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Wear-resistant thermocouples adopt different high-strength wear-resistant protection tubes and surface modification measures for different temperature ranges and measured media to form a composite pipe-type solidified structure. This series of products is suitable for petrochemical industries with serious wear of protective tubes. Coal handling system, fluidized bed boilers, cement clinker and refractories, and other mobile powder and material temperature measurement. Further increase the service life of thermocouples. Its performance is superior to the current wear-resistant thermocouples and won praises from users. With a number of high-tech products in the international advanced level, its special process of wear-resistant materials without solving the problem of temperature measurement lag, completely solved the circulating fluidized bed boiler temperature thermocouple's service life, protection sleeve has resistance Grinding, high temperature oxidation resistance, resistance to sulfide, resistance to liquid iron, limestone and other cement materials corrosion, erosion resistance, vibration resistance and many other technologies, so that the temperature thermocouple life is generally one to two years.
Symptoms Possible causes Processing method The thermoelectric potential is smaller than the actual value (indicating that the indicated value of the meter is low)
The short-circuit of the hot-electrode to find out the short-circuit cause, such as due to moisture, you need to dry; as a result of insulator damage caused by the need to replace the insulator thermocouple terminal ash, resulting in short-circuit cleaning dust compensation line between the short-circuit to find Short out points, strengthen insulation or replace the compensation wire. Thermocouple Thermal electrode deterioration. In the allowable length of the question, cut off the deteriorating section and re-weld, or replace the new thermocouple compensation wire with the thermocouple polarity and reconnect the correct compensation wire and thermoelectricity. Even if it is not matched Replace the matching compensation wire. The thermocouple is not installed or inserted. Depth does not meet the requirements. Reinstall the thermocouple according to the regulations. Cold junction temperature compensation does not meet the requirements. Adjust the cold junction compensator The thermocouple does not match the display meter. Or show the instrument so that the matching thermoelectric potential is greater than the actual value (display instrument indicator value is high)
The thermocouple and the display instrument are not matched with the pumping thermocouple or the display instrument to make it match. The compensation wire and the thermocouple are not matched. The replacement of the compensation wire makes it compatible with the DC interference signal to eliminate the DC interference Thermoelectric potential Output instability Thermocouple terminals and Poor thermal electrode contact. Tighten the terminal screw to insulate the thermocouple. Measure the insulation damage of the circuit, cause intermittent short circuit or ground, find the fault point, and repair the insulation.
Wear-resistant thermocouple operation and maintenance
Wear-resistant thermocouple using new anti-corrosion materials, coated with PTFE F46, suitable for measuring temperature in various corrosive media of petrochemical industry, is a special temperature measuring instrument for chlor-alkali industry.