1. The thermoelectric potential of the bimetal thermometer is only related to the thermoelectric properties of the thermal electrode material and the temperature difference at both ends.
2. The same uniform conductor or semiconductor circuit will not generate thermoelectric potential.
3. Temperature T,T0 of two thermocouple contacts, if T=T0, thermoelectric potential of thermocouple is zero. The intermediate temperature law lays the foundation for the thermocouple indexing meter.
4. For many years, scientists have tried in vain to find out whether the relationship between the temperature of the hot end (measuring end) of a thermocouple and the thermoelectric potential generated by the thermocouple circuit can be expressed by functional relations, even piecewise functions.
5. If the two conductors A and B are respectively composed with the third conductor, thermoelectricity has A wide temperature measurement range, and the physical and chemical properties are stable for long-term use
6. High conductivity, low resistance temperature coefficient; The configured thermoelectric potential is highly sensitive, linear between thermoelectric potential and temperature, easy to copy, simple process, cheap price.
7. However, the matching nickel-chromium-nickel-silicon compensation bridge is wrongly used, and the balance point of the compensation bridge is 0º C. When the temperature of the cold end is 30º C and the thermometer indicates 900º C, what is the actual temperature of the furnace? Temperature dependent components are determined using the standard electrode law.
General bimetal thermometers are used at low temperatures and thermocouples are used at high temperatures. If the temperature is more than 500 degrees, the resistance of the bimetal thermometer will be very large, which may affect the measurement results, or even the situation that the measurement results can not be obtained.
