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Temperature thermal resistance temperature sensor structure

armoured temperature thermal resistance temperature sensor armoured temperature of thermal resistance is made up of heat temperature sensor ( The resistor body) , wire, insulation materials, stainless steel casing combination solid body, its diameter is generally from 2 to 8 mm, can reach the phi mm.

compared with normal temperature thermal resistance temperature sensor, it has the following advantages: (1) small volume, no internal air gap and thermal inertia, small measuring hysteresis; (2) good mechanical properties, resistance to vibration and shock. (3) can bend, easy to install (4) long service life.

today and share is temperature thermal resistance temperature sensor structure, hope to help you!

end face temperature thermal resistance temperature sensor end face temperature of thermal resistance heat temperature sensor resistance wire winding by special processing, close to the face in the thermometer, it is compared with general axial temperature thermal resistance temperature sensor, can more accurately and quickly to reflect the actual temperature of end face, is suitable for measuring temperature bearing and other parts of the face.

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the category of the temperature sensor and the temperature?

temperature sensor material and electronic component features divided into two categories, thermal resistance and thermocouple.

（ 1) Thermocouple

mV output, can be transformed into 4 ~ 20 ma output. S, B, E, K, R, J, T seven standardization thermocouple type thermocouple for China unified design.

（ 2) Thermal resistance

output resistance value, commonly used Pt10, Pt100, Pt1000, Cu50 and Cu100.

0 ℃ resistance to 10 Ω Pt10 said.

working principle of the temperature sensor temperature

when there are two different conductors and semiconductors A and B TO form A loop, its both ends are connected, as long as the temperature of the two nodes is different, one end of the temperature T, end or hot end, called work, and temperature for the TO the other side is called the free end, Also known as the reference side) Or the cold end, then in the loop with electricity, as shown in figure 2 1 ( a) , as shown in the loop of electromotive force is called thermoelectric emfs. This due to the different temperature and produces electromotive force is called the seebeck effect. Related to the seebeck effect, there are two: first, when a current flows through the joint of two different conductors, absorb or release heat here ( Depending on the direction of the current) , known as the peltier effect; Second, the temperature gradient of the electric current flows through the presence of a conductor, absorb or release heat conductors ( Depending on the direction of the current relative to the temperature gradient) , known as the Thomson effect. The two different conductor or the combination of the semiconductor is called the thermocouple. The thermocouple thermoelectric potential EAB ( T, T0) Was synthesized from potential contact potential and temperature difference. Contact potential refers to two different conductors or semiconductor in the contact potential, this potential with two conductors or the nature of the semiconductor and related to the temperature at the contact point. Thermoelectric potential refers to the same conductor or semiconductor in different temperature at both ends of the electric potential, this potential is only with the temperature at the ends of the conductor or the nature of the semiconductor and related, and the length of the conductor, cross section size, the temperature distribution along the length direction of the business. Whether the contact potential or thermoelectric potential contacts are due to focus on the endpoint of potential, as a result of the different number of electrons in thermoelectric potential is the synthesis of the two thermocouple measurements. When circuit disconnection, at disconnect a, b, there is an electric potential difference between delta V, the polarity and size and the circuits of thermoelectric potential, as shown in figure 2 1 ( b) Shown below. And regulations in the cold end, when A current flows from A to B, called A positive, B is negative. Experimental results show that when the delta V is very small, and delta V delta T is proportional to the relationship. Definition of delta T delta V differential rate of thermoelectric potential for thermoelectric potential, is also called the seebeck coefficient. Seebeck coefficient of symbols and depends on two conductors of thermocouple thermoelectric properties and the difference in temperature between nodes.