How is the dust explosion protection rating determined? What is the explosion protection rating for powdered activated carbon?
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How is the dust explosion protection rating determined? Is an explosion-proof environment required for the location where powdered activated carbon is added? What is the explosion protection rating?
Class IIIB belongs to the category of non-conductive dust explosion protection
Class IIIB belongs to the category of non-conductive dust explosion protection
Activated carbon is conductive, right? It belongs to category IIIC, I think
It is divided into three categories. Category I: Electrical equipment used in coal mines； Class II: All electrical equipment for explosive gas environments other than coal mines and underground areas. Class II can be further divided into Class IIA, Class IIB, and Class IIC; devices designated as Class IIB can be used under the same conditions as Class IIA devices ； ⅡC can be applied under the same conditions as ⅡA and ⅡB. Class III: Electrical equipment for explosive dust environments other than coal mines. Class IIIA: Flammable fluff ； Class IIIB: Non-conductive dust ； Class IIIC: Conductive dust. Maximum surface temperature: The highest temperature reached by any component of an electrical equipment that could cause ignition in an explosive environment surrounding it, when the equipment is operating under the most unfavorable conditions within its specified range. The maximum surface temperature should be below the flammability temperature. For example: if the ignition temperature of the explosive gas in the environment surrounding the explosion-proof sensor is 100°C, then under the most severe operating conditions, the highest surface temperature of any component of the sensor should be below 100°C.
Ah, it’s indeed possible for it to conduct electricity. Thank you for pointing that out