GB980064A - Capacitance type fluid measuring apparatus - Google Patents
Capacitance type fluid measuring apparatusInfo
- Publication number
- GB980064A GB980064A GB1478261A GB1478261A GB980064A GB 980064 A GB980064 A GB 980064A GB 1478261 A GB1478261 A GB 1478261A GB 1478261 A GB1478261 A GB 1478261A GB 980064 A GB980064 A GB 980064A
- Authority
- GB
- United Kingdom
- Prior art keywords
- capacitor
- mass
- current
- fluid
- capacitance type
- 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
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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
980,064. Determining the mass of liquid in a container. SIMMONDS PRECISION PRODUCTS Inc. April 24, 1961, No. 14782/61. Heading G1N. In a capacitance type fluid measuring apparatus for indicating the mass in a tank of a fluid having a relationship between its dielectric constant (K) and density (D) defined by the equation K-1= (bD)<SP>n</SP> where b and n are constants with n other than 0 or 1, the current through the measuring capacitor Ct Fig. 2 is balanced by the current through a fixed capacitor Ce equal to that through the total dry capacitance of the measuring capacitor and the current through a variable capacitor Cr which is adjusted by means 42 responsive to unbalance, an indication proportional to the n th root of the balancing adjustment being given by the balancing means in an indicator 44 to indicate the mass of fluid in the container. A mathematical analysis is given together with approximate values for b and n. The nth root may be the result of a non-linear scale or a non-linear potentiometer 32, and the electrodes of the measuring capacitor may have a width A<SP>1</SP> at any height H defined by the equation A<SP>1</SP>α (d|f(H)|<SP>n</SP>/dH). A plate shape is exemplified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1478261A GB980064A (en) | 1961-04-24 | 1961-04-24 | Capacitance type fluid measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1478261A GB980064A (en) | 1961-04-24 | 1961-04-24 | Capacitance type fluid measuring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB980064A true GB980064A (en) | 1965-01-13 |
Family
ID=10047402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1478261A Expired GB980064A (en) | 1961-04-24 | 1961-04-24 | Capacitance type fluid measuring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB980064A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4646569A (en) * | 1984-05-16 | 1987-03-03 | Schlumberger Electronics (U.K.) Limited | Fluid level measurement system |
-
1961
- 1961-04-24 GB GB1478261A patent/GB980064A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4646569A (en) * | 1984-05-16 | 1987-03-03 | Schlumberger Electronics (U.K.) Limited | Fluid level measurement system |
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