Protection time: power 55W (medium labor intensity): 4 h Protection performance (within the rated protection time)

1. Oxygen concentration: ≥ 21%

2. Carbon dioxide concentration: ≤ 1.0%

3. Inspiratory temperature: ≤ 35 ℃ (26 ℃ ± 2 ℃ ambient temperature)

4. Respiratory volume: 30 l/min

5. Expiratory resistance: ≤ 600 pa

6. Suction resistance: 0 ~ 600 pa

7. Opening pressure of demand valve: (10 ~ 245) Pa

8. Opening pressure of exhaust valve: 400 ~ 700 pa

9. Filling amount of calcium hydroxide: 2.1 kg

Oxygen supply mode: 1. Quantitative oxygen supply: ≥ 1.4 l/ min 2. Manual oxygen supply: ≥ 80 l/ min 3. Automatic oxygen supply: ≥ 80 l/ min

 Oxygen bottle 1. Volume: 2.4 L 2. Rated filling pressure: 20 MPa 3. Oxygen reserve: ≥ 480L