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.
What is an explosion-proof electrical installation qualification? How to obtain an explosion-proof installation qualification?
Certification for technical training in explosion-proof electrical equipment installation, maintenance, and repair is one of the qualifications for companies engaged in the explosion-proof electrical installation and construction industry.
Many customers involved in installation work in explosive areas seek to obtain such a certificate.
ZheNuo Inspection provides a simple overview of the application process and requirements.
Currently, explosion-proof installation qualification certificates are issued by different authorities, with varying names, certificate samples, and application requirements.
But mostly through training + examination methods, including company certificates and employee certificates, with the training standards being the GB/T 3836 series.
As the applicant company through our agency, ZhongNuo Inspection has cumulatively obtained the relevant certificates for hundreds of client enterprises.
We offer 1-2 training sessions and exams each month, providing full assistance with preparing the necessary documents.
Saves time and costs for a wide range of corporate clients, with certificates that are authentic and traceable.
We can also offer notarization services to our clients.
Feel free to message us anytime if you need this!

Can fiber optic temperature sensing products undergo explosion-proof certification? What are the requirements?
Fiber optic temperature sensing products mainly monitor temperature through sensing fibers, offering advantages such as high accuracy, immunity to electromagnetic interference, and real-time online capabilities.
If this fiber optic is emitted into an explosive hazardous area, the possibility of the light causing an explosion must be considered.
We'll also need to consider obtaining explosion-proof certification. The execution standards for explosion-proof certification of fiber optic temperature measurement products are GB/T 3836.1 and GB/T 3836.22.
Primarily consider the product's circuit and the laser generator's emission power.
Shenzhen Zhongnuo Inspection has successfully obtained multiple explosion-proof certificates and coal safety certifications for its optical fiber temperature measurement host.
We have accumulated extensive experience in certification and can provide consulting services including explosion-proof product design modification, drawing guidance, and certification.
If you have certification needs in this area, remember to send us a private message!

Division of explosion-proof areas in explosive gas environments
In explosion-proof certification, hazardous areas are divided into explosive gas environments and combustible dust environments based on the different states of substances present in the location. According to the duration of presence of hazardous substances in the location, the hazardous areas under the two different states are further divided into three zones.
That is: for explosive gas environments, Zones 0, 1, and 2.
Areas with continuous or long-term presence of explosive gas environments, typically exceeding 1000 hours per year.
Zone 1 - Areas where explosive gas environments may occur during normal operation, generally 10-1000 hours/year.
Zone 2 - Under normal operation, an explosive gas environment is unlikely to occur or to be present for only a short duration, generally less than 10 hours per year.

Which products can apply for the intrinsically safe explosion-proof certificate? What are the requirements?
"An intrinsically safe design is one type of explosion-proof protection, which limits electrical energy so that the equipment remains safe even in the event of a fault."
A type of explosion-proof protection where 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, making them suitable only for low-power devices.
Additionally, there are specific requirements for the power supply method of intrinsically safe equipment, plastic enclosures, and wireless transmitters.
The product application for intrinsic safety certification requires the provision of the product's schematics, PCB diagrams, etc.
ZhongNuo Inspection has dedicated engineers specializing in intrinsically safe circuit and structural design.
We offer technical consulting services for explosion-proof circuit design, drafting, and modifications. We have extensive experience in designing and obtaining certifications for intrinsically safe ia, ib, and ic explosion-proof classifications.
If you need certification in this area, feel free to DM us!
Explosion Proof Certification Application Consultation Services - Shenzhen ZhongNuo Inspection Technology Co., Ltd.