Product Description:
Explosion limit Tester, HWP21-30SE, dedicated to testing and evaluating the combustion hazard of gases and flammable vapors, is applicable to measuring the upper flammability limit (UFL) and lower flammability limit (LFL) of gases, vapors or a combustible mixture of vapor and air at standard atmosphere pressure and a set temperature, and the test result can be used as an important reference factor for fire risk assessment.
Applications: chemical industry, pharmaceutical, pesticide, new energy, and scientific research.
Test Standard:
The test conforms to test methods of explosion limits of ASTM E681 chemicals (liquids and gases).
Features:
Optional test containers of 5L and 12L with good compatibility
Equipped with pressure relief door and spring loaded pressure relief mechanism
Dual interlock protection to ensure that if the door is not close, the ignition can not be started in the case of the door failure
Remote ignition controller can protect the operator from any possible dangers
Integrated design of heating and cooling processes makes the structure compact
High-precision pressure sensors automatically and accurately control the concentration ratio
Magnetic stirring adopted to mix gases  
Automatically clean sample containers to save manpower cost 
Protective doors with anti-fog windows and rear pressure relief doors adopted to make observation safe and convenient 
The monitoring system can record the whole experimental process. The final result and process can be investigated and evaluated again by the playback
Specification 
Test environment: 5℃～40℃, <85%RH
Test object : Gases, vaporizable liquids or solids 
Number of gas inlet channel: 2 
Temperature range of the cabinet: 0℃～180℃
Cabinet temperature control accuracy: ±1℃
Resolution of measurement: 0.1℃
Sample temperature measurement accuracy: ±0.5℃
Pressure measurement range: 100Pa～110kPa
Pressure measurement accuracy: ±0.1%FS
Vacuum limit: ≤1.33kPa
Spark gap of igniter: 6.4mm
Arc voltage/electric current of igniter: 15.0kV/30mA 
Spark Duration: 0s～1s
5L Glass Container’s Size: The diameter is 222mm and the height is 305mm
12L Glass Container’s Size:   The diameter is 295mm and the height is 378mm 
Stirring Speed: ≥300rpm
Connection port: USB
Power supply: AC220V/50Hz
Power: 3000W
Dimension: 930mm*600mm*1100mm
Weight: 200.0kg