Medical Face Masks Gas Exchange Pressure Difference Detector EN14683-2019
The main purpose:
It is suitable for the second-level and third-level test of the protective performance of the protective mask after six different parts of the flame are simultaneously ignited for a certain period of time.
Standards:
BS EN 136-1998 : Respiratory protective devices — Full face masks — Requirements,testing, marking
GBT19083-2010,GBT 2890-2009,GBT 2626-2006
Technical parameters:
The total gas supply flow rate of the six igniters | (21 ± 0.5) L / min |
The gas pressure range | 0 ~ 10kPa |
The flame temperature | (950 ± 50) ℃ ,at a height of 250mm from the top of the burner |
The distance between the top of the burner and the six ignition points of the mask | 250mm |
The thickness of the metal head mold | 2 ~ 3mm,which is resistant to flame and flame. |
Ignition time timer | 0 ~ 99.99 seconds, accuracy: ± 0.01 seconds |
Working power supply | |
1. The burner can adjust the flame height of each burner
2. The diameter of the flame temperature measurement probe is 1.5mm (K-Type thermocouple measurement)
3. The head mold can be worn with a mask.
4. Rotating device with head mold
5. The gas automatic blocking device can block the gas supply 5 seconds after the test starts
6. After the test, record whether the sample is kept burning for 5 seconds
Instrument features:
1. The mask fixture is a metal human head model, which can fully simulate the actual use state of the mask.
2. The burner is equipped with combustible gas interface such as propane (liquefied gas).
3. The height of the burner is adjustable.
4. The burner is automatically positioned regularly.
5. The burning time and flame retardant time are automatically recorded and displayed digitally.
6. Equipped with flame temperature measurement probe and flame temperature display.