CH620771A5 - - Google Patents
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- Publication number
- CH620771A5 CH620771A5 CH1216477A CH1216477A CH620771A5 CH 620771 A5 CH620771 A5 CH 620771A5 CH 1216477 A CH1216477 A CH 1216477A CH 1216477 A CH1216477 A CH 1216477A CH 620771 A5 CH620771 A5 CH 620771A5
- Authority
- CH
- Switzerland
- Prior art keywords
- luminous flux
- light
- light guide
- measurement
- sensor
- Prior art date
Links
- 230000004907 flux Effects 0.000 claims description 142
- 238000005259 measurement Methods 0.000 claims description 57
- 238000000034 method Methods 0.000 claims description 20
- 230000008859 change Effects 0.000 claims description 13
- 230000003287 optical effect Effects 0.000 claims description 13
- 230000000704 physical effect Effects 0.000 claims description 12
- 239000000126 substance Substances 0.000 claims description 9
- 230000000737 periodic effect Effects 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 4
- 239000004020 conductor Substances 0.000 claims description 4
- 230000002123 temporal effect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims 2
- 230000035945 sensitivity Effects 0.000 claims 1
- 238000004088 simulation Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 40
- 239000007788 liquid Substances 0.000 description 34
- 239000013307 optical fiber Substances 0.000 description 10
- 230000009467 reduction Effects 0.000 description 9
- 238000012544 monitoring process Methods 0.000 description 7
- 230000001681 protective effect Effects 0.000 description 7
- 239000013078 crystal Substances 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 239000003365 glass fiber Substances 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000003111 delayed effect Effects 0.000 description 3
- 230000003313 weakening effect Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 239000013543 active substance Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 description 1
- 229910002113 barium titanate Inorganic materials 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000005714 functional activity Effects 0.000 description 1
- 239000002223 garnet Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
-
- 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
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/10—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
- G01J1/16—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void using electric radiation detectors
- G01J1/1626—Arrangements with two photodetectors, the signals of which are compared
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S250/00—Radiant energy
- Y10S250/90—Optical liquid level sensors
- Y10S250/901—Optical liquid level sensors with gap between light guide elements, includes open light path preset
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S250/00—Radiant energy
- Y10S250/90—Optical liquid level sensors
- Y10S250/901—Optical liquid level sensors with gap between light guide elements, includes open light path preset
- Y10S250/902—Optical liquid level sensors with gap between light guide elements, includes open light path preset with closed light path preset
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S250/00—Radiant energy
- Y10S250/90—Optical liquid level sensors
- Y10S250/901—Optical liquid level sensors with gap between light guide elements, includes open light path preset
- Y10S250/902—Optical liquid level sensors with gap between light guide elements, includes open light path preset with closed light path preset
- Y10S250/903—Optical liquid level sensors with gap between light guide elements, includes open light path preset with closed light path preset with prism contacting liquid
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Priority Applications (11)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1216477A CH620771A5 (it) | 1977-10-05 | 1977-10-05 | |
ZA00785324A ZA785324B (en) | 1977-10-05 | 1978-03-19 | Method and apparatus for obtaining and transmitting signals which characterize a monitored physical property of a substance |
JP50001778A JPS54500013A (it) | 1977-10-05 | 1978-10-02 | |
DE78CH7800023T DE2857095D2 (en) | 1977-10-05 | 1978-10-02 | Indicator for a limit value and a measurement value |
NL7809941A NL7809941A (nl) | 1977-10-05 | 1978-10-02 | Werkwijze en inrichting voor het verkrijgen en het overdragen van signalen die een te controleren fysische eigenschap van een stof weerspiegelen. |
PCT/CH1978/000023 WO1979000180A1 (en) | 1977-10-05 | 1978-10-02 | Indicator for a limit value and a measurement value |
GB7920839A GB2023813A (en) | 1977-10-05 | 1978-10-02 | Method and apparatus for the automatic stabilisation of drift in radiation measurement |
FR7828431A FR2405463A1 (fr) | 1977-10-05 | 1978-10-04 | Procede et dispositif pour obtenir et transmettre des signaux propres a traduire une propriete physique d'un materiau |
IT7828444A IT1099237B (it) | 1977-10-05 | 1978-10-05 | Procedimento e dispositivo per ottenere e ritrasmettere segnali rispecchianti una caratteristica fisica da controllare in una sostanza |
US06/041,915 US4275295A (en) | 1977-10-05 | 1979-05-23 | Limit and measurement value transmitter |
