FR2383435B1 - - Google Patents
Info
- Publication number
- FR2383435B1 FR2383435B1 FR7806194A FR7806194A FR2383435B1 FR 2383435 B1 FR2383435 B1 FR 2383435B1 FR 7806194 A FR7806194 A FR 7806194A FR 7806194 A FR7806194 A FR 7806194A FR 2383435 B1 FR2383435 B1 FR 2383435B1
- Authority
- FR
- France
- 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
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
- G01F23/2927—Light, e.g. infrared or ultraviolet for discrete levels with light-conducting sensing elements, e.g. prisms using electrical detecting means for several discrete levels, e.g. with more than one light-conducting sensing element
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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH278877A CH614044A5 (US06229276-20010508-P00022.png) | 1977-03-07 | 1977-03-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2383435A1 FR2383435A1 (fr) | 1978-10-06 |
| FR2383435B1 true FR2383435B1 (US06229276-20010508-P00022.png) | 1983-06-10 |
Family
ID=4241602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7806194A Granted FR2383435A1 (fr) | 1977-03-07 | 1978-03-03 | Appareil electro-optique pour detecter la presence de liquide |
Country Status (6)
Families Citing this family (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5748477U (US06229276-20010508-P00022.png) * | 1980-09-03 | 1982-03-18 | ||
| JPS5839551U (ja) * | 1981-09-10 | 1983-03-15 | 東北リコ−株式会社 | 屈折率測定装置 |
| DE3515767A1 (de) * | 1985-05-02 | 1986-11-06 | Alfred Teves Gmbh, 6000 Frankfurt | Vorrichtung zur ermittlung und ueberwachung der beschaffenheit, des zustands und des fuellstands einer druckfluessigkeit |
| US4764671A (en) * | 1986-10-03 | 1988-08-16 | Kollmorgen Corporation | Fiber optic fluid sensor using coated sensor tip |
| JPS63124648U (US06229276-20010508-P00022.png) * | 1987-02-06 | 1988-08-15 | ||
| US4813422A (en) * | 1987-03-06 | 1989-03-21 | Healthcare Technological Resources, Inc. | Bowel control probe and method for controlling bowel incontinence |
| US4904878A (en) * | 1988-08-12 | 1990-02-27 | Caterpillar Inc. | Multi-point refractive liquid level sensor |
| US5015092A (en) * | 1989-05-05 | 1991-05-14 | Spectra-Tech, Inc. | Sampling probe for optical analyzation of a sample |
| DE4028883A1 (de) * | 1990-09-12 | 1992-03-19 | Rheinhuette Gmbh & Co | Verfahren und einrichtung zur anzeige eines ungewoehnlichen betriebszustandes einer maschine oder betriebseinrichtung, insbesondere leckanzeige bzw. leckmelder |
| JPH0579378U (ja) * | 1992-03-26 | 1993-10-29 | 三菱電機株式会社 | 冷蔵庫の中仕切 |
| US5279157A (en) * | 1992-08-03 | 1994-01-18 | Casco Products Corporation | Liquid level monitor |
| US5534708A (en) * | 1993-12-15 | 1996-07-09 | Simmonds Precision Products Inc. | Optical fuel/air/water sensor and detector circuit |
| EP0795740A1 (en) * | 1996-03-13 | 1997-09-17 | Simmonds Precision Products Inc. | Self testing optical liquid level sensor |
| US5831268A (en) * | 1996-11-25 | 1998-11-03 | Morita; Yoshimitsu | Sensing device for reflective clear material using infrared LED |
| US6668645B1 (en) | 2002-06-18 | 2003-12-30 | Ti Group Automotive Systems, L.L.C. | Optical fuel level sensor |
| JP5274217B2 (ja) * | 2008-11-27 | 2013-08-28 | 中国電力株式会社 | 弱点ピン用折損検出装置 |
