The explosive gas atmosphere is a kind of particular working environment.Based on the principle of the infrared optical gas detection
and according to national standard of China
the intrinsic safety of the infrared methane alarm device was developed.The development was composed of the circuit design
the selection of the explosion-proof battery and the design of the flameproof crust.The device met the requirements for the underground use.The infrared detection principle of infrared methane alarm device and the chamber structure of the alarm instrument were also described.The overall design of the infrared methane alarm device features high security
portability
low power consumption and low voltage input.
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references
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