Although the cement factory dedicated thermocouple is widely used in the industry, but due to his temperature range makes his application has been limited, the specific temperature of the thermal resistance of the cement plant thermoelectric principle is based on the resistance value of the conductor or semiconductor Changes in temperature characteristics. Its advantages are also many, it can also remote transmission of electrical signals, high sensitivity, stability, compatibility, and accuracy are better, but the need for power supply excitation, can not be instantaneous measurement of temperature changes.
Industrial thermal resistance generally uses cement plant-specific thermoelectric, Pt10, Cu50, Cu100, platinum thermal resistance temperature measurement range is generally below zero 200-800 °C, copper thermal resistance is minus 40 to 140 °C. Thermal resistance is the same type of discrimination as thermocouples, but he does not need compensating wires and is cheaper than explosion-proof thermocouples.
1. The special thermoelectric resistance temperature measurement principle of cement plants is measured according to the nature of the resistance of the conductor (or semi-conductor) as a function of temperature. Explosion-proof cement factory special thermoelectric resistance measurement range is negative 00~500 degrees, commonly used platinum resistance (Cement plant dedicated thermoelectric, Pt10), copper resistance Cu50 (negative 50-150 degrees).
2, the nature of the special thermoelectric resistance signal of the cement plant, the resistance itself is a change of resistance, temperature, so that the resistance has a positive or negative resistance change; and the thermal coupling is the change of the induced voltage, he with the temperature Change and change.
3, cement factory dedicated thermoelectric resistance of the two sensors detect the temperature range is not the same, the thermal resistance generally detects 0-150 degrees temperature range, the maximum measurement range up to about 600 degrees (of course, negative temperature can be detected).
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