How can ceramic heaters prevent leakage? The quality problems of the ceramic heater itself and improper operation by the user may cause leakage. Let's summarize here: Promise that the electric heating element operates under the following conditions: a. The relative humidity of the air does not exceed 95%, and there is no explosive or corrosive gas. b. The operating voltage should not be greater than 1.1 times the extra value. The enclosure should be effectively grounded. c. Dielectric strength of insulation resistance ≥1mω: 2kv / 1min.
The electric heating tube should be fixed, and the heating area needs to be completely immersed in liquid or metal solids, and it is forbidden to vent. When scale or carbon is found on the surface of the pipe body, it should be cleaned and used from scratch to avoid affecting the heat dissipation and shorten the service life. Ceramic heater 3. When heating the air, the parts should be evenly arranged in a cross shape, so that the parts have excellent heat dissipation conditions, and the air flowing through can be fully heated.
When heating fusible metal or solid salt, alkali, leaching, white wax, etc. The service voltage should drop first, and only increase to the extra voltage after the medium has melted. Safety measures should be considered when heating saltpeter to avoid blasting. Wiring components should be placed outside the insulation to avoid contact with corrosive, explosive media and moisture. The wire should be able to withstand the temperature and thermal load of the wire joint for a long time, and avoid excessive force when tightening the wire joint screw.
These parts should be stored in a dull place. If the insulation resistance is lower than 1ω due to long-term storage, they can be boring in an oven at about 200 ° C, and may be heated by dropping the voltage until the insulation resistance recovers. The magnesium oxide powder at the outlet of the electric heating tube should be maintained at the application site to avoid the entry of pollutants and moisture to avoid the occurrence of leakage.