How to Use Immersion Heaters Correctly

1. The immersion heater is allowed to work under the following conditions:

 

A. The relative humidity of the air is not more than 95%, and there is no explosive or corrosive gas. (Except explosion-proof heaters)

 

b. The working voltage is not more than 1.1 times the rated value, and the casing should be effectively grounded.

 

C. Insulation resistance≥1MΩ Dielectric strength: 2KV/1min.

 

2. The electric heating tube should be well positioned and fixed. The effective heating area must be completely immersed in liquid or metal solid, and empty burning is strictly prohibited.

 

3. When heating fusible metals or solid nitrates, alkalis, asphalt, paraffin, etc., the working voltage should be reduced first, and the rated voltage can be increased after the medium is melted.

 

4. When heating the air, the elements should be evenly arranged in a cross, so that the heating tube has good heat dissipation conditions, so that the air flowing through is fully heated.

 

5. Safety measures should be considered when nitrate is heated to prevent explosion accidents.

 

6. The wiring part should be placed outside the insulating layer to avoid contact with corrosive, explosive media and moisture; the lead wire should be able to withstand the temperature and thermal load of the wiring part for a long time, and excessive force should be avoided when tightening the wiring screw.

 

7. The heating tube should be stored in a dry place. If the insulation resistance is lower than 1MΩ due to long-term storage, it can be dried in an oven at about 200 ℃.