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Class Information
Number: 250/357.1
Name: Radiant energy > Invisible radiant energy responsive electric signalling > Fluent material level signalling
Description: Subject matter which includes a body of fluent material, a radiant energy source, and a detector responsive to the source arranged so that the body of fluent material is located in the radiation path between the source and detector or the body of fluent material supports either the source or detector, wherein the detector produces an output representative of the height or depth of the body of fluent material and methods corresponding to the apparatus.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7473897 |
System, method, and computer program for conducting optical transmission measurements and evaluating determined measuring variables |
Jan. 6, 2009 |
| 7367226 |
Interface detection apparatus and method for detecting hidden interface using microwave |
May. 6, 2008 |
| 7247857 |
Method and an apparatus for detecting water on a ship's deck |
Jul. 24, 2007 |
| 7132662 |
Flexible liquid-filled radiation detector scintillator |
Nov. 7, 2006 |
| 7078698 |
Specimen sensing apparatus |
Jul. 18, 2006 |
| 6879425 |
Device for determining and/or monitoring the density and/or the level of a filling material in a container |
Apr. 12, 2005 |
| 6753532 |
Method for detecting and suppressing extraneous radiation influences in radiometric measurements |
Jun. 22, 2004 |
| 6662649 |
Material level monitoring and reporting |
Dec. 16, 2003 |
| 6658933 |
Fill-level indicator for a liquefied-petroleum-gas tank |
Dec. 9, 2003 |
| 6640618 |
Method for detecting and measuring foam forming compounds in aqueous solutions |
Nov. 4, 2003 |
| 6633625 |
Density profiler for measuring density profile of a medium and method and apparatus using same |
Oct. 14, 2003 |
| 6548814 |
Arrangement and a method for measuring level, interface level and density profile of a fluid in tanks or containers |
Apr. 15, 2003 |
| 6405580 |
Apparatus for detecting and measuring foam forming compounds in aqueous solutions |
Jun. 18, 2002 |
| 6198103 |
Nuclear level sensing gauge using scintillating fiber bundle |
Mar. 6, 2001 |
| 6104033 |
Method of determining fluid level and interface in a closed vessel |
Aug. 15, 2000 |
| 5868859 |
Use of infrared radiation in detection methods to defoam aqueous systems |
Feb. 9, 1999 |
| 5739534 |
Methods and apparatus for detecting fluids |
Apr. 14, 1998 |
| 5698797 |
Device for monitoring a ball grinder |
Dec. 16, 1997 |
| 5679956 |
Enhanced vehicle radiation monitoring system and method |
Oct. 21, 1997 |
| 5594250 |
Method for detecting water equivalent of snow using secondary cosmic gamma radiation |
Jan. 14, 1997 |
| 5569914 |
Method for measuring height of fill in a production tubing/casing annulus |
Oct. 29, 1996 |
| 5509460 |
Solid/liquid interface detection in continuous casting processes by .gamma. - |
Apr. 23, 1996 |
| 5502380 |
Analog weighted binary absolute position encoder including an array of sense resistors each having material responsive to FWX and nonresponsive to flux |
Mar. 26, 1996 |
| 5376798 |
Weight measuring apparatus |
Dec. 27, 1994 |
| 5315117 |
Volume meter system |
May. 24, 1994 |
| 5300781 |
Non-hydrogenous process level measurement |
Apr. 5, 1994 |
| 5272349 |
Source handling apparatus |
Dec. 21, 1993 |
| 5218202 |
Method for automatic drift stabilization in radiation measurement with a detector |
Jun. 8, 1993 |
| 5136883 |
Liquid level gage system |
Aug. 11, 1992 |
| 5099124 |
Level detecting apparatus |
Mar. 24, 1992 |
| RE33857 |
Imaging of hot infrared emitting surfaces obscured by particulate fume and hot gases |
Mar. 24, 1992 |
| 5026993 |
Apparatus for monitoring settlement of a solid in a liquid, and a system incorporating same |
Jun. 25, 1991 |
| 5021665 |
Oil level monitor |
Jun. 4, 1991 |
| 4900928 |
Process and apparatus for determining quantity of radioactive material in a centrifuge |
Feb. 13, 1990 |
| 4870278 |
Wide-range fluid level detector |
Sep. 26, 1989 |
| 4833321 |
Process for installing a probe for monitoring the position of an interface between two fluids and means for implementing said process |
May. 23, 1989 |
| 4794256 |
Fast neutron process measurement system |
Dec. 27, 1988 |
| 4770047 |
Optical fiber sensor |
Sep. 13, 1988 |
| 4757201 |
Dosimeter for monitoring food irradiation |
Jul. 12, 1988 |
| 4755677 |
Tank content gauging system |
Jul. 5, 1988 |
| 4639349 |
Non-invasive liquid level and density gauge for nuclear power reactor pressure vessels |
Jan. 27, 1987 |
| 4591719 |
Apparatus for measuring the level of a liquid in an enclosure |
May. 27, 1986 |
| 4582992 |
Self-contained, on-line, real-time bulk material analyzer |
Apr. 15, 1986 |
| 4580052 |
Radioactive gauging source support, transport, and storage holder |
Apr. 1, 1986 |
| 4570718 |
Oil level sensor system and method for oil wells |
Feb. 18, 1986 |
| 4543237 |
Apparatus for continuously measuring acid gravity in a hydrocarbon-acid system |
Sep. 24, 1985 |
| 4539588 |
Imaging of hot infrared emitting surfaces obscured by particulate fume and hot gases |
Sep. 3, 1985 |
| 4520266 |
Radiation level detectors |
May. 28, 1985 |
| 4503330 |
Determining level or tilt angle of solids in a rotatable chamber |
Mar. 5, 1985 |
| 4499380 |
Apparatus and method for determining the hydrogen content of a substance |
Feb. 12, 1985 |
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