20 Liter Explosion Test Chamber

Whats/App: +86 156 1874 6768

Web: standard-groups.com

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

Technical Parameters

Operating Environment	(5～45)℃, <85%RH
Explosive Vessel	20L ball with jacket
Vessel Pressure Resistance	Design pressure 3.0MPa@25℃
Sphere Material	Stainless steel 316
Sphere Operating Temperature	Maximum temperature 220℃
Sphere Volume	20L
Mezzanine Volume	1.5L
Diffusion Pressure Sensor	Range (0～3.5)MPa, overload pressure 10.5MPa,
Dispensing Pressure Sensor	Accuracy ±0.1% FS, working temperature (-40～105)℃
Explosive Pressure Detection	Range (0～200)kPa, overload pressure 600.0 kPa,
Explosive Pressure Detection Channels	Accuracy ±0.1% FS, working temperature (-40～105)℃
Explosive Temperature Sensor	Detection range (0～10.0)MPa, resolution 0.001MPa,
Dust Diffusion Vessel	Accuracy ±0.5%FS, response time<20μs
Powder Spraying Pressure	2 pcs
Nozzle Type	Detection range (0～1000)℃, resolution 0.01℃
Powder Spraying Delay Time	Capacity 0.6L, pressure resistance 2.5MPa
Ignition Mode	2.0MPa
Ignition Delay Time	Bounce back nozzle
Explosive Pressure Data Acquisition	(30~50)ms
Ignition Control	Chemical ignition: customer's own
Ignition Head Condition Detection	Electrostatic ignition: 15kV, 0.5s
Automatic Gas Dispensing	60ms
Vacuum System	Maximum collection rate 100 ks/s, recording time 1s
Snap Ring Diameter x Diameter	Remote wireless ignition support
Viewing Window	Electrochemical ignition head contact state and fusion state judgment
Interface	2 air intakes, 1 air inlet; using partial pressure method of gas distribution, with an independent pressure sensor and electromagnetic valves, gas distribution accuracy ±1%. Solenoid valve, gas distribution accuracy ±0.1%
Power	Rotary vane vacuum pump, equipped with double impact filters to prevent residual substances from clogging and contaminating the pipeline, and easy to replace
Power	95mm
Dimensions	150mm
Operating Environment	Armored glass, 40mm in diameter

Accessoriess

1. 20L spherical explosion test container (with water circulation jacket to maintain a constant test environment temperature)

2. Dual ignition assembly: chemical igniter and electrostatic igniter (adaptable to different testing needs)

3. Dust sample diffusion device (works with compressed air to achieve uniform dust cloud distribution)

4. Automatic cleaning & vacuum module (for container pretreatment and post-experiment cleaning)

5. Pressure-time curve detection sensor (accurately collects pressure and time data during the explosion process)

6. Gas mixing assembly (enables configuration of gas/gas-solid mixtures at target concentrations)

7. Water circulation jacket connection piping (piping accessories to ensure constant container temperature)

8. Calibration standard dust sample (calibration components adapted to reference standards)

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