| 摘要 |
PROBLEM TO BE SOLVED: To heighten a separation effect between a sample powder and a frictional counterpart powder by controlling the flow of gas from the gas inflow side of a Faraday cage to the discharge side. SOLUTION: This measuring device is so constructed that the gas inflow side of a Faraday cage 1 is provided with an opening 16 capable of freely permitting inflow gas, the gas discharge side is provided with a vortex generation opening for generating a vortex along the face of a wire net 2, the gas discharge side terminal is provided with a gas sucking means, gas is made to flow in from both of the above by suction of the gas sucking means, with mixed powder previously distributed uniformly on the face of the wire net, compressed gas is blown from an upper nozzle provided above the Faraday cage 1 to heighten a separation effect between sample powder 4 and frictional counterpart powder 6 and efficiently pass the sample powder 4 through the meshes of the wire net 2, and only the frictional counterpart powder 6 is left behind on the face of the wire net 2 in the Faraday cage 1.
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