Solve the interference problem of electric tubular heating element
With the development of industrial automation, when we encounter such problems as tubular heating element interference, how can we properly solve instead of waiting. The development of industrial equipment and the advancement of technology have made electric tube sensors more and more widely used in today's society. The electric tubular heating element induction device is a sensor that measures temperature according to the thermoelectric effect, and is one of the commonly used temperature measuring elements. However, we will encounter some interference when using tubular heating element induction equipment for measurement. The following will take everyone to understand the problems of the tubular heating element when it encounters interference, and what effective measures can be taken.
1.Isolation method
The isolation method is to suspend the electric tubular heating element so that the tubular heating element does not contact the refractory bricks on the furnace wall, and an insulation is also used to isolate the electric tubular heating element from the support. This method can well prevent high-temperature leakage interference.
2.Shield method
The shielding method is to put the compensation wire of the tubular heating element in an iron pipe or other metal shield for shielding. This prevents electromagnetic interference and interference from high-voltage electric fields. When using this method, the iron pipe and shield should be well grounded, and the compensation wires should be twisted.
3. Grounding method
This method is to ground the measurement circuit and introduce interference to the ground to ensure the accuracy of the measurement. This method has two types of ground: the first is the reference end of the electric tubular heating element is grounded, and the second is the measuring end of the electric tubular heating element is grounded. When the reference terminal grounding method is used for the electric heating tube, one end of the output end of the tubular heating element (or compensation wire) is grounded through a sufficiently large capacitor (the larger the capacitance, the better, when conditions permit). The grounding method of the measuring terminal is to ground the measuring terminal of the electric tubular heating element, that is, a wire is led out from the measuring terminal of the electric tubular heating element to ground. This method has a good prevention effect on high-temperature leakage interference. When selecting the heating wire, you should choose a heating wire that is high temperature resistant and harmless to the electrode of the heating tube.
When using tubular heating elements, we should be prepared to prevent interference. Only in this way can the electric tubular heating element induction device measure our electric tubular heating elements more accurately, so that our work is more convenient and effective.