KR900702337A - 충전-레벨 표시기 - Google Patents
충전-레벨 표시기Info
- Publication number
- KR900702337A KR900702337A KR1019900700475A KR900700475A KR900702337A KR 900702337 A KR900702337 A KR 900702337A KR 1019900700475 A KR1019900700475 A KR 1019900700475A KR 900700475 A KR900700475 A KR 900700475A KR 900702337 A KR900702337 A KR 900702337A
- Authority
- KR
- South Korea
- Prior art keywords
- transmitter
- charge
- level indicator
- acoustic
- fuel tank
- 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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
내용 없음
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
Claims (2)
- 연료 탱크(10)의 내부와 결정될 매체의 내부로 돌출하고 적어도 하나의 음향-전도 재료로 구성되는 적어도 하나의 음향 전송체(11)와 음파를 방사하는 송신기(13)및 수신기에 의해 작동하는 특히 자동차 연료 탱크용 충전-레벨 표시기(12)에 있어서, 음향 전송체(11)재료 탄성 계수의 온도 계수(TKE)가 그 종방향 신장의 온도 계수(TKL)와 부호만 다르고 크기는 같은 것을 특징으로 하는 충전-레벨 표시기.
- 제1항에 있어서, 송신기(13)에 의해 전송체(11)내부로 투입되는 곡선파의 주파수(f)는 방정식 fopt=50KHzmm/d(d:전송체(11)의 두께)에 대응하는 것을 특징으로 하는 충전-레벨 표시기.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP3822993.5 | 1988-07-07 | ||
DE3822993A DE3822993A1 (de) | 1988-07-07 | 1988-07-07 | Fuellstandsanzeiger |
PCT/DE1989/000346 WO1990000725A1 (de) | 1988-07-07 | 1989-05-31 | Füllstandsanzeiger |
Publications (1)
Publication Number | Publication Date |
---|---|
KR900702337A true KR900702337A (ko) | 1990-12-06 |
Family
ID=6358148
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019900700475A KR900702337A (ko) | 1988-07-07 | 1989-05-31 | 충전-레벨 표시기 |
Country Status (6)
Country | Link |
---|---|
US (1) | US5042298A (ko) |
EP (1) | EP0413754B1 (ko) |
JP (1) | JPH03500333A (ko) |
KR (1) | KR900702337A (ko) |
DE (2) | DE3822993A1 (ko) |
WO (1) | WO1990000725A1 (ko) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2013859A1 (en) * | 1990-04-04 | 1991-10-04 | Cheng-Kuei Jen | Thin rod flexural acoustic wave sensors |
DE10139242A1 (de) * | 2001-08-09 | 2003-03-06 | Grieshaber Vega Kg | Verfahren und Vorrichtung zum Erfassen eines Befüllvorgangs |
US20060169055A1 (en) * | 2005-01-06 | 2006-08-03 | Sensotech | Method and system for measuring fluid level in a container |
US8919193B2 (en) | 2011-08-30 | 2014-12-30 | Street Smart Sensors Llc | Ultrasonic liquid level detector |
DE102012021794B3 (de) * | 2012-11-08 | 2014-01-16 | Krohne Messtechnik Gmbh | Messanordnung zur Bestimmung einer Messgröße |
EP3511685A1 (en) * | 2018-01-16 | 2019-07-17 | Ovinto cvba | Improved evaluation of filling state in cargo transport |
US11714176B1 (en) * | 2022-09-23 | 2023-08-01 | Texzec, Inc. | Helical acoustic liquid level sensor |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2910999A (en) * | 1958-07-03 | 1959-11-03 | Jersey Prod Res Co | Gas-operated liquid level sensor |
US3133442A (en) * | 1962-05-23 | 1964-05-19 | Rosemount Eng Co Ltd | Level sensor |
US3229523A (en) * | 1963-09-10 | 1966-01-18 | Charles A Boyd | Apparatus employing vibratory energy |
US3512400A (en) * | 1967-04-13 | 1970-05-19 | Panametrics | Ultrasonic testing method |
GB1595194A (en) * | 1977-09-13 | 1981-08-12 | Marconi Co Ltd | Liquid level sensing device |
JPS59107236A (ja) * | 1982-12-13 | 1984-06-21 | Chichibu Cement Co Ltd | 粘度測定方法 |
-
1988
- 1988-07-07 DE DE3822993A patent/DE3822993A1/de not_active Withdrawn
-
1989
- 1989-05-31 KR KR1019900700475A patent/KR900702337A/ko not_active Application Discontinuation
- 1989-05-31 US US07/466,274 patent/US5042298A/en not_active Expired - Fee Related
- 1989-05-31 WO PCT/DE1989/000346 patent/WO1990000725A1/de active IP Right Grant
- 1989-05-31 EP EP89906037A patent/EP0413754B1/de not_active Expired - Lifetime
- 1989-05-31 DE DE8989906037T patent/DE58903301D1/de not_active Expired - Fee Related
- 1989-05-31 JP JP1505392A patent/JPH03500333A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
EP0413754B1 (de) | 1993-01-13 |
US5042298A (en) | 1991-08-27 |
DE3822993A1 (de) | 1990-01-11 |
EP0413754A1 (de) | 1991-02-27 |
DE58903301D1 (de) | 1993-02-25 |
WO1990000725A1 (de) | 1990-01-25 |
JPH03500333A (ja) | 1991-01-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WITN | Application deemed withdrawn, e.g. because no request for examination was filed or no examination fee was paid |