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MB-7697 flame retardancy tester for safety helmet
    It is used to test the flame retardancy of the helmet.
    Experimental methods:
    The test should be carried out in a hood, the safety helmet temperature impact test in accordance with the normal wear direction of the clamp on the bracket, the side shell alignment of flame spray head, adjust the flame spray head axis axis passing through the cap shell and the shell in the upper edge of 50mm + 1mm, to avoid the opening of stomata; adjust the position of the support, end distance makes the test area safety helmet with flame spray head is 45mm + 1mm, and then removed; open the gas valve, adjust the flame length is 50mm + 2mm, blue flame guarantee at least 15mm will be moved to the front bracket; determine the location of the flame of the helmet shell 10s cut off the gas supply. The continuous ignition time and possible penetration are recorded, accurate to 0.1s.

    Conform to the standard:
    GB/T 28122006 "helmet" test method in the flame retardant safety helmet testing standard.
    GB/T 28112007
    1. Electronic ignition.
    2. Automatic timing positioning of the burner.
    3. The ignition time of 0-99.9 seconds set, continued burning time, smoldering time is automatically recorded, digital display.
    4. The flame height can be adjusted, the flame height measuring height can be measured to assist the fixed flame height, and the flame temperature measurement device is configured.
    5. "Push and pull" frame fixed device, "positioning wire" and "guide" auxiliary positioning.
    6. With high sensitivity to combustible gas leakage alarm device, such as the discovery of combustible gas alarm and automatic cut-off.
    The safety cap is firmly clamped to ensure stable position in the test and can be moved to adjust the distance between the helmet and the flame ejector head.
    The indication error is ± 1%, which is used to record the continuous ignition time and be accurate to 0.01s
    Timer The indication error is ± 1%. It is used to determine the time when the flame is applied to the safety helmet, and it can set the combustion time by itself. After the flame is finished, the Bunsen lamp can move itself, and the ignition time range is 0-999.9 seconds.
    Flame height measuring device
    High 50mm
    Horizontally placed fuel nozzle, internal diameter 10mm
    Fuel supply device
    Pressure regulating valve, air quantity regulating valve, gas storage tank device, can guarantee the flame jet head to spray 50mm length blue flame steadily
    A large enough box to ensure that the test is not affected by the wind
    Power supply voltage and power
    220V±10% 50HZ,Power about: 100W
    Inner diameter of the lamp
    Gas source
    Methane, propane, butane, liquefied petroleum gas
    Ambient temperature
    Relative humidity

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