Intrinsically Safe Ex Certification refers to the certification for intrinsically safe explosion-proof equipment. It ensures that, under normal operation or specified fault conditions, the electric sparks or thermal effects generated by the equipment cannot ignite the surrounding flammable and explosive environments by limiting the circuit energy of electrical devices. Below is a detailed introduction to Intrinsically Safe Ex Certification provided by STS.

I. Definition of Intrinsically Safe Ex Certification

Intrinsic safety is primarily achieved by limiting the energy in the circuit. It reduces the potential spark energy to a level below that required to ignite the specified gas mixture. Meanwhile, the surface temperature of wires and components is also restricted to below the ignition temperature of the specified gas mixture, thereby realizing intrinsic safety.

II. Scope of Application of Intrinsically Safe Ex Certification

Intrinsically Safe Ex Certification is widely applied to low-power, low-energy instruments and meters, handheld terminals, and other similar products. These devices generate relatively low energy, which can be easily controlled within the safe range through technical means to meet the requirements for intrinsic safety. Examples of products eligible for Intrinsically Safe Ex Certification include temperature and vibration sensors, remote control transmitters, methane monitoring devices, Bluetooth beacons, and walkie-talkies.

III. Standards for Intrinsically Safe Ex Certification

The main standards implemented for domestic Intrinsically Safe Ex Certification in China are GB/T 3836.1 and GB/T 3836.4, etc. For international IECEx Certification, the applicable standards are IEC 60079-0 and IEC 60079-11. These standards specify detailed technical requirements, test methods, and inspection items for intrinsically safe electrical equipment to ensure their intrinsic safety performance.

IV. Documents Required for Applying for Intrinsically Safe Ex Certification

A series of documents need to be prepared for Intrinsically Safe Ex Certification application, including product manuals, enterprise standards, electrical schematic diagrams, functional block diagrams, PCB layout drawings, general assembly drawings, battery specifications (if applicable), potting process documents (if applicable), wireless transmission power reports (if applicable), and housing material reports (if applicable).

V. Significance of Intrinsically Safe Ex Certification

Equipment with Intrinsically Safe Ex Certification can minimize explosion risks and protect personnel safety as well as property when used in flammable and explosive hazardous environments. Meanwhile, for enterprises, obtaining Intrinsically Safe Ex Certification is one of the important market access requirements for their products to enter the explosion-proof equipment market, which helps enhance the market competitiveness of the products.

VI. Professional Intrinsically Safe Ex Certification Agency

Shenzhen Zhongnuo Testing Technology Co., Ltd. is a professional agency for Intrinsically Safe Ex Certification. We have rich certification experience and a professional technical team. Familiar with certification processes and standard requirements, we are able to provide enterprises with comprehensive services covering intrinsically safe circuit design and modification, drawing and document revision, certification application, and factory audit.

If you have any questions or needs regarding Intrinsically Safe Ex Certification, please feel free to contact STS at any time.