of temperature sensor, can simultaneously measure the different positions, multiple point temperature, suitable for installation in duct stenosis and require rapid response, miniaturization and other special occasions. But for - 200 ~ 500 ℃ temperature range of gas, liquid and solid temperature testing, and can be connected through the thermocouple wire and display or control instrument use, because it has good electrical output characteristics, to display, data recorder, recorder, controller, scanner and computer to provide accurate input values. More supported platinum thermocouple is made up of junction box and the thermocouple elements, install fixtures and other major parts of the new type of temperature sensor, can be in - 200 ~ 500 ℃ temperature measurement of various occasions more supported platinum thermocouple self-provided external protecting tube by the user, otherwise can only be used in the atmospheric pressure and the corrosive environment. Type thermocouple thermocouple is widely applied in industry, but because of its temperature range makes his application by certain restrictions, thermocouple temperature measurement principle is based on a conductor or semiconductor resistance changes with the change in temperature. Its many advantages, can also remote transmission signal, high sensitivity, strong stability, compatibility and accuracy are better, but you need to power, can't instantaneous measured the change in temperature. Industrial thermocouple usually use Pt100, Pt10, Cu50, Cu100, platinum thermocouple temperature measurement range is generally 200 - below zero 800 ℃, copper thermocouple is 40 to 140 ℃ below zero. As to distinguish the type of thermocouple and thermocouple compensation wire, but it does not need and is cheaper than thermocouple. Ordinary thermocouples from the thermocouple temperature measurement principle, the measured the change in temperature is directly measured by thermocouple resistance change, therefore, the wires of a thermocouple body such as a variety of wire resistance change will affect temperature measurement. Thermocouple is by thermal components ( The resistor body) , wire, insulation materials, stainless steel casing combination solid body, its diameter is generally from 2 to 8 mm, achieve more xiaoke phi is 0. 25mm。 Compared with conventional type thermocouple, it has the following advantages: (1) small volume, no internal air gap, thermal inertia, the measured value after small; (2) good mechanical properties, resistance to vibration and shock. (3) can bend, easy to install; 4. Long service life. Thermocouple temperature measuring instrument is commonly used in temperature measuring element, is made up of two different components of the conductor when two ends synthesis loop, when the two junction thermocouple temperature is not at the same time, will produce thermal current in the circuit. If the work end of the thermocouple with the reference entity temperature difference, display instrument will indicate the thermocouple thermoelectric potential of the corresponding temperature value. 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, the company produces the thermocouple used to introduce thermocouple temperature measuring element, therefore, is accurate, sensitive, fast thermal response time, stable quality, long service life, etc.