Fluid presence detector

Details Fluid presence detector Fluid presence detector

1980-02-12

1981-07-21

Woodiel, Donald O.

Geometrical instruments

Area integrators

Electrical

73304R, 340620, G01F 2304

Patent

active

042790786

ABSTRACT:
A fluid level indicator circuit is used in cooperation with a probe attached to a long wire where the probe has first and second electrodes for contacting the surface of the fluid and leads communicating to the indicator circuit. The water level indicator has a low current high gain transistor and a power source which has sufficient potential to not only properly reverse bias the transistor when the probes are out of contact with the fluid but also properly forward bias when the probes are in contact with conductive fluid. A meter and current adjusting device are provided in series with a collector and emitter to provide an indicator when the probes are in or out of the water. The circuit also has a light to give a visual indication.

REFERENCES:
patent: 2480490 (1949-08-01), Mark, Jr.
patent: 2593252 (1952-04-01), Booth
patent: 3909948 (1975-10-01), Markfelt

Affiliated with

Also associated with

Rating

Fluid presence detector does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fluid presence detector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fluid presence detector will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2432252