CA1256301A - Indicateur de niveau de matiere du type a capacite - Google Patents
Indicateur de niveau de matiere du type a capaciteInfo
- Publication number
- CA1256301A CA1256301A CA000489039A CA489039A CA1256301A CA 1256301 A CA1256301 A CA 1256301A CA 000489039 A CA000489039 A CA 000489039A CA 489039 A CA489039 A CA 489039A CA 1256301 A CA1256301 A CA 1256301A
- Authority
- CA
- Canada
- Prior art keywords
- probe
- capacitance
- responsive
- indicating
- calibration
- Prior art date
- 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
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US66675784A | 1984-10-31 | 1984-10-31 | |
US666,757 | 1991-03-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA1256301A true CA1256301A (fr) | 1989-06-27 |
Family
ID=24675333
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA000489039A Expired CA1256301A (fr) | 1984-10-31 | 1985-08-20 | Indicateur de niveau de matiere du type a capacite |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA1256301A (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5672975A (en) * | 1995-06-07 | 1997-09-30 | Rosemount Inc. | Two-wire level transmitter |
US5847567A (en) * | 1994-09-30 | 1998-12-08 | Rosemount Inc. | Microwave level gauge with remote transducer |
US6539794B1 (en) | 1994-02-18 | 2003-04-01 | Johanngeorg Otto | Arrangement for measuring the level of contents in a container |
-
1985
- 1985-08-20 CA CA000489039A patent/CA1256301A/fr not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6539794B1 (en) | 1994-02-18 | 2003-04-01 | Johanngeorg Otto | Arrangement for measuring the level of contents in a container |
US5847567A (en) * | 1994-09-30 | 1998-12-08 | Rosemount Inc. | Microwave level gauge with remote transducer |
US5672975A (en) * | 1995-06-07 | 1997-09-30 | Rosemount Inc. | Two-wire level transmitter |
US6373261B1 (en) | 1995-06-07 | 2002-04-16 | Rosemount Inc. | Two-wire level transmitter |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4499766A (en) | Capacitance-type material level indicator | |
US4555941A (en) | Capacitance-type material level indicator | |
US4800755A (en) | Capacitance-type material level indicator | |
US4676100A (en) | Capacitance-type material level indicator | |
US5245873A (en) | Capacitance-type material level indicator and method of operation | |
EP0101580B1 (fr) | Indicateur capacitif de niveau de matière | |
US4499640A (en) | Method of manufacturing capacitance-type material level indicator probe | |
US4499767A (en) | Capacitance-type material level indicator | |
US4470008A (en) | Capacitance sensor | |
US5424649A (en) | Soil moisture sensor | |
US3391547A (en) | Capacitive liquid level sensor using phase sensitive detector means | |
US4169543A (en) | Amplitude responsive detector | |
JP4208572B2 (ja) | 水準を計測するための方法および装置 | |
US4347741A (en) | Control system for a capacitive level sensor | |
US7421896B2 (en) | Variable frequency charge pump in capacitive level sensor | |
US4188826A (en) | Device for measuring the liquid level of an electrically conductive liquid | |
US4170311A (en) | Level measuring system | |
US4624139A (en) | Capacitance-type material level indicator | |
US5083470A (en) | Capacitive liquid level sensor | |
CA1278065C (fr) | Senseur diviseur inductif | |
US4226118A (en) | Level detector | |
US5088325A (en) | System for indicating a condition of material | |
AU690918B2 (en) | Soil moisture sensor | |
US4232300A (en) | Level measuring system using admittance sensing | |
CA2505827A1 (fr) | Sonde sans contact pour mesure de la conductibilite de surface |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
MKEX | Expiry |