Fluid level measuring device with linear, high resolution output

Details Fluid level measuring device with linear, high resolution output Fluid level measuring device with linear, high resolution output

1981-06-08

1984-04-17

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250577, 73293, G02B 514

Patent

active

044436998

ABSTRACT:
A generated signal is passed through an elongated signal conveying element positioned preferably perpendicular to the surface of a fluid the level of which is to be measured. The signal is directed from the signal conveying element to a detector element which senses the signal output from the signal conveying element. The signal output detected in an optical embodiment varies logarithmically with the depth of immersion of the signal conveying element into the fluid. A preferred embodiment employs an electromagnetic wave, e.g., light, signal which passes through a light pipe signal conveying element. By nearly matching the light pipe index of refraction with that of the fluid, a predetermined precentage of the wave is lost into the fluid each time the light is reflected further along the pipe. The portion of light sensed at the detector, which is located where the unrefracted light exits, is readily converted to an output which varies linearly with the depth the light pipe signal conveying element is immersed into the fluid length.

REFERENCES:
patent: 2703876 (1955-03-01), Edmundson et al.
patent: 3448616 (1969-06-01), Wostl et al.
patent: 4160168 (1979-07-01), Funck
patent: 4287427 (1981-09-01), Scifres
patent: 4342919 (1982-08-01), Brogardh

Affiliated with

Also associated with

Rating

Fluid level measuring device with linear, high resolution output 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 level measuring device with linear, high resolution output, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fluid level measuring device with linear, high resolution output will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-97129