Measuring and testing – Liquid level or depth gauge
Patent
1977-06-03
1979-01-23
Krawczewicz, Stanley T.
Measuring and testing
Liquid level or depth gauge
324 585B, 73304R, G01F 2328
Patent
active
041353978
ABSTRACT:
A system for measuring the height of material in a storage container by generating an incident pulse with a pulse generator and transmitting the pulse through a high impedance transmission line supported in a container. A reflected pulse of opposite polarity is generated at the interface of air and material in the container and is received by a reflected pulse detector which again triggers the pulse generator to continuously monitor the height of the material in the container. The time difference between the transmitted incident pulse and the received reflected pulse of opposite polarity is the indication of the height of the material in the container. A hold off delay disables the reflected pulse detector for a finite period of time so that the reflected pulse detector is not affected by noise signals on the transmission line. If no material is in the container and no reflected pulse of opposite polarity is received, then one automatic start pulse generator retriggers the pulse generator. An auxiliary transmission line of equal length to that in the container is used to calibrate the measuring system.
REFERENCES:
patent: 3424002 (1969-01-01), Johnson
patent: 3474337 (1969-10-01), Petrick
patent: 3695107 (1972-10-01), Hertz et al.
patent: 3703829 (1972-11-01), Dougherty
patent: 3832900 (1974-09-01), Ross
patent: 3853005 (1974-12-01), Schendel
patent: 3922914 (1975-12-01), Fuchs
patent: 3995212 (1976-11-01), Ross
Jaeger Hugh D.
Krawczewicz Stanley T.
LandOfFree
Level measuring system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Level measuring system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Level measuring system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2267557