Device for the detection of liquid surfaces

Details Device for the detection of liquid surfaces Device for the detection of liquid surfaces

1996-02-12

1998-01-06

Hannaher, Constantine

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250577, 250900, 250901, G01F 23292

Patent

active

057058156

ABSTRACT:
Device for the detection of liquid surfaces including a light source sending light onto a liquid surface, an oscillation element which is moved toward the liquid surface and causes the liquid surface to oscillate upon contact with the surface. The surface contact is detected by a light detector which picks up the radiation reflected by the liquid. Upon contact with the liquid, the light sent out by the light source is modulated by the oscillations of the liquid surface. The so modulated signal can be selectively identified by the detector.

REFERENCES:
patent: 4929829 (1990-05-01), Dedden et al.
patent: 5059812 (1991-10-01), Huber
patent: 5271902 (1993-12-01), Sakka et al.

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