How to use single-head electric heating tube

How to use single-head electric heating tube

1. The heating part of the single-head electric heating tube should be completely immersed in the heating medium to prevent the heating tube from being damaged by undesirable heat dissipation and exceeding the allowable heating temperature. In addition, the lead-out part of the wiring should be exposed to the heat insulation layer of the heater or outside the heater, so that this part should not be overheated and damaged.

2. Input power, the voltage should not exceed 10% of the rated voltage marked on the various electric heating tubes. If it is suitable for lower than the rated voltage, the heat generated by the single-head electric heating tube will also decrease.

3. For the terminal of the electric heating tube, use 2 nuts to tighten the connection. Don't use too much force to avoid the loosening of the lead screw and damage the electric heating tube.

4. The terminal of the single-head electric heating tube should be kept clean and dry, otherwise it will reduce the insulation performance and be short-circuited. If it is used in a chemically corrosive, flammable, explosive and other liquid or gas environment, the electric heating tube should be connected Strictly protect with insulating and sealing devices to prevent accidents.

5. When heating certain viscose and other substances, such as sodium nitrate, stearic acid, paraffin, etc., the power supply voltage should be lowered at the beginning of heating to reduce the calorific value of the electric heating tube. When it is completely melted into liquid, it will be increased to the rated value. Voltage for heating.

6. Special attention should be paid to heating medium when selecting single-head electric heating tube. It should have no corrosive effect on electric heating tube shell materials.

7. The single-head electric heating tube has been used for a long time. If thick tube dirt and grease accumulate on the surface, it should be removed regularly. Otherwise, the heat transfer performance of the electric heating tube will be reduced and the heat load of the tube surface will exceed the rated allowable damage.

8. The single-head electric heating tube should be stored in a dry warehouse. If the surface is damp due to long-term storage, use a megohmmeter to measure the insulation resistance. If it is less than 1 megohm/500 volts, the electric heating tube should be placed in a drying oven at 200 degrees for drying.

9. The special electric heating tube should read the relevant instructions in detail before installation and use, so as not to damage it.

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