Explosionproof walkie talkie level

Explosion-proof walkie-talkies need to meet the requirements of explosion-proof environments. In different applications, different explosion-proof certifications are required.

① Ex: China and International Electrotechnical Commission explosion-proof mark

② Intrinsically safe electrical equipment is divided into two levels of ia and ib according to the place of use of the intrinsically safe circuit and the degree of safety.

Ia Grade: Electrical equipment that cannot ignite explosive mixtures during normal operation, one failure and two failures

Ib Grade: electrical equipment that cannot ignite explosive mixtures during normal operation and a failure

③ Refers to the "IIB" grade in gas explosion-proof. Except for coal mines and underground electrical equipment, the representative gases are: propyne, acrylonitrile, dimethyl ether, hydrogen cyanide city gas, etc. Three types of IIC (security level: A <B <C), and class II can be divided into class IIA, IIB, and IIC. Equipment marked with IIB can be used for the use of IIA equipment; IIC can be used for IIA and IIB condition.

④ According to the highest surface temperature of the equipment, it is divided into six groups T1 to T6 (T6 has the highest security level, that is, the lower the surface temperature of the equipment, the better). T4 means that the surface temperature of the equipment cannot exceed 135 ° C.

T1 = 450 ° T2 = 300 ° T3 = 200 ° T4 = 135 ° T5 = 100 ° T6 = 85 °

⑤ Gb: It is the equipment protection level

If you need to know more about explosionproof walkie talkie level, you can call HZH MARINE GROUP +86 13360560504 or email info@hzhmarine.com.