GB1472185A - Liquid detectors - Google Patents

Liquid detectors

Info

Publication number
GB1472185A
GB1472185A GB2251274A GB2251274A GB1472185A GB 1472185 A GB1472185 A GB 1472185A GB 2251274 A GB2251274 A GB 2251274A GB 2251274 A GB2251274 A GB 2251274A GB 1472185 A GB1472185 A GB 1472185A
Authority
GB
United Kingdom
Prior art keywords
detector
light
liquid
source
pervious
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
GB2251274A
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.)
Hectronic AG
Original Assignee
Hectronic AG
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 Hectronic AG filed Critical Hectronic AG
Publication of GB1472185A publication Critical patent/GB1472185A/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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)

Abstract

1472185 Liquid detector; bubble density measurement HECTRONIC AG 21 May 1974 [22 May 1973] 22512/74 Heading G1A Apparatus for detecting the presence of a liquid medium comprises a light source 4, a photoelectric detector 14 and at least one member 3 pervious to light rays, the arrangement being such that, in the absence of liquid, light from the source reaches the detector via path 9 passing outside pervious member 3 and in the presence of liquid, light does not reach the detector (path 9a). Preferably the detector is also associated with a light pervious member 13. As described, source 4 is a LED and detector 14a phototransistor. The pervious member has a refractive index of about 1À5, may be inorganic or organic glass, (e.g. acrylic), and may be of spherical or cylindrical section. Opaque sheet 22 prevents direct transmission between source and detector. The system only operates correctly when the liquid is bubble free as bubbles reflect, refract or diffract light, that would otherwise miss the detector to the detector and produce output pulses. A rough measure of bubble concentration can be determined from the frequency of these pulses. In an alternative embodiment, the source is placed behind a block of the light pervious material in one face of the vessel for the liquid and the detector is placed behind a sheet of glass in an adjacent face.
GB2251274A 1973-05-22 1974-05-21 Liquid detectors Expired GB1472185A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT446073A AT324018B (en) 1973-05-22 1973-05-22 PROBE FOR DETERMINING GAS GASES IN A LIQUID

Publications (1)

Publication Number Publication Date
GB1472185A true GB1472185A (en) 1977-05-04

Family

ID=3564309

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2251274A Expired GB1472185A (en) 1973-05-22 1974-05-21 Liquid detectors

Country Status (7)

Country Link
AT (1) AT324018B (en)
BE (1) BE815349A (en)
CA (1) CA1010975A (en)
CH (1) CH567715A5 (en)
FR (1) FR2230996B1 (en)
GB (1) GB1472185A (en)
NL (1) NL7406910A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2185309A (en) * 1986-01-14 1987-07-15 Romotex Limited Gas bubble detector
CN111122817A (en) * 2019-12-30 2020-05-08 深圳开立生物医疗科技股份有限公司 Pipeline bubble monitoring method and device, storage medium and analysis equipment

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH580802A5 (en) * 1975-07-21 1976-10-15 Hectronic Ag
WO1985000301A1 (en) * 1983-07-01 1985-01-31 Baxter Travenol Laboratories, Inc. Wettable devices operational with aqueous liquids
DE3621009A1 (en) * 1986-06-23 1988-01-07 Truetzschler & Co DEVICE FOR DETECTING THE LEVEL IN A FIBER MATERIAL STORAGE, ESPECIALLY FOR SPINNING PREPARATION MACHINES

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE515938A (en) *
GB1051462A (en) * 1963-12-05 1966-12-14
US3548657A (en) * 1967-11-30 1970-12-22 Maria Panerai Device for an outside display of the level of a liquid contained within a tank

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2185309A (en) * 1986-01-14 1987-07-15 Romotex Limited Gas bubble detector
CN111122817A (en) * 2019-12-30 2020-05-08 深圳开立生物医疗科技股份有限公司 Pipeline bubble monitoring method and device, storage medium and analysis equipment

Also Published As

Publication number Publication date
BE815349A (en) 1974-09-16
FR2230996A1 (en) 1974-12-20
CA1010975A (en) 1977-05-24
DE2424387B2 (en) 1976-04-15
AT324018B (en) 1975-08-11
NL7406910A (en) 1974-11-26
CH567715A5 (en) 1975-10-15
FR2230996B1 (en) 1978-01-27
DE2424387A1 (en) 1974-12-19

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Legal Events

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