Flammability Limits Tester
Category：Material Combustion Tester
Introduction
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
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.
FAQ
What does the Flammability Limits Tester measure?
It determines the upper and lower flammability limits of combustible gas mixtures with air or inert gases. The system monitors temperature, pressure, and gas composition to provide precise data for safety evaluation and research purposes.
How is safety ensured during testing?
The stainless steel container is sealed with a rubber stopper and includes a pressure relief device. The internal ignition system features interlock protection to prevent accidental ignition during gas mixing, and all operations are controlled through the Siemens PLC system.
How are temperature and pressure monitored?
Temperature is measured via a reserved internal sensor, while pressure is monitored using high-precision and conventional pressure sensors. The Siemens PLC and 7-inch HMI touchscreen provide real-time monitoring, display, and control of all test parameters.
Can the system perform automatic gas mixing and vacuuming?
Yes, the dedicated vacuum pump and pre-configured interfaces allow automatic evacuation, purging, and precise gas mixing according to set parameters. The PLC system ensures all operations are monitored and controlled safely.
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