Liquid level detector with hysteresis means

Details Liquid level detector with hysteresis means Liquid level detector with hysteresis means

1977-11-16

1980-12-30

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250214RC, G01F 2300

Patent

active

042425905

ABSTRACT:
An indicating device is disclosed for showing the level of a fluid in a container. A transparent rod having a sensing end is immersed in the fluid when the container is filled above a predetermined level. The sensing end is shaped to cause a substantially total reflection of a beam of light projected in the rod from an opposite end of the rod when the sensing end is not in contact with the flowable substance. A light source and photoelectric detector are arranged at the opposite end of the rod and a circuit is connected to the photoelectric detector for detecting when a predetermined amount of reflection occurs and also for preventing response of the device to slopping of the fluid to and fro in the container.

REFERENCES:
patent: 3485262 (1969-12-01), Perren
patent: 3683196 (1972-08-01), Obenhaus
patent: 3835313 (1974-09-01), Stiefelmeyer et al.
patent: 3995169 (1976-11-01), Oddon
patent: 4134022 (1979-01-01), Jacobsen

Affiliated with

Also associated with

Rating

Liquid level detector with hysteresis means 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 detector with hysteresis means, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Liquid level detector with hysteresis means will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-9191