ZA796686B - Level measurement device - Google Patents
Level measurement deviceInfo
- Publication number
- ZA796686B ZA796686B ZA00796686A ZA796686A ZA796686B ZA 796686 B ZA796686 B ZA 796686B ZA 00796686 A ZA00796686 A ZA 00796686A ZA 796686 A ZA796686 A ZA 796686A ZA 796686 B ZA796686 B ZA 796686B
- Authority
- ZA
- South Africa
- Prior art keywords
- rays
- level
- responsive
- light source
- regulating means
- Prior art date
Links
- 238000005259 measurement Methods 0.000 title 1
- 230000003287 optical effect Effects 0.000 abstract 2
- 230000001105 regulatory effect Effects 0.000 abstract 2
- 239000000126 substance Substances 0.000 abstract 2
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
- 230000001988 toxicity Effects 0.000 abstract 1
- 231100000419 toxicity Toxicity 0.000 abstract 1
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
- G01F23/2928—Light, e.g. infrared or ultraviolet for discrete levels using light reflected on the material surface
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Paper (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Control Of Amplification And Gain Control (AREA)
- Continuous Casting (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Measurement Of Current Or Voltage (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT83526/78A IT1192344B (it) | 1978-12-20 | 1978-12-20 | Misuratore di livello |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA796686B true ZA796686B (en) | 1980-11-26 |
Family
ID=11322828
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA00796686A ZA796686B (en) | 1978-12-20 | 1979-12-10 | Level measurement device |
Country Status (8)
Country | Link |
---|---|
US (1) | US4365165A (xx) |
EP (1) | EP0014301B1 (xx) |
JP (1) | JPS55109925A (xx) |
AT (1) | ATE7078T1 (xx) |
DE (1) | DE2966898D1 (xx) |
ES (1) | ES487026A1 (xx) |
IT (1) | IT1192344B (xx) |
ZA (1) | ZA796686B (xx) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2931199A1 (de) * | 1979-08-01 | 1981-02-19 | Endress Hauser Gmbh Co | Anordnung zur messung des badspiegels in einer giessanlage, insbesondere in der kokille einer stranggiessanlage |
FR2482290A1 (fr) * | 1980-05-09 | 1981-11-13 | Poncet Pierre | Perfectionnements a la detection photoelectrique du niveau du bain dans les lingotieres de coulee continue |
EP0102390B1 (en) * | 1982-03-04 | 1987-06-16 | Kent Scientific and Industrial Projects Limited | Fluid level sensing apparatus |
GB8305531D0 (en) * | 1983-02-28 | 1983-03-30 | Shell Int Research | Optical tank gauging |
GB2147697B (en) * | 1983-10-05 | 1987-12-09 | Fraunhofer Ges Forschung | Level measurement method and apparatus |
DE3621009A1 (de) * | 1986-06-23 | 1988-01-07 | Truetzschler & Co | Vorrichtung zur erfassung des fuellstandes in einem fasermaterialspeicher, insbesondere fuer spinnereivorbereitungsmaschinen |
US5087635A (en) * | 1986-07-02 | 1992-02-11 | Rohm And Haas Company | Alpha-aryl-alpha-phenylethyl-1H-1,2,4-triazole-1-propanenitriles |
DE3828821A1 (de) * | 1988-08-25 | 1990-03-01 | Bayer Ag | Verfahren zur erkennung der ueberflutung einer oberflaeche |
CA1337955C (en) * | 1988-09-26 | 1996-01-23 | Thomas A. Almquist | Recoating of stereolithographic layers |
US4873863A (en) * | 1988-11-29 | 1989-10-17 | Bruhl J D | Volumetric leak detection means and method |
ES2077507B1 (es) * | 1993-10-04 | 1996-07-01 | Elapsa Sl | Sistema medidor de distancia con tecnologia laser para determinacion de niveles. |
DE4342272B4 (de) * | 1993-12-10 | 2004-01-29 | BSH Bosch und Siemens Hausgeräte GmbH | Verfahren und Meßanordnung zum Bestimmen des Niveaus, der Trübung und des Schaumanteils der Lauge in einer automatisch steuerbaren Wasch- oder Geschirrspülmaschine |
US5831268A (en) * | 1996-11-25 | 1998-11-03 | Morita; Yoshimitsu | Sensing device for reflective clear material using infrared LED |
US6259211B1 (en) * | 1998-08-05 | 2001-07-10 | Mars Incorporated | Vending machine fluorescent tube monitor |
WO2000066293A1 (fr) * | 1999-04-28 | 2000-11-09 | Sumitomo Metal Industries, Ltd. | Regulation du niveau de la surface du metal dans un moule en moulage continu |
DE19941430A1 (de) | 1999-08-30 | 2001-03-01 | Mueller Weingarten Maschf | Verfahren zur Regelung der Metalldosiermenge |
US6617601B1 (en) * | 2000-03-10 | 2003-09-09 | Lmi Technologies Inc. | Molten metal pouring control system and method |
JP4409979B2 (ja) | 2004-02-10 | 2010-02-03 | シチズンホールディングス株式会社 | 振動子 |
EP1641118B1 (en) | 2004-09-24 | 2010-04-21 | Seiko Epson Corporation | Piezoelectric resonator element and piezoelectric device |
CN101920334A (zh) * | 2010-08-25 | 2010-12-22 | 中南大学 | 一种采用红外线传感器检测铸模中熔体液位的方法 |
CN112666127A (zh) * | 2020-12-29 | 2021-04-16 | 湖南金泰环保科技有限公司 | 一种快速判断样品浓缩终点的方法及平行浓缩仪 |
CN113175972A (zh) * | 2021-04-09 | 2021-07-27 | 湖南考思特电子有限公司 | 一种液/料位指示、警示灯的控制系统 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3741656A (en) * | 1971-05-27 | 1973-06-26 | Bendix Corp | Fill level measuring device |
US3838727A (en) * | 1973-07-16 | 1974-10-01 | I Levi | Normalized optical input level control in continuous casting process and apparatus |
US3867628A (en) * | 1973-07-30 | 1975-02-18 | Scientific Technology | Pulsed light receiver and method |
-
1978
- 1978-12-20 IT IT83526/78A patent/IT1192344B/it active
-
1979
- 1979-12-10 ZA ZA00796686A patent/ZA796686B/xx unknown
- 1979-12-17 EP EP79830053A patent/EP0014301B1/en not_active Expired
- 1979-12-17 DE DE7979830053T patent/DE2966898D1/de not_active Expired
- 1979-12-17 AT AT79830053T patent/ATE7078T1/de active
- 1979-12-18 ES ES487026A patent/ES487026A1/es not_active Expired
- 1979-12-18 US US06/105,006 patent/US4365165A/en not_active Expired - Lifetime
- 1979-12-20 JP JP16487179A patent/JPS55109925A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
IT1192344B (it) | 1988-03-31 |
EP0014301B1 (en) | 1984-04-11 |
JPS55109925A (en) | 1980-08-23 |
US4365165A (en) | 1982-12-21 |
EP0014301A1 (en) | 1980-08-20 |
ES487026A1 (es) | 1980-08-01 |
IT7883526A0 (it) | 1978-12-20 |
ATE7078T1 (de) | 1984-04-15 |
DE2966898D1 (en) | 1984-05-17 |
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