Moisture sensing apparatus and method for an agricultural chemic

Details Moisture sensing apparatus and method for an agricultural chemic Moisture sensing apparatus and method for an agricultural chemic

1979-10-25

1981-03-03

Bagwill, Robert E.

Plant husbandry

Plant surface contact material applicator

324 61R, A01C 2300

Patent

active

042532728

ABSTRACT:
An apparatus and method for sensing the amount of liquid chemicals on the applicator roller of an agricultural chemical applicator are directed to an elongated sensor plate supported in generally parallel closely spaced relation to the roller and electrically insulated therefrom. Both the roller and sensor plate are electrically connected into an electrical circuit as opposite plates of a capacitor whereby the capacitance thereof increases with the amount of liquid chemicals on the roller. The electrical circuit interprets the capacitance as a measurement of the amount of liquid chemicals and compares that measurement to a predetermined value to provide an indication of whether additional liquid chemicals should be dispensed onto the roller.

REFERENCES:
patent: 3227951 (1966-01-01), Dykaar
patent: 3857095 (1974-12-01), Mitchie et al.
patent: 3936735 (1979-02-01), de Bough
patent: 3950698 (1976-04-01), Wochnowski
patent: 4208835 (1980-06-01), Roll et al.

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