Explosion-proof electromagnetic flowmeter how to judge?

Time: 2024-07-24
Equipment Configuration:explosion-proof electromagnetic flowmeter

Judgment of explosion-proof electromagnetic flowmeter explosion-proof performance need to consider a number of aspects: explosion-proof certification mark, explosion-proof grade description, manufacturing standards, structural design, third-party test reports, as well as installation and maintenance. Ensure that the product complies with the relevant explosion-proof standards, to ensure the safe use in hazardous environments.

Project Overview

In special occasions, explosion-proof electromagnetic flowmeters need to be used for flow measurement. The first step is to judge its accuracy and reliability. This article will introduce how to judge the performance of explosion-proof electromagnetic flowmeter from the following aspects.

To determine whether an explosion-proof electromagnetic flowmeter truly has explosion-proof performance, it is mainly based on the following aspects:

  1. Explosion-proof certification marks and certificates: Regular explosion-proof electromagnetic flowmeters should have corresponding explosion-proof certification marks, such as China’s explosion-proof certificate (usually marked as Ex), as well as internationally recognized certifications, such as ATEX, IECEx, etc. . These marks and certification information will be clearly marked on the product itself, instructions, or certificates provided by the manufacturer. You can check these marks and verify their authenticity, and sometimes you need to check the validity of the certificate through the certification body's website.

  2. Explanation of explosion-proof level: The explosion-proof mark will contain explosion-proof level information, such as Exd(ib)ibqⅡBT5, which indicates the equipment’s explosion-proof type, protection level, usage environment, etc. Among them, “Ex”. Indicates explosion-proof, "d" refers to explosion-proof type, "ib" refers to intrinsically safe related equipment, "ibq" refers to a special type of intrinsically safe equipment, "II" refers to factory use, "B" refers to the category of explosive gas, " T5" means that the surface temperature of the equipment will not ignite explosive gases below the T5 group (minimum ignition temperature). Make sure these levels meet the requirements of your use environment.

  3. Manufacturing standards: Check whether the product complies with relevant national or international explosion-proof safety standards, such as Chinese National Standard GB 3836 Series, NationalInternational Electrotechnical Commission standards IEC 60079 series, etc.

  4. Structural design: Explosion-proof electromagnetic flowmeters will take special explosion-proof measures in design, such as explosion-proof casing, intrinsically safe circuit design, pressure relief device, etc., to prevent internal Arc, spark or high temperature ignites external explosive gas environment.

  5. Third-party testing report: Manufacturers are required to provide explosion-proof performance testing reports issued by third-party testing agencies. These reports can prove that the products have been professionally tested and meet the required explosion-proof requirements. standard.

  6. Installation and maintenance: Correct installation and maintenance are also key to ensuring explosion-proof performance. It should be carried out in accordance with the manufacturer's instructions and relevant explosion-proof installation specifications to avoid damage to the explosion-proof performance due to improper operation.

In summary, judging the explosion-proof performance of an explosion-proof electromagnetic flowmeter is a comprehensive process, involving certification, standards, design, test reports and other aspects to ensure that Safe to use in hazardous environments.

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