高流量流阻測(cè)試與分析儀（HF SIGMA：High Airflow Resistance Meter） The high airflow resistance meter (HF SIGMA) is designed to obtain reliable measurements of the airflow resistance, normalized resistance, resistivity, and viscous permeability in function of flow velocity for a wide range of open cell materials.
 
高流量流阻測(cè)試與分析儀（HF SIGMA：High Airflow Resistance Meter）設(shè)計(jì)用于獲得各種開孔材料的氣流流阻、流阻率以及粘性滲透率的可靠測(cè)量。
 
對(duì)于100毫米直徑的材料樣品，流速?gòu)?0cm/s上升到280cm/s（取決于大氣條件），測(cè)得的壓降可高達(dá)17千帕。
 
The flow velocity goes from 10 cm/s up to 280 cm/s for a 100 mm diameter sample (it depends on the atmospheric condition) and the measured pressure drop can be up to 17 kPa.

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