Application of explosion-proof cameras in explosive hazardous areas
Explosion proof cameras are mainly used in hazardous areas with flammable and explosive materials. The country has a clear definition of explosion-proof levels for various hazardous areas, which refer to places that pose a fire or explosion hazard due to the presence of flammable and explosive gases, vapors, liquids, combustible dust, or combustible fibers. Typical hazardous locations, such as the environment formed during the production, processing, and storage of explosive substances in the petrochemical industry, and underground coal mines(The working environment formed by the continuous infiltration of methane gas from coal seams)Wait.
Explosion proof camera and ordinary cameraThe difference between cameras
Explosion proof camera and ordinary cameraThe difference between cameras lies in their functions and applicable locations; Secondly, distinguish between the definitions of the two. Explosion proof cameras have no fundamental difference in optoelectronic structure from ordinary industrial cameras. Its most important feature is the use of one or moreexplosion-proofProcess industrial cameras to enable monitoring in flammable and explosive on-site environments.
What explosion-proof types are suitable for explosion-proof cameras?
There are currently three types of explosion-proof cameras on the market: intrinsic safety type, positive pressure type, and explosion-proof type.
Intrinsic safety typeStarting from limiting the energy in the circuit, the camera reduces the potential spark energy to below the specified ignition energy of the gas mixture through reliable control circuit parameters, and limits the surface heating temperature of the wires and components to below the specified ignition temperature of the gas mixture. All circuits inside the camera are regulated under standard conditions(Including normal operation and specified fault conditions)Under this condition, any electric sparks or thermal effects generated cannot ignite the intrinsic safety circuit of the specified explosive gas environment. Intrinsic safety cameras are relatively expensive and rarely seen in the market today.
Positive pressure typeExplosion proof type refers to maintaining continuous air or filling inert gas inside the camera to limit the entry of flammable mixtures into the interior of the camera through the casing.
Explosion proof typeExplosion proof cameras are currently the mainstream in the market. Its working principle is to useExplosion proofThe sparks or arcs generated by the electric current passing through the shell are separated by the outer shell. Even if the outside is filled with flammable and explosive gases, it will not cause an explosion. This type of camera can play a monitoring role in flammable and explosive environments, thereby ensuring human safety.
As a professional explosion-proof testing and certification organization, Shenzhen Zhongnuo Testing Technology Co., Ltd. can provide installation, maintenance, rectification, testing, and certification services for different types of explosion-proof cameras, and can develop personalized explosion-proof certification solutions. Especially after explosion-proof cameras are included in the national mandatory product certification category, Zhongnuo Testing can provide explosion-proof qualification certificates for conversion to explosion-proof3CCertification or new application for explosion-proof3COne stop authentication service to solve customers' practical problems.
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