SE7904846A SE7904846L (sv) | 1977-10-05 | 1979-06-01 | Grens- och metverdesgivare |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1216477A CH620771A5 (it) | 1977-10-05 | 1977-10-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH620771A5 true CH620771A5 (it) | 1980-12-15 |
Family
ID=4380479
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH1216477A CH620771A5 (it) | 1977-10-05 | 1977-10-05 |
Country Status (11)
Country | Link |
---|---|
US (1) | US4275295A (it) |
JP (1) | JPS54500013A (it) |
CH (1) | CH620771A5 (it) |
DE (1) | DE2857095D2 (it) |
FR (1) | FR2405463A1 (it) |
GB (1) | GB2023813A (it) |
IT (1) | IT1099237B (it) |
NL (1) | NL7809941A (it) |
SE (1) | SE7904846L (it) |
WO (1) | WO1979000180A1 (it) |
ZA (1) | ZA785324B (it) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE411955B (sv) * | 1978-06-02 | 1980-02-11 | Asea Ab | Fiberoptiskt metdon med hogst tva fibrer |
US4472628A (en) * | 1981-06-29 | 1984-09-18 | General Electric Company | Fiber optics transducers for sensing parameter magnitude |
EP0074788B1 (en) * | 1981-09-10 | 1989-05-31 | The Board Of Trustees Of The Leland Stanford Junior University | Fiber coupler temperature tranducer |
US4462699A (en) * | 1981-09-10 | 1984-07-31 | Board Of Trustees Of The Leland Stanford Junior University | Fiber coupler temperature transducer |
FR2514917A1 (fr) * | 1981-10-19 | 1983-04-22 | Seeb Sarl | Capteur de positionnement et de mouvement a fibres optiques |
GB2124757A (en) * | 1982-05-21 | 1984-02-22 | Marconi Avionics | Measuring displacements optically |
DE3234900A1 (de) * | 1982-09-21 | 1984-03-22 | Siemens Ag | Faseroptischer sensor |
DE3505810A1 (de) * | 1985-02-20 | 1986-08-21 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Anordnung zur ermittlung der verstellung bzw. einstellung eines weges oder winkels |
DE3629088C1 (en) * | 1986-08-27 | 1988-03-24 | Mueller Weingarten Maschf | Optoelectronic workpiece position monitoring in the work stations of a press |
EP0393144A4 (en) * | 1988-10-20 | 1992-08-12 | Conax Buffalo Corporation | Optical liquid level sensors |
US5017771A (en) * | 1989-11-20 | 1991-05-21 | The Boeing Company | Position sensor using optical fibers and a variable filter |
US5351547A (en) * | 1990-05-02 | 1994-10-04 | Dynisco, Inc. | Optical pressure transducer having a fixed reflector and a movable reflector attached to a diaphragm |
US5319978A (en) * | 1990-05-02 | 1994-06-14 | Dynisco, Inc. | Optical pressure transducer |
EP0533333A3 (en) * | 1991-09-19 | 1993-07-28 | Texaco Development Corporation | Optical photometry system |
US5376785A (en) * | 1992-10-02 | 1994-12-27 | Chin; Philip K. | Optical displacement sensor utilizing optical diffusion |
US7043984B2 (en) * | 2004-01-13 | 2006-05-16 | Fling John J | Automatically actuated liquid level sensor |
US7418861B2 (en) * | 2006-01-10 | 2008-09-02 | Fling John J | Mechanically self actuated liquid level sensor |
US7444865B2 (en) | 2006-05-04 | 2008-11-04 | Fling John J | Parallelogram actuated liquid level sensor |
JP5357218B2 (ja) * | 2011-07-14 | 2013-12-04 | キヤノンファインテック株式会社 | インク残量検出装置、インク残量検出方法およびインクジェット記録装置 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB925798A (en) * | 1960-08-30 | 1963-05-08 | Linotype Machinery Ltd | Light intensity comparator |
US3544799A (en) * | 1968-10-23 | 1970-12-01 | Gen Motors Corp | Photoelectric liquid level detector with checkout means which increases output of lamp to simulate low-level condition |
DE1817027B1 (de) * | 1968-12-24 | 1970-03-05 | Danfoss As | Fuellstandanzeiger |
FR2130819A5 (it) * | 1971-03-22 | 1972-11-10 | Snecma | |
DE2148696A1 (de) * | 1971-09-29 | 1973-04-05 | Krauss Maffei Ag | Optische einrichtung zum erzeugen eines von der eintauchtiefe eines beweglichen bauteiles in ein messlichtbuendel abhaengigen elektrischen signales |
CA1008146A (en) * | 1973-02-26 | 1977-04-05 | Andre Rekai | Optical self-checking level detector |
BE820108A (fr) * | 1973-11-27 | 1975-01-16 | Appareil pour determiner la transparence de l'atmospher | |
DE2448458A1 (de) * | 1974-10-11 | 1976-04-22 | Philips Patentverwaltung | Anordnung zur elektronischen eichkontrolle bei fotometrischen geraeten |
-
1977
- 1977-10-05 CH CH1216477A patent/CH620771A5/de not_active IP Right Cessation
-
1978
- 1978-03-19 ZA ZA00785324A patent/ZA785324B/xx unknown
- 1978-10-02 DE DE78CH7800023T patent/DE2857095D2/de not_active Expired
- 1978-10-02 GB GB7920839A patent/GB2023813A/en not_active Withdrawn
- 1978-10-02 NL NL7809941A patent/NL7809941A/xx not_active Application Discontinuation
- 1978-10-02 JP JP50001778A patent/JPS54500013A/ja active Pending
- 1978-10-02 WO PCT/CH1978/000023 patent/WO1979000180A1/de unknown
- 1978-10-04 FR FR7828431A patent/FR2405463A1/fr not_active Withdrawn
- 1978-10-05 IT IT7828444A patent/IT1099237B/it active
-
1979
- 1979-05-23 US US06/041,915 patent/US4275295A/en not_active Expired - Lifetime
- 1979-06-01 SE SE7904846A patent/SE7904846L/xx unknown
Also Published As
Publication number | Publication date |
---|---|
US4275295A (en) | 1981-06-23 |
SE7904846L (sv) | 1979-06-01 |
GB2023813A (en) | 1980-01-03 |
DE2857095D2 (en) | 1980-11-20 |
IT7828444A0 (it) | 1978-10-05 |
IT1099237B (it) | 1985-09-18 |
WO1979000180A1 (en) | 1979-04-19 |
ZA785324B (en) | 1979-09-26 |
FR2405463A1 (fr) | 1979-05-04 |
JPS54500013A (it) | 1979-08-23 |
NL7809941A (nl) | 1979-04-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PL | Patent ceased |