Large Flame Exposure Test Chamber for Certification Laboratories

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Parameters

Test Procedures

Sample Preparation: Prepare samples according to the test standard requirements, ensuring that the size, shape, and quantity of the samples meet the test requirements.

Equipment Calibration: Check that all components of the equipment are functioning correctly, such as the ignition device and flow meter. Ensure that the gas supply system is in good working order.

Sample Installation: Secure the sample in the sample holder, ensuring its stability and vertical alignment during the test.

Gas Mixing and Supply: Adjust the flow rates of oxygen and nitrogen (if applicable) according to the test requirements, and supply the mixed gas to the combustion chamber after mixing in the mixing chamber. Ensure that the oxygen concentration of the mixed gas meets the test standard requirements (if applicable). For large-flame flammability testers, the focus is primarily on the supply of combustible gas and the stability of the flame.

Ignition and Timing: Turn on the ignition device to ignite the burner. Simultaneously start the timing device to record the burning time of the sample. When the sample burns to the specified length or the burning time reaches the preset value, turn off the ignition device and the gas supply system.

Data Recording and Analysis: Record all data during the test process, such as burning time and flame spread rate. Calculate the relevant parameter values according to the test standard requirements, and analyze and interpret the test results.

Maintenance Information

(1) Inspect gas lines, burners, and flowmeters for proper function and leaks.

(2) Clean the stainless steel chamber regularly to prevent soot buildup.

(3) Ensure timing system accuracy and check the calibration of the flowmeter periodically.

(4) Replace worn sample holders and burner nozzles as needed.

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