| 摘要 |
FIELD: investigating or analyzing materials. ^ SUBSTANCE: device comprises sampling nozzle made of a hollow pipe, automatic control means, and filters. The inlet section of the sampling nozzle receives the calibration washer with fixed flow section. Downstream of the outlet section of the sampling nozzle are stop valve, cyclonic chamber, and bubbling chamber connected in series and to the gas pipeline. The bubbling chamber is filled with the anticoagulation fluid and has a free space. The space is connected with the fine filter through the control valve and calibrating washer. The flow section of the calibrating washer is smaller that that of the calibrating washer. The inner side of the sampling nozzle is made of a sublimating material throughout the length of at least 10 diameters of the flow section of the calibrating washer. The gas pipeline between the stop valve and bubbling chamber receives the system for pressurizing with the neutral gas. ^ EFFECT: enhanced reliability of sampling. ^ 1 cl, 1 dwg |
