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Classification of Dust Explosion proof Electrical Equipment and Dust Explosion proof Signs

Electrical equipment used in dust explosion hazardous areas should be selected as dust explosion-proof electrical equipment in accordance with the current national standard GB 12476.2-2010 "Elect……

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The difference between explosion-proof certification and coal safety certification

Many people always think that the explosion-proof certificate and coal safety certificate are the same, as long as the product obtains the explosion-proof certificate or coal safety certificate, it ca……

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Guidelines for Handling Explosion proof Certificates

Explosion proof certificate refers to a document used to determine whether equipment meets the requirements of standards, type tests, and routine tests for adaptation. The certificate can be for Ex de……

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The meaning of U and X is indicated after the explosion-proof certificate number

The symbol "U" in the explosion-proof certificate is used to represent the symbol of Ex components; The symbol "X" in the explosion-proof certificate represents a symbol for specia……

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Explosion proof rating and certification significance

Explosion proof certification is actually a necessary test that most electrical products must pass and obtain certification certificates for. This is not only a guarantee of product quality promotion,……

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Testing items and handling institutions for C4 anti-corrosion level certification

Testing items and handling institutions for C4 anti-corrosion level certification

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What is the classification of anti-corrosion grade C5?

In 1998, the International Organization for Standardization (ISO) introduced ISO12944 (Corrosion Protection of Steel Structure Protective Coating Systems), which is an international common standard. I……

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Calibration cycle of combustible gas detection alarm

The calibration cycle for combustible gas detection alarms is usually once a year. According to the national standard JJG 693-2011 "Combustible Gas Detection Alarm", the calibration cycle of……

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Technical requirements for regular testing of gas detection and alarm instruments in the work environment

The main technical requirements include the following: 1. Power on self-test and alarm function: The instrument should have automatic self-test function when turned on, and the alarm component should ……

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GB 12358-2024 "General Technical Requirements for Workplace Gas Detection and Alarm Instruments" updated

The new version is GB 12358-2024, which will be officially implemented on June 1, 2025. The standard is applicable to the production and use of combustible gas, toxic and harmful gas, and oxygen detec……

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