Electricity: measuring and testing – A material property using electrostatic phenomenon
Patent
1990-06-22
1992-05-26
Wieder, Kenneth A.
Electricity: measuring and testing
A material property using electrostatic phenomenon
324457, G01N 2760
Patent
active
051171902
ABSTRACT:
Electrostatic detector according to claim 2, characterized in that it is constituted by a flattened circular cylindrical case (2) having two axial pipes, one for injecting a gas (4) into the lower part of the case and the other for extracting the gas (8) in the upper part of said case, the latter being provided on its upper periphery with an annular slot (12) for the entry of the atmosphere to be analyzed and, in its center, a solid thick disk (14), whose upper face supports one of the two conductive disks (16), the second conductive disk (18) being constituted by the upper cover of the case, the injection gas flow passing round the thick disk after passing through a filter (20) for the purification and uniform distribution of its flow.
REFERENCES:
patent: 3566107 (1971-02-01), Taylor et al.
patent: 4117715 (1978-10-01), Hoenig
patent: 4387369 (1983-06-01), Klein et al.
patent: 4556849 (1985-12-01), Kalakutsky et al.
Schowengerdt et al, "A Parallel-Plate Electrostatic Size Classifier for Aerosol Particles" Rev. Sci. Instrum. 51(8) Aug. 1980, pp. 1098-1104.
O. G. Raabe, "Instruments and methods for characterizing radioactive aerosols", IEEE Nuclear Science, vol. NS-19, Feb. 1972, pp. 64-75.
Commissariat a l''Energie Atomique
Wieder Kenneth A.
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