Which four gases are detected by the portable gas detector?
Portable gas detector to detect which four gases, in general, the standard four-in-one gas alarm can detect the gas for: combustible gases, oxygen, carbon monoxide, hydrogen sulfide these four gases are common leakage of gas types in the course of our production operations, so there is a composite device instrument to meet the needs of a number of enterprises.
The role of portable gas detector
1. The role of portable gas detector, gas detector belongs to the instrumentation industry for gas detection instruments, mainly for safety and security, the core function is to prevent flammable and explosive, toxic and hazardous accidents caused by the production, life in the production of a very important role in safety and security, but also to reduce the occurrence of accidents related to intelligent linkage system equipment.
2. Portable gas detector is a device used to detect the gas concentration in the environment in our daily life and work plays an important role, it is widely used in various industries and places, such as chemical plants, mines, hospitals, laboratories and so on.
How many years is the validity period of the explosion-proof certificate of gas detector?
Ex Certificate of Conformity: A document used to determine that the equipment meets the requirements of the standard, type tests and adapted routine tests. The certificate can be for Ex equipment or Ex components.
The current domestic explosion-proof certificate of compliance is valid for 5 years from the date of issue.
If the certificate expires, you can choose to renew or exchange the certificate.
When the validity of the enterprise's explosion-proof certificate is about to expire, the enterprise should provide a letter of application for renewal within three months before and after the expiration date, and should bring the following information to apply for renewal again. If there are any unforeseen circumstances, they should notify our center in time. The application letter includes the name of the product for which the renewal is requested, the model number, the original explosion-proof grade, the original explosion-proof certificate number and an explanation of whether the product has been changed or not. Enterprises should also send the expired explosion-proof certificate of conformity and the technical data sent to the center for re-examination, and provide samples for re-examination.
Foreign explosion-proof certificates of conformity, such as ATEX and IECEx certificates, there is no limit to the validity period. Because their way of obtaining the certificate is to use the type test method, that is, product certification + factory production quality system review combined way to ensure the validity of the certificate.
