A series of explosion-proof thermal resistors are used as temperature measuring and controlling sensors and display instruments to directly measure and control the temperature of gases, liquids and vapors in the production process. My company production of chemical special explosion-proof explosion-proof type, explosion-proof type thermocouple thermal resistor products performance promulgated by the state of "explosive environment with explosion-proof electrical equipment" standard, design and manufacture of thermoelectric properties in line with the international IEC standards, and by national instruments explosion-proof surveillance testing qualified. Explosion-proof thermocouple, explosion-proof type heat resistance of the structure, principle and assembly methods are basically the same, the main difference is the flame-proof product junction box (shell) in the design USES the aluminum alloy die casting, and have enough internal space, thickness and mechanical strength, thermal stability of the rubber sealing ring are in line with the state explosion proof standard. Therefore, when the explosive mixture gas inside the junction box bursts, its internal pressure will not damage the junction box, and the resulting heat cannot be diffused outward -- passing the explosion. As long as the user strictly observes the rules of use of the product, the explosion-proof thermal resistance product can achieve reliable explosion-proof effect. Characteristics: pressure spring type temperature sensor, good anti-vibration performance; High measurement accuracy; No need to compensate the conductor, saving the cost; Imported thin film resistance components, reliable and stable performance.

Working principle: explosion-proof explosion-proof principle is to use the clearance, thermal resistor design has enough strength of the junction box, and other components, all can produce sparks, arc and dangerous parts are sealed in the junction box cavity temperature, when the lumen burst, can shut down by joint clearance, made after the explosion flame temperature and not reach outside the cavity, thereby flame-proof.

Main technical parameters:

IEC751 JB/ t18622-1997 JB/ t8623-1997 JB/ t5518-91

Room temperature explosion-proof heat resistance insulation resistance at ambient temperature for 15-35 ° C, relative humidity is not more than 80%, test voltage for 10-100 - v (dc) electrode and outer casing of the insulation resistance between > 100 m Ω.

Measurement range and allowance