Oceanographic sensor with in-situ cleaning and bio-fouling preve

Details Oceanographic sensor with in-situ cleaning and bio-fouling preve Oceanographic sensor with in-situ cleaning and bio-fouling preve

1977-03-11

1978-06-06

Ciarlante, Anthony V.

Measuring and testing

Meteorology

Electric disturbance

G01R 300

Patent

active

040928586

ABSTRACT:
An oceanographic sensor which allows in-situ bio-fouling prevention and/or leaning of foreign matter from its surface while simultaneously operating in a sensor mode. The sensor mode is fabricated from crystal substance and utilizes the piezoelectric electric effect. Sensing elements are fabricated on either the outside or inside, or both sides, of the core depending upon what measurements need to be taken. When the sensor is submerged and excited by an electrical potential, at or near resonance, the sensor core will vibrate and remove all foreign matter from its surface. The cleaning and bio-fouling prevention is done concurrently with oceanographic parameter measurements made by the sensor. Also, it should be noted that when the transducer is vibrated at or near its resonant frequency at a level below the cavitation threshold, the transducer and sensor system deters all bio-fouling from adhering to the sensor surface. Therefore, the oceanographic sensor device of this invention allows both in-situ cleaning of contaminants and a bio-fouling prevention system for use with submerged transducers.

REFERENCES:
patent: 3509522 (1970-04-01), Whitfill
patent: 3559162 (1971-01-01), Granfors et al.
patent: 3564491 (1971-02-01), Granfors et al.
patent: 3821894 (1974-07-01), Roeben et al.
patent: 3928063 (1975-12-01), King et al.

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