Explosive Gas Lower and Upper Limit Testing Apparatus
Whats/App: +86 156 1874 6768
Web: standard-groups.com
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.
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