DE3990989T - - Google Patents
Info
- Publication number
- DE3990989T DE3990989T DE19893990989 DE3990989T DE3990989T DE 3990989 T DE3990989 T DE 3990989T DE 19893990989 DE19893990989 DE 19893990989 DE 3990989 T DE3990989 T DE 3990989T DE 3990989 T DE3990989 T DE 3990989T
- Authority
- DE
- Germany
- 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- Withdrawn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
- G01F23/26—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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
- G01B7/06—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US23690488A | 1988-08-25 | 1988-08-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3990989T true DE3990989T (zh) | 1992-01-30 |
Family
ID=22891481
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19893990989 Withdrawn DE3990989T (zh) | 1988-08-25 | 1989-08-25 |
Country Status (5)
Country | Link |
---|---|
JP (1) | JP2930340B2 (zh) |
CA (1) | CA1338881C (zh) |
DE (1) | DE3990989T (zh) |
GB (1) | GB2247529B (zh) |
WO (1) | WO1990002319A1 (zh) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2351902B (en) * | 1999-07-14 | 2001-06-27 | Earth Anchors Ltd | A bench |
KR100434930B1 (ko) * | 2001-03-07 | 2004-06-14 | 박경래 | 양궁용 안정기의 보강장치 |
DE102007049526A1 (de) * | 2007-10-15 | 2009-04-16 | Endress + Hauser Gmbh + Co. Kg | Vorrichtung zur Bestimmung und/oder Überwachung einer Prozessgröße |
SE541463C2 (sv) * | 2017-10-06 | 2019-10-08 | Sealwacs Ab | Plastsvetssensor |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4800755A (en) * | 1982-08-25 | 1989-01-31 | Berwind Corporation | Capacitance-type material level indicator |
US4686857A (en) * | 1983-03-04 | 1987-08-18 | Kabushiki Kaisha Toyota Chuo Kenkyusho | Method and apparatus for evaluating the performance of dielectric substances |
US4624139A (en) * | 1984-09-21 | 1986-11-25 | Berwind Corporation | Capacitance-type material level indicator |
US4676100A (en) * | 1984-10-31 | 1987-06-30 | Berwind Corporation | Capacitance-type material level indicator |
US4638305A (en) * | 1985-03-22 | 1987-01-20 | General Motors Corporation | Apparatus for detecting water in fuel |
DE3537129C2 (de) * | 1985-10-18 | 1996-06-13 | Crostack Horst Artur Prof Dr I | Verfahren und Vorrichtung zur zerstörungsfreien Werkstoffprüfung, insbesondere zur Dickenbestimmung |
US4723122A (en) * | 1985-10-25 | 1988-02-02 | Drexelbrook Controls, Inc. | Remotely calibratable instrument system |
US4757252A (en) * | 1985-10-25 | 1988-07-12 | Drexelbrook Controls, Inc. | Probe system for measuring the condition of materials |
US4676101A (en) * | 1986-09-03 | 1987-06-30 | Walbro Corporation | Capacitance-type material level indicator |
US4749988A (en) * | 1986-11-20 | 1988-06-07 | Imtec Products, Inc. | Non-invasive liquid level sensor |
-
1989
- 1989-08-25 WO PCT/US1989/003694 patent/WO1990002319A1/en active Application Filing
- 1989-08-25 JP JP1510850A patent/JP2930340B2/ja not_active Expired - Lifetime
- 1989-08-25 DE DE19893990989 patent/DE3990989T/de not_active Withdrawn
- 1989-08-25 CA CA 609418 patent/CA1338881C/en not_active Expired - Fee Related
-
1991
- 1991-02-25 GB GB9103868A patent/GB2247529B/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
WO1990002319A1 (en) | 1990-03-08 |
JPH04501770A (ja) | 1992-03-26 |
GB2247529B (en) | 1993-04-14 |
JP2930340B2 (ja) | 1999-08-03 |
GB2247529A (en) | 1992-03-04 |
CA1338881C (en) | 1997-01-28 |
GB9103868D0 (en) | 1991-05-15 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8139 | Disposal/non-payment of the annual fee |