FR2205669A1 - - Google Patents
Info
- Publication number
- FR2205669A1 FR2205669A1 FR7339117A FR7339117A FR2205669A1 FR 2205669 A1 FR2205669 A1 FR 2205669A1 FR 7339117 A FR7339117 A FR 7339117A FR 7339117 A FR7339117 A FR 7339117A FR 2205669 A1 FR2205669 A1 FR 2205669A1
- 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.)
- Granted
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
- G01F23/26—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 variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
- G01F23/263—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 variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors
- G01F23/266—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 variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors measuring circuits therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
- G01R27/2605—Measuring capacitance
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Fluid Mechanics (AREA)
- Thermal Sciences (AREA)
- Electromagnetism (AREA)
- Measurement Of Resistance Or Impedance (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Electronic Switches (AREA)
- Amplifiers (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US30358772 US3811051A (en) | 1972-11-03 | 1972-11-03 | Capacitance responsive detector system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2205669A1 true FR2205669A1 (US20090163788A1-20090625-C00002.png) | 1974-05-31 |
| FR2205669B1 FR2205669B1 (US20090163788A1-20090625-C00002.png) | 1977-05-27 |
Family
ID=23172775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7339117A Expired FR2205669B1 (US20090163788A1-20090625-C00002.png) | 1972-11-03 | 1973-11-02 |
Country Status (9)
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2373038A1 (fr) * | 1976-12-03 | 1978-06-30 | Robertshaw Controls Co | Emetteur a capacite, a deux fils |
| FR2454617A1 (fr) * | 1979-04-19 | 1980-11-14 | Motorola Inc | Appareil pour creer une tension inversement proportionnelle a la capacite d'un condensateur variable |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4091683A (en) * | 1976-09-27 | 1978-05-30 | Panex, Inc. | Single channel electrical comparative measuring system |
| US4145927A (en) * | 1977-11-10 | 1979-03-27 | Larson Roger G | Apparatus for determining the liquid level in a tank |
| US4194195A (en) * | 1978-02-27 | 1980-03-18 | Robertshaw Controls Company | Portable liquid level maintenance monitor system for vehicles |
| US4302965A (en) * | 1979-06-29 | 1981-12-01 | Phillips Petroleum Company | Viscometer |
| JPS59184778U (ja) * | 1983-05-25 | 1984-12-08 | フイリツプス工業振興株式会社 | 自動動作電気ひげそり器 |
| US4678403A (en) * | 1985-08-01 | 1987-07-07 | Rudy Richard M | Liquid level sensor for controlling pump operation |
| DE3908590A1 (de) * | 1989-03-16 | 1990-09-20 | Hella Kg Hueck & Co | Einrichtung zur messung, ueberwachung und auswertung elektrostatischer parameter bei der auf- und/oder entladung von koerpern |
| US5469364A (en) * | 1993-03-15 | 1995-11-21 | Hughey; Bradley W. | Apparatus and methods for measuring and detecting variations in the value of a capacitor |
| US5446444A (en) * | 1993-12-17 | 1995-08-29 | Robertshaw Controls Company | Capacitive threshold detector test circuit |
| US5506564A (en) * | 1994-02-01 | 1996-04-09 | Hargest; Thomas S. | Marine craft fuel alert system |
| US5866797A (en) * | 1996-12-31 | 1999-02-02 | Stmicroelectronics, Inc. | Liquid level gauge interface system having dynamic offset |
| US5887479A (en) * | 1996-12-31 | 1999-03-30 | Stmicroelectronics, Inc. | Liquid-level gauge driver circuit |
| US6942155B1 (en) * | 2001-05-31 | 2005-09-13 | Alien Technology Corporation | Integrated circuits with persistent data storage |
| US7377445B1 (en) | 2001-05-31 | 2008-05-27 | Alien Technology Corporation | Integrated circuits with persistent data storage |
| CN115629283B (zh) * | 2022-08-18 | 2024-05-10 | 北京芯可鉴科技有限公司 | 用于对电路中的组成部件进行测评的方法和装置及电路 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1234467A (US20090163788A1-20090625-C00002.png) * | 1968-08-28 | 1971-06-03 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3199350A (en) * | 1961-11-27 | 1965-08-10 | Gen Motors Corp | Capacitance type fuel gage |
| US3254333A (en) * | 1963-01-14 | 1966-05-31 | Baumoel Joseph | Liquid condition and level detector |
| US3291149A (en) * | 1964-08-31 | 1966-12-13 | Tung Sol Electric Inc | Liquid level detector |
| US3543046A (en) * | 1969-04-14 | 1970-11-24 | Fisher Governor Co | Capacitance-measuring techniques |
-
1972
- 1972-11-03 US US30358772 patent/US3811051A/en not_active Expired - Lifetime
-
1973
- 1973-10-30 SE SE7314733A patent/SE401735B/xx unknown
- 1973-11-02 JP JP48123933A patent/JPS5846685B2/ja not_active Expired
- 1973-11-02 FR FR7339117A patent/FR2205669B1/fr not_active Expired
- 1973-11-02 NL NL7315052A patent/NL7315052A/xx not_active Application Discontinuation
- 1973-11-02 DE DE2354839A patent/DE2354839C2/de not_active Expired
- 1973-11-02 GB GB5107373A patent/GB1425599A/en not_active Expired
- 1973-11-02 IT IT3087673A patent/IT999189B/it active
- 1973-11-02 CA CA184,920A patent/CA1010525A/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1234467A (US20090163788A1-20090625-C00002.png) * | 1968-08-28 | 1971-06-03 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2373038A1 (fr) * | 1976-12-03 | 1978-06-30 | Robertshaw Controls Co | Emetteur a capacite, a deux fils |
| FR2454617A1 (fr) * | 1979-04-19 | 1980-11-14 | Motorola Inc | Appareil pour creer une tension inversement proportionnelle a la capacite d'un condensateur variable |
Also Published As
| Publication number | Publication date |
|---|---|
| SE401735B (sv) | 1978-05-22 |
| IT999189B (it) | 1976-02-20 |
| NL7315052A (US20090163788A1-20090625-C00002.png) | 1974-05-07 |
| GB1425599A (en) | 1976-02-18 |
| JPS5846685B2 (ja) | 1983-10-18 |
| JPS4978186A (US20090163788A1-20090625-C00002.png) | 1974-07-27 |
| CA1010525A (en) | 1977-05-17 |
| FR2205669B1 (US20090163788A1-20090625-C00002.png) | 1977-05-27 |
| US3811051A (en) | 1974-05-14 |
| DE2354839C2 (de) | 1984-01-05 |
| AU6214073A (en) | 1975-05-08 |
| DE2354839A1 (de) | 1974-05-09 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |