The explosion-proof mark is a crucial information for equipment to undergo explosion-proof certification, involving the design requirements and testing items of the equipment. The explosion-proof mark can clearly indicate the scope of application and location requirements of the equipment. It can be said that the explosion-proof mark is the ID card of the explosion-proof product.

A complete explosion-proof sign includes:

Ex identification

Explosion proof type

Gas/dust combination

Temperature group

Equipment protection level

For example: Ex db ib Ⅱ C T4 Gb

Ex tb ⅢC T130°C Db

Ex de llB T6 Gb

Ex stands for Explosion proof

D e indicates that the equipment adopts explosion-proof and increased safety explosion-proof types

LlB indicates that the device is suitable for explosive gas environments of llB and llA

T6 indicates that the highest surface temperature of the device does not exceed 85 ° C,

Gb is the protection level of the device, suitable for Zone 1 and Zone 2

For more information, please contact Shenzhen Zhongnuo Testing Technology Co., Ltd.