GB1387672A - Liquid level indicators - Google Patents

Liquid level indicators

Info

Publication number
GB1387672A
GB1387672A GB3668772A GB3668772A GB1387672A GB 1387672 A GB1387672 A GB 1387672A GB 3668772 A GB3668772 A GB 3668772A GB 3668772 A GB3668772 A GB 3668772A GB 1387672 A GB1387672 A GB 1387672A
Authority
GB
United Kingdom
Prior art keywords
rod
level
liquid
light
liquid level
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
GB3668772A
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
Publication of GB1387672A publication Critical patent/GB1387672A/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
    • G01F23/2921—Light, e.g. infrared or ultraviolet for discrete levels
    • G01F23/2922—Light, e.g. infrared or ultraviolet for discrete levels with light-conducting sensing elements, e.g. prisms
    • G01F23/2925—Light, e.g. infrared or ultraviolet for discrete levels with light-conducting sensing elements, e.g. prisms using electrical detecting means
    • 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
    • G01F23/2921—Light, e.g. infrared or ultraviolet for discrete levels
    • G01F23/2922—Light, e.g. infrared or ultraviolet for discrete levels with light-conducting sensing elements, e.g. prisms
    • G01F23/2924—Light, e.g. infrared or ultraviolet for discrete levels with light-conducting sensing elements, e.g. prisms for several discrete levels, e.g. with more than one light-conducting sensing element

Abstract

1387672 Liquid level indication H ULRICH 7 Aug 1972 [9 Aug 1971] 36687/72 Heading G1H In a liquid level indicator the arrangement is such that a light conducting rod 5, mounted on the wall of a liquid container, has a light directed on the rod 5 so that a light detector 14 detects when the liquor level is below a.predetermined level when the internal light reflection ocurrs in the rod and when the liquid is above the level when total internal reflection does not occur, and the tip 8 of the rod 5 is shaped so that its axial cross-section has a radius of curvature that continuously decreases towards the tip. In a further embodiment, Fig. 7 (not shown), the indicator may be moved vertically to scan the liquid to find the level. The rod 5 may be clamped at the nodal point so that vibration of the rod 5 will cause impurities to be removed therefrom. The rod 5 may also be provided with a plurality of tips, Fig. 2 (not shown).
GB3668772A 1971-08-09 1972-08-07 Liquid level indicators Expired GB1387672A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712139865 DE2139865B2 (en) 1971-08-09 1971-08-09 LEVEL INDICATOR OR CONDITION DETECTOR WITH A LIGHT GUIDING ROD PASSED THROUGH A PARTITION WALL

Publications (1)

Publication Number Publication Date
GB1387672A true GB1387672A (en) 1975-03-19

Family

ID=5816253

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3668772A Expired GB1387672A (en) 1971-08-09 1972-08-07 Liquid level indicators

Country Status (6)

Country Link
BE (1) BE787319A (en)
CH (1) CH567714A5 (en)
DE (1) DE2139865B2 (en)
FR (1) FR2148650B1 (en)
GB (1) GB1387672A (en)
NL (1) NL7210710A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2269455A (en) * 1992-08-03 1994-02-09 Casco Products Corp Liquid level monitor.

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU524951B2 (en) * 1978-04-19 1982-10-14 See Probe Electronics Pty. Ltd. L.e.d. reflectance fluid level indicator
DE8218877U1 (en) * 1982-07-01 1982-10-07 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart FACILITIES, IN PARTICULAR ON DISHWASHER, ZURNIVEAURE REGULATION
FR2531530B1 (en) * 1982-08-06 1988-05-27 Fayollet Roland DEVICE FOR THE OPTICAL DETECTION OF A LIQUID LEVEL
DE3423580A1 (en) * 1984-06-27 1986-01-02 Degussa Ag, 6000 Frankfurt METHOD FOR TREATING FLUIDIZED SOOT WITH GASES, FLUID BED APPARATUS FOR CARRYING OUT THE METHOD AND LIMIT VALUES USED IN THE APPARATUS
DE3526266A1 (en) * 1985-07-23 1987-02-05 Fraunhofer Ges Forschung Optical level sensor
DE3617717C2 (en) * 1986-05-27 1995-08-17 Siemens Ag Fiber optic level sensor
DE102014209734A1 (en) * 2014-05-22 2015-11-26 BSH Hausgeräte GmbH Dryers with internal cleaning of a water level sensor and method for its operation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2269455A (en) * 1992-08-03 1994-02-09 Casco Products Corp Liquid level monitor.
GB2269455B (en) * 1992-08-03 1995-06-14 Casco Products Corp Liquid level monitor

Also Published As

Publication number Publication date
DE2139865A1 (en) 1973-02-15
FR2148650A1 (en) 1973-03-23
FR2148650B1 (en) 1976-03-12
CH567714A5 (en) 1975-10-15
NL7210710A (en) 1973-02-13
BE787319A (en) 1972-12-01
DE2139865B2 (en) 1976-12-02

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee