Abstract

ABSTRACT AN electronic, buffer amplifier circuit was designed, developed, and field tested to evaluate electro-static charging of aerial sprays. The circuit was designed to detect the passage of an electrostatically charged aircraft; the falling of charged-particle, spray-cloud plumes; and the spray charge deposited upon a sphere. The relatively simple, stable, and inexpensive circuit accomplished the above satisfactorily. In addition, strip chart recordings showed that the amount of time between spray release and spray deposition could be accurately determined. More important, however, the possibility of quantitating electronically the volume of spray deposited upon a spherical sampling surface was demonstrated. Such a possibility could lead to very rapid field assessment of spray deposits across the spray swath for electrostatically charged aerial sprays

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