Take far eastone bimetallic thermometer is a kind of measurement in the field of low temperature test instrument

Take far eastone bimetallic thermometer is a kind of measuring instrument in the field of low temperature detection, is the use of two different metal expansion degree during temperature change of the principle of work, is widely used in many fields. Today, we mainly introduce the principle of the bimetallic thermometer and characteristics of the hope can help users better application products. Take the principle of remote transmission bimetallic thermometer to take far eastone bimetallic thermometer is a round shape into threaded heat bimetallic strip as thermal devices, and put it in a protective sleeve tube, one end is fixed, known as the fixed end, the other end of the connection on a thin shaft, a free end. Spool at the free end is equipped with a pointer. When the temperature changes, the resulting thermal devices the free end of the rotation, drive the thin axis from the Angle of the pointer changes, corresponding temperature indicator on the dial. With the characteristics of the remote transmission bimetallic thermometer with remote transmission of the bimetallic thermometer thermoelectric potential size only to the thermoelectric properties of thermal electrode material and temperature difference on both ends. Use the same kind of homogeneous conductor or semiconductor circuits, won't produce thermoelectric potential. Two thermocouple junction temperature T, T0, if T = T0, the thermocouple thermoelectric potential is zero. Intermediate temperature law laid the foundation for the development of thermocouple indexing table. For many years, scientists are trying to study can use even with piecewise function to express the function relation between the hot end of thermocouple ( Measurement end) Temperature and the relationship between the thermocouple loop of thermoelectric potential, failed to succeed. If two conductor A and B, respectively, with A third conductor of thermoelectric has A wide temperature range, the long-term use of physical and chemical properties of stability with far eastone bimetallic thermometer high conductivity, the temperature coefficient of resistance is small; Configuration of the thermoelectric potential high sensitivity, a linear between thermoelectric potential and temperature, easy to copy, simple process, cheap. But the wrong with nickel and chromium - Nickel silicon bridge of compensation, its compensation 0 DHS C balance bridge. When the cold end temperature of 30 DHS C, thermometer temperature indicating 900 DHS C, the actual temperature of the furnace? By using the standard laws of electrode to determine the components with temperature changes.