Gas Explosion Pressure Test Apparatus，ISO 10156 combustible gas explosion test apparatus

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The Gas Explosion Pressure Test Apparatus is designed to measure the explosion characteristics of gases in a sealed testing chamber. By filling the evacuated chamber with the test gas and igniting it under controlled conditions, the system automatically records internal pressure and temperature changes. This allows determination of maximum explosion pressure (Pmax), explosion pressure rise rate, and maximum explosion pressure rise rate. The apparatus is suitable for evaluating gas release Pmax values in compliance with UL 9540A standards. Note that gas mixture preparation or liquid flammable substance evaporation equipment is not included and must be configured separately if required.

Application

The Gas Explosion Pressure Test Apparatus is suitable for:

Measurement of maximum explosion pressure (Pmax) and pressure rise rate of industrial and laboratory gases.

Testing gases released from battery systems or other energy storage devices according to UL 9540A.

Laboratory research on explosion characteristics of various combustible gases.

Specific Testing Equipment:

Gas sample chambers for combustion/explosion testing

Pressure and temperature data acquisition systems

Industrial and laboratory safety testing devices

Standards

The system conforms to the following national and international standards:

BS EN 15967:2011 – Determination of maximum explosion pressure and maximum rate of pressure rise of gases and vapours

UL 9540A – Standard for Testing Energy Storage Systems and Equipment

ISO 10156 – Gases and Gas Mixtures – Determination of Flammability Limits

ASTM E1226 – Standard Test Method for Explosibility of Dust Clouds

Parameters

Unit	Specification
Explosion Pressure Acquisition	Dynamic data acquisition card, 24-bit resolution, 128 KS/s sampling frequency
Chamber Interior	Built-in 19-inch touch screen, integrated electrical control circuits for mobility
Test Container	Sphere structure, internal volume ≈ 20 L, internal radius 168 mm, wall thickness 12 mm, stainless steel, max. pressure 3 MPa
Chamber Pressure Rating	Maximum 3 MPa, constant endurance ≥ 2 MPa, engineering safety valve rated 2.5 MPa
Ignition Electrode	Center-mounted, diameter 4 mm, tip angle 60°, distance between tips ≈ 5 mm
Thermocouple	K-type armored, range 0–1000 °C, accuracy 0.1 °C
Explosion Container Dimensions	1800 (L) × 750 (D) × 1750 (H) mm
Control Box Dimensions	650 (W) × 675 (D) × 1750 (H) mm
Power Supply	AC 220 V, 50/60 Hz
Weight	Approx. 330 kg
Auxiliary Gas Source	Nitrogen

Features

Electrical control cabinet with metal frame and electrostatic spray finish; resistant to dirt, wear, and oil; easy to clean and visually appealing.

Siemens PLC with analog modules controls vacuum, purging, temperature, and pressure readings; real-time monitoring of temperature, pressure, explosion pressure, and explosion slope.

Test data can be exported as Excel, Word, or PDF for reporting and analysis.

Sphere front features explosion-proof observation window; top equipped with threaded ignition device.

Thermocouple mounted via rear flange, replaceable for maintenance or specific testing needs.

Multiple interfaces for vacuum, sample gas inlet, purging, manual sampling, and pressure monitoring; includes several ½-inch ports for additional customer-configured devices.

Ignition electrode fixed on removable threaded flange for easy cleaning of carbon deposits.

Thermocouple fixed with threaded ferrule interface for easy installation and sealing.

Manual ball valve for post-test gas sampling and analysis.

Accessories

Stainless steel spherical test container

Explosion-proof observation window

Ignition electrode assembly

K-type armored thermocouple with flange and ferrule interfaces

Siemens PLC and analog modules

19-inch touch screen

Electrical control cabinet with industrial PC and data acquisition modules

Manual ball valve

Safety pressure relief valve (2.5 MPa)

Auxiliary nitrogen supply interface

Test Procedures

Ensure the chamber is evacuated and all connections are secure.

Fill the test container with the desired gas sample to the required concentration.

Activate the PLC-controlled system to monitor temperature and pressure in real time.

Initiate ignition via the central electrode.

Observe internal explosion event through the explosion-proof window.

Record pressure, temperature, explosion slope, and rise rate via dynamic data acquisition system.

Collect gas samples post-test using manual ball valve for further analysis.

Export all recorded data for report generation in Excel, Word, or PDF format.

Maintenance Information

Inspect and clean the ignition electrode regularly to remove carbon deposits.

Verify thermocouple calibration and replace if necessary.

Check all ports, flanges, and threaded interfaces for gas-tight integrity.

Ensure PLC, data acquisition modules, and industrial PC are operating correctly.

Clean observation window to maintain visibility during tests.

Test safety valves and pressure relief systems periodically for proper functionality.

Conclusion

The Gas Explosion Pressure Test Apparatus provides a comprehensive solution for evaluating explosion characteristics of gases under controlled laboratory or production conditions. Its integrated sphere design, real-time data acquisition, precise PLC control, and flexible interfaces allow accurate measurement of maximum explosion pressure, pressure rise rate, and related parameters. The robust construction, user-friendly operation, and compliance with international standards make it ideal for research, industrial safety testing, and energy storage system evaluation.

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