An overview of the structure: in the cartridge heater temperature measurement devices have security (optional indexing number J, K, or other types). Uses: Widely used in applications requiring high temperature error heating Second, Caution 1, element allowed to work under the following conditions: a. Air relative humidity less than 95%, non-explosive and corrosive gases. . b rated working voltage should not exceed 1.1 times the shell should be effectively grounded c ≥1MΩ dielectric strength of the insulation resistance:.. 2KV / 1min 2, heating pipes should be prepared to locate fixed, effective heating area must be completely immersed in the liquid or metal within a solid, non-air burning. Found the pipe surface scale or knot of carbon, should be cleaned and then, in order to avoid IMPACT heat and shorten life. 3, the heating fusible metal or solid nitrate, alkali, bitumen, paraffin, etc., should be reduce the use of voltage, to be melted medium to rise to the rated voltage. 4, when the heated air evenly element should cross, the element has a good heat Third, the application a mold is heated. 2, the heating system in the plastic machinery. 3, pharmaceutical production lines. 4, laboratory heat treatment tests. 5, the chemical industry and so on.