GB917988A - Method and means for determining the level of a liquid in a container - Google Patents

Method and means for determining the level of a liquid in a container

Info

Publication number
GB917988A
GB917988A GB4423160A GB4423160A GB917988A GB 917988 A GB917988 A GB 917988A GB 4423160 A GB4423160 A GB 4423160A GB 4423160 A GB4423160 A GB 4423160A GB 917988 A GB917988 A GB 917988A
Authority
GB
United Kingdom
Prior art keywords
infra
head
container
liquid
vertical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB4423160A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB4423160A priority Critical patent/GB917988A/en
Publication of GB917988A publication Critical patent/GB917988A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/284—Electromagnetic waves
    • G01F23/292—Light, e.g. infrared or ultraviolet

Abstract

917,988. Determination of liquid levels by infra-red detectors. HAIM, G. (Smith, M. F.). Nov. 27, 1961 [Dec. 23, 1960], No. 44231/60. Class 40 (3). The level of liquid in a container is determined by measuring the infra-red radiation emitted from vertical points on the outer surface of the container by means of an infra-red radiation detector remote from the container and recording the point at which the radiation emitted by the container appears to change. In the embodiment shown, three tanks 5, 12, 18 of a total of twenty each having a vertical line of black paint interrupted by reflecting horizontal aluminium strips, are monitored by one infra-red radiation pyrometer head 21 secured to a gimbal mount table rotatable by an azimuth servomotor 23 through worm-gear 24. Vertical movement of the head 21 is effected by an elevation servomotor 25 acting through a pinion and toothed gear 26. The motors 23, 25 are controlled by programme devices 28, 27, respectively, in connection with a timer 29. The head is further connected to a chart recorder 30. Under the control of the timer 29 and the programme device 28 the head 21 is positioned so as to monitor a particular tank (as shown, tank 12). In this position and under the control of the programme device 27 the head scans the vertical black line producing a graph at the recorder which shows a change in infra-red emission from the black line corresponding to the level of the liquid. Blips on the graph produced by the positions where the reflecting lines intersect the black line indicate the point on the tank where the emissivity changes. A closed circuit television arrangement may be used as a sighting device for adjusting the position of the detector.
GB4423160A 1960-12-23 1960-12-23 Method and means for determining the level of a liquid in a container Expired GB917988A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4423160A GB917988A (en) 1960-12-23 1960-12-23 Method and means for determining the level of a liquid in a container

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4423160A GB917988A (en) 1960-12-23 1960-12-23 Method and means for determining the level of a liquid in a container

Publications (1)

Publication Number Publication Date
GB917988A true GB917988A (en) 1963-02-13

Family

ID=10432368

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4423160A Expired GB917988A (en) 1960-12-23 1960-12-23 Method and means for determining the level of a liquid in a container

Country Status (1)

Country Link
GB (1) GB917988A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2860573A1 (en) * 2003-10-03 2005-04-08 Siraga Sa METHOD AND DEVICE FOR DETECTING THE SEPARATION LEVEL OF LIQUID AND GAS PHASES IN A METAL TANK
US7358860B2 (en) 2005-03-31 2008-04-15 American Air Liquide, Inc. Method and apparatus to monitor and detect cryogenic liquefied gas leaks

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2860573A1 (en) * 2003-10-03 2005-04-08 Siraga Sa METHOD AND DEVICE FOR DETECTING THE SEPARATION LEVEL OF LIQUID AND GAS PHASES IN A METAL TANK
WO2005033576A1 (en) * 2003-10-03 2005-04-14 Siraga S.A. Method and device for detecting the level at which liquid and gas phases are separate in a metallic reservoir
US7358860B2 (en) 2005-03-31 2008-04-15 American Air Liquide, Inc. Method and apparatus to monitor and detect cryogenic liquefied gas leaks

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