GB2017915A - Liquid level indicators - Google Patents
Liquid level indicatorsInfo
- Publication number
- GB2017915A GB2017915A GB7909653A GB7909653A GB2017915A GB 2017915 A GB2017915 A GB 2017915A GB 7909653 A GB7909653 A GB 7909653A GB 7909653 A GB7909653 A GB 7909653A GB 2017915 A GB2017915 A GB 2017915A
- Authority
- GB
- United Kingdom
- Prior art keywords
- liquid level
- level indicators
- oscillator
- delay time
- counter
- 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.)
- Withdrawn
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
- G01F23/28—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 the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/296—Acoustic waves
- G01F23/2962—Measuring transit time of reflected waves
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
A liquid level indicator, for example a tide gauge, uses a pulsed sonar transmitter 1 and receiver 3, the delay time between transmitting a pulse and receiving its echo reflected from the surface of the liquid is measured by an oscillator 9 which feeds a counter 8. The count in the counter during the delay time is displayed. Oscillator 9 may be temperature-controlled to compensate for ambient temperature changes. <IMAGE>
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB7909653A GB2017915A (en) | 1978-03-29 | 1979-03-20 | Liquid level indicators |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1224878 | 1978-03-29 | ||
GB7909653A GB2017915A (en) | 1978-03-29 | 1979-03-20 | Liquid level indicators |
Publications (1)
Publication Number | Publication Date |
---|---|
GB2017915A true GB2017915A (en) | 1979-10-10 |
Family
ID=26248890
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7909653A Withdrawn GB2017915A (en) | 1978-03-29 | 1979-03-20 | Liquid level indicators |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2017915A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2479448A1 (en) * | 1980-03-28 | 1981-10-02 | Inst Nat Sante Rech Med | Ultrasonic measurer of plasma ratio in centrifuged blood - uses gating circuit to switch piezoelectric transducer, from transmit to receive mode to determine measurements for subsequent display |
GB2153998A (en) * | 1984-01-20 | 1985-08-29 | John Alexis Mardas | Apparatus for measuring distance ultrasonically |
US4777821A (en) * | 1985-10-18 | 1988-10-18 | Andreas Gerve | Measuring apparatus for measuring the alteration of a liquid quantity, especially the quantity of oil in an internal combustion engine |
DE3721212A1 (en) * | 1987-06-26 | 1989-01-05 | Vega Grieshaber Gmbh & Co | LEVEL MEASURING DEVICE WITH ULTRASONIC TRANSDUCER |
US5226320A (en) * | 1989-08-22 | 1993-07-13 | Siemens Aktiengesellschaft | Measuring device and process for determining the fill level in fluid containers, preferably for tank installations, with a sound waveguide |
-
1979
- 1979-03-20 GB GB7909653A patent/GB2017915A/en not_active Withdrawn
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2479448A1 (en) * | 1980-03-28 | 1981-10-02 | Inst Nat Sante Rech Med | Ultrasonic measurer of plasma ratio in centrifuged blood - uses gating circuit to switch piezoelectric transducer, from transmit to receive mode to determine measurements for subsequent display |
GB2153998A (en) * | 1984-01-20 | 1985-08-29 | John Alexis Mardas | Apparatus for measuring distance ultrasonically |
US4777821A (en) * | 1985-10-18 | 1988-10-18 | Andreas Gerve | Measuring apparatus for measuring the alteration of a liquid quantity, especially the quantity of oil in an internal combustion engine |
DE3721212A1 (en) * | 1987-06-26 | 1989-01-05 | Vega Grieshaber Gmbh & Co | LEVEL MEASURING DEVICE WITH ULTRASONIC TRANSDUCER |
US5226320A (en) * | 1989-08-22 | 1993-07-13 | Siemens Aktiengesellschaft | Measuring device and process for determining the fill level in fluid containers, preferably for tank installations, with a sound waveguide |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |