| 摘要 |
FIELD: investigating or analyzing materials. ^ SUBSTANCE: sampler has chamber for air flow, inlet and outlet openings for air, and means for supplying fluid to the air flowing through the chamber to entrain particles in the air flow. The sampler has a means for accumulating the entraining liquid and entrained particles and settling them in the accumulating chamber. The sampler is provided with a device for returning the accumulated entraining liquid to the chamber for air flow and means for detecting bubbles in the liquid to be returned. ^ EFFECT: improved design. ^ 11 cl, 2 dwg
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