SE9400857L - Ways to perform pulse radar level measurements for liquids with low dielectric coefficient - Google Patents
Ways to perform pulse radar level measurements for liquids with low dielectric coefficientInfo
- Publication number
- SE9400857L SE9400857L SE9400857A SE9400857A SE9400857L SE 9400857 L SE9400857 L SE 9400857L SE 9400857 A SE9400857 A SE 9400857A SE 9400857 A SE9400857 A SE 9400857A SE 9400857 L SE9400857 L SE 9400857L
- Authority
- SE
- Sweden
- Prior art keywords
- pulse
- fluid
- liquids
- ways
- low dielectric
- Prior art date
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
- G01F23/284—Electromagnetic waves
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The depth measurement is effected with echo pulse radar in fluids by measuring only the total time for pulse reflections through both the air over the fluid surface and through the fluid down to the container bottom. With knowledge of the constant distance (H) from the pulse transmitter (4) to the container bottom (3), and the pulse speed partly in air (c1) and partly in the container fluid (c2), the fluid height (H-h) can be calculated as a function of the bottom reflection time, where h is the distance from the transmitter and the liquid surface. If T is the time taken by the return pulse, the fluid height can be solved using equations : 2h=c1t1, 2\*(H-h)=c2t2, and t1+t2=T, where t1 and t2 are the pulse passage times through the air and liquid portions respectively, and h is the distance between the receiver/transmitter and the liquid surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9400857A SE504020C2 (en) | 1994-03-11 | 1994-03-11 | Radar pulse depth measuring method for liquid in vessel e.g. hydrocarbon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9400857A SE504020C2 (en) | 1994-03-11 | 1994-03-11 | Radar pulse depth measuring method for liquid in vessel e.g. hydrocarbon |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| SE9400857D0 SE9400857D0 (en) | 1994-03-11 |
| SE9400857L true SE9400857L (en) | 1995-09-12 |
| SE504020C2 SE504020C2 (en) | 1996-10-21 |
Family
ID=20393273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE9400857A SE504020C2 (en) | 1994-03-11 | 1994-03-11 | Radar pulse depth measuring method for liquid in vessel e.g. hydrocarbon |
Country Status (1)
| Country | Link |
|---|---|
| SE (1) | SE504020C2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE513461C2 (en) * | 1999-10-21 | 2000-09-18 | Saab Marine Electronics | Device for level measurement in tanks |
| NO331262B1 (en) * | 2010-04-12 | 2011-11-14 | Kongsberg Maritime As | Method and apparatus for measuring the density of a liquid |
-
1994
- 1994-03-11 SE SE9400857A patent/SE504020C2/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| SE504020C2 (en) | 1996-10-21 |
| SE9400857D0 (en) | 1994-03-11 |
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