| US20130140463A1 (en) * | 2010-05-04 | 2013-06-06 | Michael L. Myrick | Detecting heat capacity changes due to surface inconsistencies using high absorbance spectral regions in the mid-ir |
| US20130140462A1 (en) * | 2010-05-04 | 2013-06-06 | Michael L. Myrick | Detecting surface stains using high absorbance spectral regions in the mid-ir |
| KR101951971B1 (ko) | 2011-06-07 | 2019-02-25 | 메저먼트 스페셜티스, 인크. | 유체 센싱을 위한 광학 센싱 장치 및 그 방법 |
| US10041866B2 (en) | 2015-04-24 | 2018-08-07 | University Of South Carolina | Reproducible sample preparation method for quantitative stain detection |
| US9885147B2 (en) | 2015-04-24 | 2018-02-06 | University Of South Carolina | Reproducible sample preparation method for quantitative stain detection |
| JP6603530B2 (ja) * | 2015-09-29 | 2019-11-06 | 東京エレクトロン株式会社 | プラズマ処理装置、及び、プラズマ処理装置の制御方法 |
| US10175167B2 (en) * | 2017-03-28 | 2019-01-08 | Te Connectivity Corporation | Optical sensor for detecting accumulation of a material |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1198474A (en) * | 1967-04-08 | 1970-07-15 | Valor Co Ltd | Improvements in Liquid Level Indicators |
| US3568628A (en) * | 1968-12-09 | 1971-03-09 | Illinois Tool Works | Liquid level indicator |
| CH512060A (de) * | 1969-05-27 | 1971-08-31 | Ingenieur Buero Aquasant | Optisch-elektrisches Gerät für den Nachweis des Vorhandenseins von Flüssigkeit |
| US3683196A (en) * | 1970-11-27 | 1972-08-08 | Texas Instruments Inc | Differential fluid level detector |
| US3818470A (en) * | 1970-11-27 | 1974-06-18 | Texas Instruments Inc | Fluid level detector |
| US3834235A (en) * | 1971-12-17 | 1974-09-10 | M Bouton | Liquid and solid sensing device |
| US3766395A (en) * | 1971-12-27 | 1973-10-16 | Texas Instruments Inc | Fluid level detection system |
| US3844171A (en) * | 1971-12-29 | 1974-10-29 | E Rodger | Light guide liquid level indicator |
| CH556529A (de) * | 1972-09-21 | 1974-11-29 | Perren Benno | Optisch-elektrisches geraet fuer den nachweis des vorhandenseins von fluessigkeit. |
| US3851181A (en) * | 1973-11-07 | 1974-11-26 | Audronics Inc | Blood level detector |
| US3908129A (en) * | 1974-04-08 | 1975-09-23 | Datagage Systems Inc | Manometer level detector |
| DE2505485A1 (de) * | 1975-02-10 | 1976-08-19 | Helmut Dipl Chem Ulrich | Fuellstandsanzeiger oder zustandsdetektor |
| CH580802A5 (US06229276-20010508-P00022.png) * | 1975-07-21 | 1976-10-15 | Hectronic Ag | |
| US3995169A (en) * | 1975-09-17 | 1976-11-30 | Oddon Louis D | Optical liquid level gauge |
-
1977
- 1977-03-07 CH CH278877A patent/CH614044A5/xx not_active IP Right Cessation
- 1977-05-27 DE DE2724039A patent/DE2724039C2/de not_active Expired
-
1978
- 1978-02-27 US US05/881,799 patent/US4201914A/en not_active Expired - Lifetime
- 1978-03-03 FR FR7806194A patent/FR2383435A1/fr active Granted
- 1978-03-03 JP JP2440578A patent/JPS53131071A/ja active Pending
- 1978-03-03 GB GB8567/78A patent/GB1600101A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2383435A1 (fr) | 1978-10-06 |
| GB1600101A (en) | 1981-10-14 |
| DE2724039C2 (de) | 1981-10-15 |
| JPS53131071A (en) | 1978-11-15 |
| US4201914A (en) | 1980-05-06 |
| CH614044A5 (US06229276-20010508-P00022.png) | 1979-10-31 |
| DE2724039A1 (de) | 1978-09-14 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |