Electric heating tube open circuit fault measurement and control device

Electric heating tube open circuit fault measurement and control device

The internal system open circuit fault measurement and control device of the electric heater is connected in series between the electric heater and the temperature control instrument contact in the electric heater, and mainly uses the current detection of the electric heater open circuit (burning) and the internal instrument in the electric heater The voltage detection of the switch point on and off. If the instrument contacts are normally on and off, it will not affect the normal installation of the electric heater, but will cause no signal output in the electric heater; only when the explosion-proof electric heater has an open circuit fault in the internal system of the electric heater, the electric heating Only the device in the electric heater has signal output, and then cooperates with other electric heater devices (display, buzzer, host control, etc.) to realize the electric heater control function requirements. Therefore, during use, the safety of the internal system of the electric heater must be carefully checked to see if it is within a normal range of values. This is of great help to improve the quality of the electric heater.

How to repair the quartz heating tube after using the interrupt wire?

(1) Winding link: It can only be used in the occasions where the diameter of the heating wire is less than 0.5mm; when the diameter of the heating wire is greater than 0.5mm, it is not easy to wind tightly, and the contact resistance is large. After the power is turned on, the time is not long, and it will re-blow.

(2) The electric heating wire inside the quartz tube is crimped with stainless steel skin

(3) Riveting

(4) Spiral butt welding or milling groove cooling pressure has better connection effects, but corresponding mechanical equipment is required; when repairing the electric heating wire of iron-chromium-aluminum material, it should be heated to dark fuchsia as much as possible to prevent it from breaking Heating wire.

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