CA1084117A - Rf admittance measuring method and apparatus for determining the level of a conductive liquid - Google Patents
Rf admittance measuring method and apparatus for determining the level of a conductive liquidInfo
- Publication number
- CA1084117A CA1084117A CA241,560A CA241560A CA1084117A CA 1084117 A CA1084117 A CA 1084117A CA 241560 A CA241560 A CA 241560A CA 1084117 A CA1084117 A CA 1084117A
- Authority
- CA
- Canada
- Prior art keywords
- probe
- electrode
- conductive
- guard
- insulation
- 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
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- 150000002148 esters Chemical class 0.000 description 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 1
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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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/002—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow wherein the flow is in an open channel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/685—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks by laminating inserts between two plastic films or plates
- B29C70/687—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks by laminating inserts between two plastic films or plates the inserts being oriented, e.g. nets or meshes
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Measuring Volume Flow (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/532,208 US4064753A (en) | 1974-12-12 | 1974-12-12 | RF admittance measuring method and apparatus for determining the level of a conductive liquid |
| US532,208 | 1974-12-12 | ||
| US63559575A | 1975-11-28 | 1975-11-28 | |
| US635,595 | 1975-11-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1084117A true CA1084117A (en) | 1980-08-19 |
Family
ID=27063777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA241,560A Expired CA1084117A (en) | 1974-12-12 | 1975-12-11 | Rf admittance measuring method and apparatus for determining the level of a conductive liquid |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS5185759A (enrdf_load_stackoverflow) |
| CA (1) | CA1084117A (enrdf_load_stackoverflow) |
| DE (2) | DE2560645C2 (enrdf_load_stackoverflow) |
| GB (3) | GB1545200A (enrdf_load_stackoverflow) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5337555U (enrdf_load_stackoverflow) * | 1976-09-07 | 1978-04-01 | ||
| JPH02109220U (enrdf_load_stackoverflow) * | 1989-02-17 | 1990-08-31 | ||
| DE8902858U1 (de) * | 1989-03-06 | 1989-04-20 | Berliner Wasser-Betriebe Eigenbetrieb von Berlin, 1000 Berlin | Pegelmarke |
| DE4025400C1 (enrdf_load_stackoverflow) * | 1990-08-10 | 1992-04-09 | Vega Grieshaber Gmbh & Co, 7620 Wolfach, De | |
| DE10210504A1 (de) * | 2002-03-11 | 2003-09-25 | Endress & Hauser Gmbh & Co Kg | Feldgerätelektronik für konduktive Grenzstandschalter |
| DE202007019018U1 (de) * | 2007-06-05 | 2010-05-12 | Griebel, Herbert | Sensor und damit ausgestatteter Abscheidebehälter |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2852937A (en) * | 1955-04-07 | 1958-09-23 | Honeywell Regulator Co | Liquid level indicating apparatus |
| GB941645A (en) * | 1961-03-28 | 1963-11-13 | Dag Schreiber | Improvements in or relating to flow measurement devices |
| US3324647A (en) * | 1964-08-11 | 1967-06-13 | Parmet Company | Proximity detector |
| US3706980A (en) * | 1970-04-27 | 1972-12-19 | Drexelbrook Controls | Rf system for measuring the level of materials |
| US3781672A (en) * | 1971-05-10 | 1973-12-25 | Drexelbrook Controls | Continuous condition measuring system |
| DE2151078C2 (de) * | 1971-10-13 | 1973-11-08 | Endress U. Hauser Gmbh U. Co, 7867 Maulburg | Kapazitives Fullstandsmeßgerat |
| US3729994A (en) * | 1972-02-07 | 1973-05-01 | H Klug | Flow metering system for liquid wastes |
-
1975
- 1975-12-11 DE DE19752560645 patent/DE2560645C2/de not_active Expired
- 1975-12-11 CA CA241,560A patent/CA1084117A/en not_active Expired
- 1975-12-11 DE DE19752555817 patent/DE2555817C2/de not_active Expired
- 1975-12-12 GB GB3338378A patent/GB1545200A/en not_active Expired
- 1975-12-12 JP JP50149038A patent/JPS5185759A/ja active Pending
- 1975-12-12 GB GB5105775A patent/GB1545198A/en not_active Expired
- 1975-12-12 GB GB3338278A patent/GB1545199A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2555817A1 (de) | 1976-06-24 |
| GB1545200A (en) | 1979-05-02 |
| DE2555817C2 (de) | 1986-04-17 |
| DE2560645C2 (de) | 1987-01-15 |
| JPS5185759A (enrdf_load_stackoverflow) | 1976-07-27 |
| GB1545198A (en) | 1979-05-02 |
| GB1545199A (en) | 1979-05-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |