Standards And Requirements For Special Thermocouples For Cement Plants
Although the special thermocouple of cement plant is also widely used in industry, its application is limited due to its temperature measurement range. The temperature measurement principle of the special thermoelectric resistance of cement plant is based on the resistance value of conductor or semiconductor. The characteristic that changes with temperature changes. It also has many advantages. It can also transmit electrical signals remotely. It has high sensitivity, strong stability, interchangeability and accuracy. However, it needs power supply and cannot instantaneously measure temperature changes.
Industrial thermal resistance generally uses special thermocouples for cement plants, Pt10, Cu50, Cu100, platinum thermal resistance generally has a temperature measurement range of minus 200-800 ℃, and copper thermal resistance is minus 40 to 140 ℃. The thermal resistance is the same as the thermocouple, but it does not require a compensation wire, and it is cheaper than the explosion-proof thermocouple.
1. The temperature measurement principle of special thermoelectric resistance for cement plants is based on the property of conductor (or semiconductor) resistance changing with temperature. The measuring range of special thermoelectric resistance for explosion-proof cement plants is minus 00~500 degrees, and platinum resistance is commonly used. (Special thermoelectric power for cement plant, Pt10), copper resistance Cu50 (minus 50-150 degrees).
2. The nature of the signal of the special thermoelectric thermal resistance of the cement plant. The thermal resistance itself is a resistance. The change of temperature causes the resistance to produce a positive or negative resistance change; while the thermocouple produces a change in the induced voltage, which varies with temperature. Change and change.
3. The temperature ranges detected by the two types of thermoelectric resistance sensors for cement plants are different. The thermal resistance generally detects a temperature range of 0-150 degrees, and the highest measurement range can reach about 600 degrees (of course, negative temperature can be detected).
