FR2500169B1 - - Google Patents
Info
- Publication number
- FR2500169B1 FR2500169B1 FR8201165A FR8201165A FR2500169B1 FR 2500169 B1 FR2500169 B1 FR 2500169B1 FR 8201165 A FR8201165 A FR 8201165A FR 8201165 A FR8201165 A FR 8201165A FR 2500169 B1 FR2500169 B1 FR 2500169B1
- 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
- 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
- G01R27/2617—Measuring dielectric properties, e.g. constants
- G01R27/2623—Measuring-systems or electronic circuits
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
- G01N27/221—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance by investigating the dielectric properties
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8105149 | 1981-02-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2500169A1 FR2500169A1 (fr) | 1982-08-20 |
| FR2500169B1 true FR2500169B1 (USRE038476-20040330-M00035.png) | 1985-01-11 |
Family
ID=10519801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8201165A Granted FR2500169A1 (fr) | 1981-02-18 | 1982-01-26 | Appareil servant a fournir une indication d'une variation de la constante dielectrique d'un fluide |
Country Status (6)
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60106170U (ja) * | 1983-12-23 | 1985-07-19 | 愛三工業株式会社 | 比誘電率変化検出装置 |
| US4621227A (en) * | 1984-02-29 | 1986-11-04 | Borg-Warner Corporation | Measuring system for determining the capacitance ratio of a pair of capacitors |
| US5230993A (en) * | 1987-06-05 | 1993-07-27 | Fuji Photo Film Co., Ltd. | Silver halide photographic element |
| JPH0522858Y2 (USRE038476-20040330-M00035.png) * | 1987-11-10 | 1993-06-11 | ||
| US4961055A (en) * | 1989-01-04 | 1990-10-02 | Vickers, Incorporated | Linear capacitance displacement transducer |
| US5021740A (en) * | 1989-03-07 | 1991-06-04 | The Boeing Company | Method and apparatus for measuring the distance between a body and a capacitance probe |
| US5648727A (en) * | 1995-10-24 | 1997-07-15 | Dpc Cirrus Inc. | Capacitive level sensing pipette probe |
| US5869973A (en) * | 1995-10-26 | 1999-02-09 | Nosov; Eugene I. | Time-domain dielectric spectroscopy method and apparatus |
| DE59814414D1 (de) * | 1997-12-18 | 2010-01-07 | Uster Technologies Ag | Verfahren und Vorrichtung zur Ermittlung von Anteilen fester Stoffe in einem Prüfgut |
| US6509745B1 (en) * | 2000-09-25 | 2003-01-21 | Detroit Diesel Corporation | Method and apparatus for measuring liquid dielectric behavior |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3067385A (en) * | 1959-08-24 | 1962-12-04 | Francis B Rykoskey | Oil monitor |
| FR2243624A5 (en) * | 1973-09-12 | 1975-04-04 | Sofrance | Detection of pollution in a fluid - partic an oil used in a machine tool, by measuring dielectric constant |
| GB1578527A (en) * | 1976-03-13 | 1980-11-05 | Lucas Industries Ltd | Apparatus for detecting water in oil |
| FR2386811A1 (fr) * | 1977-04-06 | 1978-11-03 | Elf Aquitaine | Detecteur de niveau de separation entre deux liquides |
-
1981
- 1981-11-05 US US06/318,433 patent/US4429272A/en not_active Expired - Lifetime
- 1981-11-18 JP JP56183920A patent/JPS57139668A/ja active Pending
- 1981-11-20 ES ES507358A patent/ES507358A0/es active Granted
- 1981-11-30 IT IT25360/81A patent/IT1142087B/it active
-
1982
- 1982-01-26 FR FR8201165A patent/FR2500169A1/fr active Granted
- 1982-02-18 MX MX191470A patent/MX150520A/es unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ES8302316A1 (es) | 1983-01-01 |
| FR2500169A1 (fr) | 1982-08-20 |
| JPS57139668A (en) | 1982-08-28 |
| IT8125360A0 (it) | 1981-11-30 |
| IT1142087B (it) | 1986-10-08 |
| US4429272A (en) | 1984-01-31 |
| MX150520A (es) | 1984-05-16 |
| ES507358A0 (es) | 1983-01-01 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |