The characteristics of the bimetallic thermometer you know?

Bimetallic thermometer advantage compared with other products fast response speed, small volume, good linearity and relatively stable, some products abroad also has high temperature performance. What are the user for bimetallic thermometer features all understand? Below to introduce specific instrument, hope can help you better application products. Bimetallic thermometer features: 1, the bimetallic thermometer thermoelectric potential size only to the thermoelectric properties of thermal electrode material and temperature difference on both ends. 2, use the same kind of homogeneous conductor or semiconductor circuits, won't produce thermoelectric potential. 3, temperature t and two contact thermocouple t0, if t = t0, the thermocouple thermoelectric potential is zero. Intermediate temperature law laid the foundation for the development of thermocouple indexing table. 4, 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. 5, if the 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 stable 6, high electrical 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. 7, but the wrong with nickel chrome - Nickel silicon bridge of compensation, its compensation bridge balance 0 & ordm; c。 When the cold end temperature of 30 & ordm; C, thermometer indicating temperature 900 & ordm; C, the actual temperature of the furnace? By using the standard laws of electrode to determine the components with temperature changes. Generally bimetallic thermometer used in low temperature, thermocouple used in high temperature. If the temperature over 500 degrees so bimetallic thermometer resistance will be very big, may affect the measurement result, can appear even cannot come out measurements.