Flammability Limits Tester，ISO 10156 combustion limits test apparatus

Whats/App: +86 156 1874 6768

Web: standard-groups.com

The Flammability Limits Tester is designed to determine the upper and lower flammability limits of combustible gas mixtures with air or inert gases at ambient or controlled temperatures. The system can perform vacuuming, gas mixing, and ignition according to preset parameters, providing precise and safe evaluation of flammability limits for laboratory and industrial applications.

Application

The Flammability Limits Tester is suitable for:

Determining the upper and lower flammability limits of chemical gases and vapors.

Safety evaluation of industrial gas mixtures in laboratories and production facilities.

Research on combustible gas behavior under controlled temperature and pressure conditions.

Specific Testing Equipment:

Combustible gas sample containers

Gas mixing and vacuum control modules

Ignition control systems

Temperature and pressure monitoring devices

Standards

The system complies with the following national and international standards:

GB/T 21844-2008 – Standard Test Method for Flammability Limits of Compounds (Vapors and Gases) (China)

ASTM E918-19 – Standard Test Method for Flammability Limits of Chemicals at Elevated Temperatures and Pressures

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

EN 1839 – Determination of Flammability Limits of Gaseous Fuels

Parameters

Unit	Specification
Environmental Temperature	Adjustable: ambient ~ 200 °C, control accuracy ±1 °C
Sealed Container	Standard 8 L stainless steel vessel
High-Precision Pressure Sensor	Range: 0–200 kPa (absolute), for precise gas mixing
Conventional Pressure Sensor	Range: -0.1~3 MPa, for auxiliary container pressure monitoring
Auxiliary Gas Source	Air / Nitrogen / Test gas
Dimensions	800 (W) × 600 (D) × 1300 (H) mm
Power Supply	AC 220 V, 50/60 Hz, 10 A
Weight	Approx. 150 kg

Features

Equipped with a dedicated gas vacuum pump to evacuate the stainless steel container and perform purging functions.

Container sealed with rubber stopper and pressure relief device to ensure safe operation.

Container interfaces pre-configured for gas mixing, vacuuming, and pressure monitoring, accommodating diverse testing needs.

Reserved temperature sensor port for precise internal temperature measurement.

Internal ignition device controlled externally with interlock protection to prevent accidental ignition during gas mixing.

Observation window enables visual monitoring of test phenomena.

Siemens PLC with analog modules and 7-inch HMI touchscreen allows real-time control, monitoring, and data acquisition for temperature, pressure, gas mixing, and ignition processes.

Accessories

Stainless steel 8 L sealed container

Dedicated vacuum pump

Rubber stopper with pressure relief device

Gas mixing, vacuum, and pressure monitoring interfaces

Internal ignition device with interlock protection

Temperature sensor port

Observation window

Siemens PLC system with analog modules

7-inch HMI touchscreen

Data acquisition and storage modules

Test Procedures

Install the gas sample into the stainless steel container and seal with rubber stopper.

Evacuate the container using the dedicated vacuum pump and purge with inert or test gas as required.

Set the target environmental temperature using the control system.

Mix the gas to the desired concentration using the pre-configured interfaces and monitor with pressure sensors.

Initiate ignition via the internal ignition device; interlock protection prevents accidental ignition during gas mixing.

Observe combustion behavior through the observation window.

Record temperature, pressure, and other relevant data in real time via the PLC and HMI touchscreen.

Store or export data for analysis and reporting.

Maintenance Information

Regularly inspect and clean the container and rubber stopper to ensure tight sealing.

Check and calibrate high-precision and conventional pressure sensors periodically.

Ensure vacuum pump operates efficiently and perform routine maintenance.

Clean observation window to maintain clear visibility.

Verify ignition device and interlock protection system function properly before testing.

Confirm PLC, HMI touchscreen, and data acquisition modules are operational and software is up-to-date.

Conclusion

The Flammability Limits Tester provides a reliable solution for evaluating the upper and lower flammability limits of gases under controlled temperature and pressure conditions. Its integrated vacuum, gas mixing, ignition, and monitoring systems ensure precise, safe, and repeatable testing. The robust design, real-time data acquisition, and compliance with national and international standards make it ideal for laboratories, industrial safety testing, and research applications.

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