【Test items】
Dead Space Tester is used for dead space.
【Applicable standards】
EN 149 Respiratory protective devices-Filtering half masks to protect against particles-Requirements, testing, marking
【Technical parameters】
1. Working environment: Concentration of CO2 in the surrounding air ≤ 0.1%
2. Carbon dioxide gas source: Volume fraction of CO2 gas (5 ± 0.1)%
3. CO2 flowmeter: CO2 mass flow controller with analog input and output signals can be automatically adjusted and measured by computer program; Flow range: 0-50L / min, accuracy: Level 2.
4. Equipped with CO2 analyzer: Range 0 ~ 12%, accuracy class 1; CO2 sensor is used brand: Servomex.
5. Equipped with CO2 analyzer: Range 0 ~ 5%, accuracy class 1; CO2 sensor is used brand: Servomex.
6. Equipped with a hand-held anemometer, measuring range: 0 to 10 m / s, accuracy: ± (0.1m / s + 5% of measured value) measurement range (0 to 2m / s), the anemometer is used brand: Testo.
7. Equipped with floor-standing electric fan.
8. The adjustment range of artificial lung breathing frequency is (10 ～ 40) times / min, and the adjustment range of respiratory tidal volume is (0.5 ～ 3.0) L.
9. The instrument is operated by computer. Using the Detection control program and ZWH4500 acquisition control card to realize the functions of program control, data acquisition, calculation of test results and print reports, data storage and historical data query.
10. Total power supply: AC220V, power 500W.
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