Empty container detector with drop sensor

Details Empty container detector with drop sensor Empty container detector with drop sensor

1986-12-04

1987-10-27

Levy, Stewart J.

Communications: electrical

Condition responsive indicating system

Specific condition

73293, 250577, G01F 2328

Patent

active

047033142

ABSTRACT:
An empty container detector for use with a drip chamber comprises a photoelectric transducer associated with the fluid container which generates a variable control signal to alternately indicate whether the light path of the photoelectric transducer is being refracted by a fluid. A second photoelectric transducer is associated with a fluid container above the fluid level in the container to establish a reference signal which is modulated by drops falling into the container and which has a component corresponding to the condition wherein the light path is not refracted or attenuated by the presence of a fluid. Electrical means are provided to connect the first photoelectric transducer to the second photoelectric transducer to linearize and normalize the reference signal with the control signal. A comparator is associated with the photoelectronic transducers and connected to an alarm which indicates when the control signal is substantially equivalent to the reference signal and thus indicating the lowering of the fluid level below the light path of the first photoelectric transducer. Another comparator is associated with the photoelectric transducers to count modulations in the reference signal as indicative of the drops entering the container.

REFERENCES:
patent: 2835252 (1958-05-01), Mauchel
patent: 3636360 (1972-01-01), Oishi et al.
patent: 4114144 (1978-09-01), Hyman
patent: 4244365 (1981-01-01), McGill et al.
patent: 4312341 (1982-01-01), Zissimopoulos et al.
patent: 4344429 (1982-08-01), Cupton et al.
patent: 4366384 (1982-12-01), Jensen
patent: 4367736 (1983-01-01), Gupton
"Circuit Optimizes Optical-Switch Biasing", by Wayne M. Spani, EDN Sep. 20, 1979.

Affiliated with

Also associated with

Rating

Empty container detector with drop sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1274551