The difference between explosion-proof walkie-talkie and non-explosion-proof walkie-talkie
Explosion-proof walkie-talkies refer to walkie-talkies that can work in explosive gas environments. Unlike civilian walkie-talkies, explosion-proof walkie-talkies do not refer to walkie-talkies that can withstand explosions by themselves, but are walkie-talkies that can work in explosive gas environments.
It is suitable for industries with harsh environment and dangerous combustible gas or dust, such as petrochemical, coal, chemical, thermal power, food processing and other industries. The walkie-talkie relies on electromagnetic waves to transmit signals, and the transmission of electromagnetic waves relies on the continuous conversion of electric and magnetic fields. In this conversion process, it is easy to generate electric sparks. However, the explosion-proof walkie-talkie is shielded where sparks may be generated during the conversion process due to the special treatment of its wiring.
Explosion-proof walkie-talkies are popular in special operations. This phenomenon promotes the continuous development of explosion-proof walkie-talkies and adapts to different harsh environments. The explosion-proof walkie-talkies are divided into grades, sections and groups from the level of explosion-proof walkie-talkies.
The general level is represented by Roman numerals, representing explosiveness. Level I represents a mixture of volatile gases such as gasoline (and other petroleum oil and gas products) and air; Level II represents a mixture of dust and air; Level III represents suspended particles in the air. mixture. Levels from one to three represent different degrees of explosion, which decrease in sequence.
The classification of sections is section 1 and section 2: section 1 refers to the place where there is an explosive gas environment during normal operation, and section 2 refers to the place where there is explosive gas during abnormal operation or equipment failure. The grade distribution of the group is A——G7 group A group is acetylene gas, B group is hydrogen, C group is ethylene, ether, etc., D group is propane, acetone, ammonia, benzene, butyl, gasoline, cyclopropane Gas, natural gas, etc. are all waste gas after petroleum distillation, E-G represents dust, E group is mostly metal dust, F group is carbon dust, and G group is grain dust. And its explosion-proof degree is also declining.
The appearance of explosion-proof walkie-talkies is no different from that of ordinary walkie-talkies, but the materials and physical characteristics used are very different from those of ordinary models.
1: Class (explosive)
Class I: Volatile gasoline (and other petroleum oil and gas products)/air mixture
Class II: Dust/air mixture
Class III: Suspended solids/air mixture
Section 1: Places where there is an explosive gas environment during normal operation;
Section 2: Places where explosive gas exists during abnormal operation or equipment failure.
Group A: Acetylene gas
Group B: Hydrogen
Group C: Ethylene, ether, etc.
Group D: Propane (liquefied petroleum gas), acetone, ammonia, benzene, butyl, gasoline, cyclopropane, natural gas, etc.
Group E: Metal dust
Group F: Charcoal Dust
Group G: Grain dust