Liquid-level detection

Details Liquid-level detection Liquid-level detection

1982-09-16

1984-04-03

Frankfort, Charles

Measuring and testing

Liquid level or depth gauge

With illumination

250577, 340619, G01F 2308

Patent

active

044400225

ABSTRACT:
An oil-level detector is mounted on the outside face of a glass window in the wall of an oil tank. The detector has two fibre-optic cables which extend within a cavity between the detector and the window. The ends of the cables are mounted one above the other, one cable transmitting a beam of light at an angle .alpha. of 60.degree. to the window, through an oil in the cavity which has a refractive index substantially equal to that of the window glass. The angle .alpha. is greater than the critical angle of glass with air, and less than the critical angle of glass with the oil in the tank. When the window is covered by oil in the tank the light is refracted into the tank. When the oil level falls below the window, the light is reflected to the other cable which is connected to a control unit. The control unit gives a warning a predetermined time after the level has fallen.

REFERENCES:
patent: 3808887 (1974-05-01), Buttriss
patent: 4297588 (1981-10-01), Hastbacka
patent: 4354180 (1982-10-01), Harding

Affiliated with

Also associated with

Rating

Liquid-level detection does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-661618