Shenzhen Zhongnuo Testing Technology Co., Ltd. is based in South China and specializes in explosion-proof certification and coal safety certification application consulting services, offering one-stop explosion-proof technology consulting services.
Is "intrinsically safe certification" the same as explosion-proof certification? What are the differences between them?
Explosion-proof certification refers to a safety certification for equipment and products used in explosive hazard areas.
To meet the explosion-proof certification standards, certain measures must be taken to achieve what we refer to as explosion-proof protection types.
Common explosion-proof protection types include intrinsic safety, flameproof, positive pressure, increased safety, and so on.
Clearly, intrinsic safety is just one type of explosion-proof protection.
Different explosion-proof protection types have varying design requirements for products.
intrinsic safety is a type of explosion-proof protection that limits electrical energy, ensuring that even in the event of a fault, the energy produced is not sufficient to ignite the surrounding explosive environment.
Therefore, intrinsic safety requirements limit the current, voltage, capacitance, inductance, etc. of electrical equipment, and are generally applicable to low-power devices.
Additionally, there are specific requirements for the power supply method, housing material, and wireless transmission of intrinsically safe equipment.
As a third-party consulting agency specializing in explosion-proof certification for many years, ZN Testing has dedicated engineers for intrinsic safety circuit and structural design. We offer technical consulting services for explosion-proof circuit design, drafting, and rectification, and have extensive experience in designing and obtaining certifications for intrinsic safety levels ia, ib, and ic.
If you require certifications in this area, feel free to send us a private message!

What does the explosion-proof marking Exdb eb llB T6 Gb mean?
A complete explosion-proof marking includes:
Ex Mark
explosion-proof type
Gas/Dust Combination
Temperature Category
Equipment Protection Level
For example: Ex db ib IIc T4 Gb
Ex tb ⅢC T130°C Db
Ex db eb llB T6 Gb
Ex indicates explosion-proof
DB EB indicates that the equipment is of explosion-proof type with隔爆and increased safety design.
llB indicates that the equipment is suitable for explosive gas environments of llB and llA.
T6 indicates equipment with surface temperatures not exceeding 85°C
Gb is the protection level of the equipment, suitable for Zones 1 and 2.

In China, the explosion-proof certificates required for explosion-proof equipment mainly include the Explosion-Proof Certificate, the Explosion-Proof 3C Certificate, and the Coal Mine Safety Certification.
(1) For products listed in the Explosion-Proof 3C Catalog, such as motors, fans, intercoms, etc., an Explosion-Proof 3C Certification is required. This certification is obtained through a "product testing + factory audit" process, which necessitates the applicant to have a production facility or an OEM/ODM factory.
(2) For explosion-proof products not listed in the explosion-proof 3C certification catalog, and used in non-mining flammable and explosive places, only an explosion-proof certificate of conformity is required.
(3) For use in coal mines with flammable and explosive mixtures such as gas, a coal safety certification must be obtained.
Full machine explosion-proof certification has various categories and applicable locations, such as intrinsic safety type, flameproof type, and encapsulation type, based on explosion-proof types; divided by applicable locations, it includes gas explosion-proof certification, dust explosion-proof certification, and mine explosion-proof certification; in terms of applicable areas, there are also domestic explosion-proof certifications, ATEX certifications, and IECEx certifications, etc.
For more information on explosion-proof equipment qualifications, please feel free to contact Shenzhen ZhongNuo Testing Technology Co., Ltd.

Explosion-proof certification is a product certification designed for use in environments with flammable and explosive gases or dust.
The product implements explosion-proof measures through various protective types, including intrinsic safety, flameproof, positive pressure, increased safety, encased, and dust ignition-proof housing protection.
In terms of explosion-proof protection principles, it is primarily based on limiting spark energy and isolating flammable and explosive substances.
The type of explosion-proof design for the product depends on its electrical parameters, product structure, operating principle, and installation method, etc.
If you happen to need explosion-proof certification for your products, feel free to consult Shenzhen Zhongnuo Testing Technology Co., Ltd. at any time.
Shenzhen Zhongnuo Inspection & Technology Co., Ltd. offers design, testing, and certification guidance for explosion-proof products, along with agency services for obtaining certifications. We specialize in intrinsically safe circuit design and products, providing consulting services such as intrinsically safe design, circuit assessment, structural design, and drawing guidance. Our successful cases include various sensors, instruments, automation equipment, and robotic products.
Feel free to message us anytime for detailed communication!
Explosion-proof Certification Application Consulting Service - Shenzhen Zhongnuo Testing Technology Co., Ltd.