The so-called gas explosion-proof certification and dust explosion-proof certification are classified according to the applicable environments of the equipment.

Equipment for use in various hazardous gas atmospheres undergoes gas explosion-proof certification, while equipment designed for various flammable dust locations undergoes dust explosion-proof certification.

In explosion-proof certification, gases are categorized into Class IIA, IIB and IIC, and dusts are categorized into Class IIIA, IIIB and IIIC. They differ in characteristics and environmental hazards, requiring distinct explosion-proof protection measures for equipment, and the two types of certifications are not interchangeable. Naturally, some products, when applying for explosion-proof certification, comply with the requirements of both gas and dust explosion-proof standards, enabling their use in both gas and dust environments. Whether a product holds gas or dust explosion-proof certification can also be identified from its explosion-proof mark on the explosion-proof certificate.

For more information on explosion-proof knowledge, feel free to contact us at any time!

STS has long been specialized in the explosion-proof field. We possess rich certification experience and a professional technical team in the field of intrinsic safety explosion-proof certification. Our experienced intrinsic safety electronic engineers provide explosion-proof technical services including intrinsic safety design, board copying, circuit evaluation and rectification, helping enterprises avoid pitfalls and expedite the acquisition of explosion-proof certifications.