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 a one-stop explosion-proof technology consulting service.
Domestic explosion-proof certification modes are divided into three cases -- Shenzhen ZhongNuo Testing Technology Co., Ltd.
1. Explosion-proof certification system
Applicable Products: Electrical and non-electrical equipment used in places with explosive gases and dust, excluding those for mining purposes (products not listed in the Explosion-proof 3C Catalogue)
Certification Mode: Product Testing
Certification Certificate: Explosion-Proof Compliance Certificate
Certificate Validity: 5 years
Annual Audit Required: No
2. Intrinsically Safe 3C Certification System
Applicable Products: Electrical Equipment listed in the Explosion-Proof 3C Catalog
Certification Model: Combination of Type Testing and Factory Audit
Certification Certificate: CCC Certificate
Certificate Validity: 5 years
Is Annual Audit Required: Annual Audit Required
3. Coal Safety/Mining Safety Certification System.
Applicable Products: Various electrical and non-electrical equipment for use in coal and non-coal mines
Certification Mode: Combination of Type Testing and Factory Audit
Certification Certificate: Mine Product Safety Mark Certificate
Certificate Validity: 5 years
Whether Annual Audit: Audited Annually

What are the requirements for obtaining an explosion-proof certificate for a gas detector?
Gas detectors are a common type of explosion-proof product, with common types including intrinsically safe, flameproof, and both flameproof and intrinsically safe.
The type of explosion-proof design to be adopted depends on the product's structure, installation method, and usage location, etc.
Portable, handheld models are recommended to obtain intrinsic safety explosion-proof certificates; they are relatively lightweight.
Additionally, gas detectors used in Zone 0 can only be intrinsically safe IA explosion-proof classification.
For intrinsically safe models, consider intrinsic circuit design, material of the housing, and battery temperature rise tests, etc.
Fixed installations can be made explosion-proof. Explosion-proof products are generally heavier, primarily achieving explosion prevention through the use of explosion-proof casings.
Even if internal components generate sparks, the explosion can be prevented from spreading due to the explosion-proof housing's function.
On the other hand, the housing also prevents external explosion sparks from entering the interior of the equipment.
Of course, some gas detectors merely have intrinsic safety or explosion-proof features that do not achieve proper explosion-proof performance.
At this point, consider explosion-proof and intrinsically safe composite types.
ZhongNuo Testing has already obtained domestic and international explosion-proof certificates for customers on gas detectors, alarms, transmitters, and other instruments and meters.
We boast extensive experience and case studies; feel free to send us a private message for a discussion!

Certification for Explosion-Proof Electrical Equipment Inspection
Regarding explosion-proof electrical inspection qualifications, this usually involves two main aspects: product certification and on-site facility testing.
Product Certification:
Newly launched products must undergo relevant tests in accordance with the GB/T 3836 series standards.
(2) Upon passing the test, the product will receive a防爆 certification, which is an essential qualification certificate for the product to be used in flammable and explosive environments.
(3) During the product certification process, design drawings, manuals, samples, and other relevant documents must be provided.
2. On-site Facility Inspection:
The on-site explosion-proof electrical equipment inspection is conducted in accordance with the provisions of AO3009-2007 standard.
(2) Electrical equipment in use must undergo a periodic explosion-proof inspection at least every 3 years.
(3) This inspection primarily targets users of explosion-proof equipment, ensuring safety and compliance during operation.
Shenzhen ZhongNuo Testing Technology Co., Ltd. boasts years of industry experience in explosion-proof testing and certification. We offer services including explosion-proof product design, testing, certification, as well as on-site testing and renovation. Moreover, we provide customized explosion-proof technology and standard consulting services to meet diverse customer needs.
If you have any needs or questions regarding explosion-proof electrical testing qualifications, feel free to contact us at any time.

The process of obtaining explosion-proof certification for a product involves assessing the specific conditions of its use site, such as whether it's a gas or dust environment, identifying the explosive materials involved, and determining the explosion-proof zone where the equipment is installed. This helps in reference for our explosion-proof design of the product.
Explosion-proof Certification Application Consultation Service - Shenzhen ZhongNuo Testing Technology Co., Ltd.