A, 3C certification
3C certification is known as the "mandatory product certification system", which is the Chinese government to protect consumer safety and national security, strengthen product quality management, in accordance with laws and regulations to implement a product conformity assessment system. It should be noted that the 3C mark is not a quality mark, but only a basic safety certification. That is to say that this is a national mandatory certification, without this certification is not allowed to market.
Two, explosion-proof certification
Explosion-proof certification is used to determine whether the gas detector meets the requirements of explosion-proof standards, type testing and adaptive routine testing, if in line with the corresponding explosion-proof certificate will be issued. Gas detector in the application of the explosion-proof certificate needs to provide corporate credentials, corporate quality assurance, technical information, application for explosion-proof certificate of delivery of samples and a lot of important information, so we need to pay attention to the explosion-proof certificate when choosing a gas detector.
Three, the manufacture of measuring instruments license and explosion-proof electrical equipment installation, repair qualification certificate
The two certificates are not for the gas detector itself is for the gas detector manufacturer's certification, we should ask the manufacturer to ask whether the purchase of these two certificates of authentication, these two certificates of authentication determines whether the brand manufacturers can produce manufacturing or repair and installation The gas detector equipment.
Four, the inspection report
Lastly, the gas detector inspection report, the inspection report is the best national authority of the measuring instruments department issued by the inspection report, which has a variety of parameters of the gas detector, function and detailed data to help us understand the fastest instrument.