Cumulative Test Time (s) | Interval Time (s) | Operation |
---|---|---|
0–540 | 540 | Aspirate PI-SWERL bell and record PM10 concentration |
0–60 | 60 | No ring movement |
61–105 | 45 | Accelerate ring to 2000 RPM |
106–165 | 60 | Maintain ring at 2000 RPM |
166–210 | 45 | Accelerate ring to 3000 RPM |
211–270 | 60 | Maintain ring at 3000 RPM |
271–315 | 45 | Accelerate ring to 4000 RPM |
316–375 | 60 | Maintain ring at 4000 RPM |
376–420 | 45 | Accelerate ring to 5000 RPM |
421–480 | 60 | Maintain ring at 5000 RPM |
481–540 | 60 | Decelerate ring to 0 RPM |