Dust sampler

Dust sampler technical parameters:

1. Sampling flow rate: 5-30 L/min, 5-25 L/min, 10-25L/min, 1-10 L/min (flow rate optional) Respirable dust sampling flow rate: 20L/min

2. Sampling flow error: ≤±3%FS

3. Sampling flow stability: The sampling flow stability of the sampler within 60 minutes is ≤3.0%FS

4. Load capacity: ≥200Pa

5. Continuous working time: ≥100min

6. Working noise: ≤75dB(A)

7. Flow meter accuracy: not less than level 2.5.

8. Sampling time error: ≤±0.1% within 5 minutes

9. Average flow velocity of sampling port: 0.5～4.0m/s

10. Air tightness: The sampling head and flow meter of the sampler are maintained at a pressure difference of (1000-1100) Pa for 1 minute, and the pressure change shall not exceed 100 Pa.

11. Operating environment temperature: -10~40℃ Relative humidity: ≤95%

12. Explosion-proof type: mining intrinsically safe type ExibI (150℃), suitable for flammable and explosive workplaces and underground sampling in coal mines.

13. Intrinsically safe battery pack: Ni-H nickel-hydrogen battery 2.7A/h, 6 cells, connected in series with 4 0.51Ω/10W current-limiting resistors, potted with epoxy resin and placed in the battery box, rated voltage Ue :7.2V; its maximum output voltage U0: 9.0V; maximum output current I0: 4.52A.

14. Overall dimensions: 149×202×80 (mm)

15. Weight ≤1.75Kg

16. Operating environment temperature: 0~40℃ Relative humidity: ≤95%

17. Ambient atmospheric pressure: 80KPa ~ 110KPa underground coal mines containing gas or coal dust explosion hazards