Shenzhen Zhongnuo Testing Technology Co., Ltd. is based in South China, specializing in explosion-proof certification and coal safety certification application consulting services, offering one-stop explosion-proof technology consulting services.
What is the difference between obtaining the safety certification for products and the coal safety certification?
intrinsic safety certification, also known as intrinsic safety explosion-proof certification.
In the explosion-proof industry, there are various types of explosion-proof protection, including separation type, intrinsically safe, increased safety, positive pressure, and sealed type, etc.
intrinsic safety is just one type of explosion-proof design; equipment utilizing this type of explosion-proof design is used in explosive areas.
Due to limitations on its working voltage, current, capacitance, inductance, etc.
Even if sparks occur within the circuit, they are not sufficient to ignite the surrounding explosive environment, ensuring intrinsic safety.
Intrinsically safe certification is widely applied to low-power consumption and low-energy instruments, handheld terminal products, and other devices.
Coal Mine Safety Certification is a mandatory safety certification for equipment used underground in coal mines.
Due to the presence of explosive substances like methane in coal mine shafts, electrical equipment used in coal mine shafts must be equipped with protective measures to achieve explosion-proof performance.
Choose the appropriate explosion-proof protection type, such as intrinsic safety, flameproof, and encapsulation, based on product structure, electrical parameters, installation method, and usage area.
It's worth noting that electrical equipment applying for the Coal Mine Safety Certification must not only have explosion-proof capabilities but also meet performance tests for the special underground environment of coal mines.
ZhongNuo Inspection has long focused on explosion-proof certification and coal safety certification.
Proficient in certification standards, familiar with product explosion-proof design, modification, testing, certification, and factory audit processes and requirements.
Helps businesses quickly obtain explosion-proof certification and coal mine safety certification.

What is the difference between ATEX certification and CE certification?
CE certification is a mandatory certification in the EU market, and all equipment and products entering the EU market must pass the relevant CE directive certification.
For example, there are EMC directives, LVD directives, MD directives, ATEX directives, etc.
Different products are subject to different certification directives, with the ATEX directive specifically targeting explosion-proof equipment and products.
ATEX certification can be likened to the CE certification for explosion-proof products.
Each directive has different applicable standards; for the ATEX directive, the applicable standard is the EN60079 series.
Different explosion-proof types are applicable to different standard series.
For instance, EN 60079.1 is the standard for flameproof, EN 60079.7 for increased safety, and EN 60079.11 for intrinsic safety, etc.
Learn more about ATEX certification, feel free to DM Shenzhen ZhongNuo Testing Technology Co., Ltd. anytime!

What is positive pressure explosion-proof? What technical requirements are there for obtaining a positive pressure explosion-proof certification for a product?
Positive pressure explosion-proof refers to the introduction of clean air or inert gas into the interior of the equipment.
Ensure internal equipment pressure exceeds the external explosive environment pressure, thereby isolating explosive mixtures from entering the equipment to achieve explosion-proof performance.
The positive pressure explosion-proof certification complies with the standards GB/T 3836.1 and GB/T 3836.5.
Primarily, it involves evaluating the equipment's ventilation time, pressure monitoring system, pressure range, blow-off, and alarm features to meet explosion-proof performance requirements.
Positive pressure type includes three explosion-proof grades: pxb, pyb, and pzc.
Select the appropriate explosion-proof certification level based on product structure and explosion-proof zones.
ZhongNuo Testing has been involved in the explosion-proof industry for many years and is familiar with the requirements of the GB/T 3836 series standards.
Extensive experience in obtaining certifications for explosion-proof pressure systems.
Offer a one-stop service for explosion-proof technical guidance and consulting, including initial positive pressure explosion-proof design and rectification, drawing evaluation, installation guidance, and certification acquisition.
Our successful cases include positive pressure ultrasonic shock plates, positive pressure omni-directional antennas, and positive pressure film thickness gauges, etc.
If you have a need for this, feel free to message us anytime!

What are the requirements for obtaining an explosion-proof certification for robot products?
More and more robotic products are now being applied in explosion-proof environments.
Many clients have asked, "How do we get explosion-proof certification for our robot products? What technical requirements are there? What standards do we follow? Do we need to send samples for testing since the product is so large?"
Robot products are often combinational equipment, which is also quite large, and requires explosion-proof capabilities.
This encompasses technical issues such as explosion-proof design for the entire unit, selection of electrical components, installation methods, battery selection and installation design, preparation of drawings, electrical connections, grounding, and more.
ZhongNuo Inspection has been in the explosion-proof industry for many years, well-versed in the requirements of the GB/T 3836 series standards.
Extensive experience in the field of robotics product litigation.
We offer a one-stop explosion-proof certification service, including preliminary explosion-proof design rectification, drawing assessment, component selection, installation guidance, and certification acquisition.
Products that are not convenient for shipping can be offered on-site assessment and testing services.
Successful certified cases include patrol robots, rail-mounted robots, and positive pressure robotic arms.
If you have a need for this, feel free to message us anytime!
Explosion-Proof Certification Application Consultancy Services - Shenzhen ZN Testing Technology Co., Ltd.