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.
Why do products need to have explosion-proof certification?
Safety in production is a must. The product is to be used in environments with explosive hazards, which inherently pose a significant risk.
If the equipment itself is not explosion-proof, it can easily spark or overheat, igniting surrounding explosive materials, which would be a major issue.
The product must obtain explosion-proof certification to ensure that the equipment can be safely used in environments with explosive hazards.
Due to the inherent issues with the equipment itself, it ignited the surrounding environment. Of course, if the equipment failed to explode-proof (non-explosion-proof), that's a different matter.
As the user, if you have such potential explosive hazards on-site, would you opt for explosion-proof equipment or regular equipment?
When supplying your products to these on-site venues, wouldn't it be more appealing if your products have obtained explosion-proof certification?
If your equipment is in need of explosion-proof certification and wants to enter the explosion-proof market, please message us immediately!
ZhongNuo Inspection has been deeply involved in the explosion-proof field for many years, well-versed in the requirements of GB/T3836 and EN/IEC60079 explosion-proof standards.
Offer explosion-proof product modification and design guidance, as well as a one-stop explosion-proof technology solution with certification.

What is an Intrinsically Safe Explosion-Proof Certificate? What are the requirements for applying for an Intrinsically Safe Explosion-Proof Certificate?
The explosion-proof equipment primarily ensures safety by controlling the electrical parameters of the device circuit and limiting the entire circuit's energy to meet the explosion-proof requirements.
Key measures include reducing voltage and current, and controlling parameters of energy storage components such as inductors and capacitors.
The product design reference standards are GB/T3836.1 and GB/T3836.4.
Customers applying for the explosion-proof certification need to provide electrical schematics, block diagrams, PCB layouts, numbering diagrams, product assembly drawings, and manuals.
Company standards and related materials.
Recently handled products include temperature vibration sensors, remote transmitters, monitoring devices, Bluetooth beacons, walkie-talkies, etc.
All explosion-proof certificates are of intrinsic safety type.
If you also have products that require explosion-proof certification, feel free to send us a private message!

Certification standards for explosion-proof equipment used in environments with explosive gas:
GB/T 3836.1-2021 Explosive Atmospheres Part 1: Equipment General Requirements
GB/T 3836.2-2021 Explosive Atmospheres, Part 2: Equipment protected by explosion-proof enclosures "d"
GB/T 3836.3-2021 Explosive Atmospheres Part 3: Equipment protected by an "e" type of increased safety
GB/T 3836.4-2021 Explosive Atmospheres Part 4: Equipment protected by intrinsic safety "i"
GB/T 3836.5-2021 Explosive Atmospheres, Part 5: Equipment protected by positive pressure enclosures "p"
GB/T 3836.6-2017 Explosion-proof Environment, Part 6: Equipment protected by liquid immersion type “o”
GB/T 3836.7-2017 Explosive Atmospheres, Part 7: Equipment protected by filling with sand of type “q”
GB/T 3836.8-2021 Explosive Atmospheres Part 8: Equipment protected by "n" type protection
GB/T 3836.9-2021 Explosive Atmospheres Part 9: Equipment protected by "m" type encapsulation

Ex-proof electrical testing qualification
Regarding explosion-proof electrical testing qualifications, this generally 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 an explosion-proof certification, which is an essential qualification certificate for the product to be used in flammable and explosive environments.
(3) During the product certification process, the following documents are required: product design drawings, manuals, samples, and other relevant materials.
2. On-site Venue Inspections:
现场 explosion-proof electrical equipment inspections are 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 is primarily aimed at 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 inspections and construction modifications. Additionally, we provide customized explosion-proof technology and standard consulting services to meet the diverse needs of our clients.
If you have any needs or questions regarding explosion-proof electrical testing qualifications, feel free to contact us anytime.
Explosion-proof Certification Application Consultation Service - Shenzhen ZhongNuo Testing Technology Co., Ltd.