FAQ - 気中微粒子

Gas Particle Counter

質問 圧縮ガスの試料を使用できますか？

回答

Not unless you use a separate pressure diffuser, often called a High-Pressure Diffuser (HPD), and still, the gases should be inert and non-toxic. Aerosol instruments are calibrated at standard ambient pressures (≈ 14.7 psi), so sampling at pressures that differ from ambient will provide erroneous data. C

Commonly, the HPD uses a series of critical orifices to reduce pressures from 40-100 psi to ambient. Then, the particle counter can sample the airborne particles with minimal data loss.

Learn more by reading Selecting an Aerosol Particle Counter

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