20L Spherical Explosion Tester
20L Spherical Explosion Tester is characterized by accurate test data and ease of use. Its through the compressed air will be a certain mass of dust specimen diffusion to the 20L spherical explosion container, the use of specified energy of the chemical ignition head or electrostatic ignition head of the dust cloud ignition, measurement of the explosion container in the pressure and time change curve, to obtain the maximum explosion pressure in the test and the maximum rate of rise of pressure, and then calculated to get the explosion index. Maximum explosion pressure, maximum explosion pressure rise rate and explosion index and other parameters can be used for explosion relief design and explosion suppression design. The instrument is mainly used for dust explosivity assessment in production and processing places such as aluminum powder, zinc powder, plastic powder, intermediates of organic synthetic drugs, wheat flour, sugar, wood chips, dyes, glue wood ash, milk powder, tea powder, tobacco powder, coal dust, plant fiber dust, and so on, to accurately determine the maximum explosion pressure of the dust cloud, the maximum rate of rise of the explosion pressure, the explosion index, the explosion of the lower limit and the limiting oxygen concentration and other parameters.
Applications
This instrument is used to measure the explosion index of dust or gas mixtures. The instrument uniformly sprays a dust or gas mixture into a confined space, and induces the test object to explode under the stimulation of an adjustable energy ignition source. The instrument measures the explosion index at the moment of explosion, including parameters such as the maximum explosion pressure pmax of dust, the maximum explosion pressure rise rate Kst, the lower explosion limit LEL of dust, the maximum explosion pressure pmax of gas, the maximum explosion pressure rise rate Kg, and the gas explosion limits (LEL and UEL), providing data support for the study of explosion suppression measures.
Standards
ASTM E1226:Standard Test Method for Minimum Ignition Energy of Dust Clouds in Air
ASTM E1515:Standard Test Method for Minimum Ignition Temperature of Dust Clouds by Electrically Heated Surface
EN 14034-1:Determination of Explosion Characteristics of Dust Clouds - Part 1: Determination of the Maximum Explosion Pressure (Pmax) and the Maximum Rate of Pressure Rise ((dp/dt)max) of Dust Clouds
EN 14034-2:Determination of Explosion Characteristics of Dust Clouds - Part 2: Determination of the Limiting Oxygen Concentration (LOC) for Dust Clouds
EN 14034-3:Determination of Explosion Characteristics of Dust Clouds - Part 3: Determination of the Minimum Ignition Energy (MIE) of Dust Clouds
EN 14034-4:Determination of Explosion Characteristics of Dust Clouds - Part 4: Determination of the Minimum Ignition Temperature (MIT) of Dust Clouds
EN ISO/IEC 80079-20-2:Explosive Atmospheres - Part 20-2: Equipment Protection Levels (EPL) - Classification of Equipment for Dust Atmospheres
ISO/IEC 6184/1:Explosive Atmospheres - Equipment for Explosive Gas Atmospheres - Part 1: General Requirements for Construction, Testing and Marking
ISO/IEC 6184/2:Explosive Atmospheres - Equipment for Explosive Gas Atmospheres - Part 2: Test Methods and Data for Determining Ignition Temperatures of Equipment Surfaces
Features
1) Can test dust, gas and the simultaneous existence of solid / gas mixture of the explosion parameters of the system.
2) Built-in international common test standards, can be tested according to standard parameters, can also be customized.
3) With chemical ignition and electrostatic ignition two ways, applicable to different test purposes.
4) The explosion container has a water circulation jacket to realize the constant temperature of the test environment.
5) Input the target concentration value, automatic cleaning, vacuum, and complete the gas distribution according to the requirements.
6) Dust dispersing device can completely disperse the dust into the explosion container.
7) The experiment is carried out automatically without human intervention.
8) Real-time display of time and pressure, the test process is more intuitive.
9) The results include time - pressure curve, providing detailed information on the explosion.
10) Remote control, to ensure the personal safety of experimental personnel.
11) The use of computer control, data analysis capabilities, curve characteristics of accurate judgment.
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