Wheelchair seat position support device flame retardant tester Qing Qing Qing 668

LFY-668 wheelchair seat position support device flame retardant tester

main purpose

This instrument is used to test the flame retardant performance of the material assembly of the position support device of wheelchair seats into horizontal or vertical samples (such as seat surface, backrest, side support, headrest, pelvic positioning belt, torso support) after being subjected to a heat source equivalent to that of a smouldering cigarette.

technical parameters

1 Using a specially designed stainless steel fume hood testing environment, the size of the fume hood meets the testing requirements,The test bench device is tested in a closed environment inside a fume hood (the front door of the fume hood can be opened and closed, with an observation window);During the experiment, the fume hood fan and door are closed, and the heat source in the experimental bench area is also closed100 mm±5 mmThe speed of internal air circulation is less than0.02 m/sThe fume hood is placed in the laboratory, and both the laboratory and the fume hood are enclosed environments. The fume hood has ventilation holes that can be connected to the laboratory air, but the wind speed is close to0）. The fume hood is equipped with air pipes that can be connected to the laboratory's ventilation ducts for smoke exhaust. The fume hood has a certain air velocity0.5-0.6m/s.

2The equipment complies withGB/T 30661.10-XXXXTheISO 16840-10:2021.

3The test bench meets the requirementsISO 8191-1The regulations. Frame height450 mm±2 mmThe width is450 mm±2 mmThe test bench can be used for both horizontal and vertical tests.

4Timer range:0～99.99s/m/hAccuracy: ±0.01 s.

5Heat source: Imported temperature controller and thermal sensor are used. Heating rod:HotSet HotConrol C248It consists of two parts.

a)The heat source meets the following criteria:

Diameter8 mm±0.5 mm；

Heating length is75 mm±5 mm；

The thermal power is200 W±20 W；

Integrate in the heat source centerKType thermocouple;

The shortest wire length is3 m；

Heat resistant wires are insulated materials;

The device used to fix the heat source during the experiment to avoid burns when operating the heat source.

b)Temperature controller:

A temperature controller that automatically recognizes the temperature of the control area or adjusts the controller parameters based on the model;