JPH0255723B2 - - Google Patents
Info
- Publication number
- JPH0255723B2 JPH0255723B2 JP60139236A JP13923685A JPH0255723B2 JP H0255723 B2 JPH0255723 B2 JP H0255723B2 JP 60139236 A JP60139236 A JP 60139236A JP 13923685 A JP13923685 A JP 13923685A JP H0255723 B2 JPH0255723 B2 JP H0255723B2
- Authority
- JP
- Japan
- Prior art keywords
- sensor
- heating time
- electrothermal
- voltage
- ambient temperature
- 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 - Lifetime
Links
- 238000010438 heat treatment Methods 0.000 claims description 49
- 238000000034 method Methods 0.000 claims description 24
- 230000010354 integration Effects 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 8
- 230000000052 comparative effect Effects 0.000 claims description 2
- 238000000691 measurement method Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 description 29
- 239000000523 sample Substances 0.000 description 11
- 239000003990 capacitor Substances 0.000 description 10
- 230000008859 change Effects 0.000 description 9
- 238000011156 evaluation Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 238000012546 transfer Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 238000004886 process control Methods 0.000 description 5
- 238000007654 immersion Methods 0.000 description 4
- 230000002123 temporal effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 238000012806 monitoring device Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
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
- G01F23/24—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 resistance of resistors due to contact with conductor fluid
- G01F23/246—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 resistance of resistors due to contact with conductor fluid thermal devices
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Resistance Or Impedance (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3423802.6 | 1984-06-28 | ||
DE19843423802 DE3423802A1 (de) | 1984-06-28 | 1984-06-28 | Verfahren und einrichtung zur elektrothermischen, umgebungstemperatur-kompensierten fuellstandsmessung |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6118827A JPS6118827A (ja) | 1986-01-27 |
JPH0255723B2 true JPH0255723B2 (en, 2012) | 1990-11-28 |
Family
ID=6239346
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP60139236A Granted JPS6118827A (ja) | 1984-06-28 | 1985-06-27 | 電熱的周囲温度補償充填レベル測定方法および装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US4640127A (en, 2012) |
EP (1) | EP0166034B1 (en, 2012) |
JP (1) | JPS6118827A (en, 2012) |
DE (2) | DE3423802A1 (en, 2012) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3601100A1 (de) * | 1986-01-16 | 1987-07-23 | Vdo Schindling | System zur fuellstandsmessung |
FR2599835B1 (fr) * | 1986-06-04 | 1988-08-26 | Bendix Electronics Sa | Procede et dispositif de mesure du niveau de la surface libre d'un liquide |
US4781057A (en) * | 1987-01-16 | 1988-11-01 | Hyfantis Jr George J | Method and apparatus for detecting leaks in a liquid-containing tank |
US4862733A (en) * | 1987-01-16 | 1989-09-05 | Hyfantis Jr George J | Method and apparatus for detecting leaks in a liquid-containing tank |
US5172117A (en) * | 1989-06-19 | 1992-12-15 | Linear Instruments | Analog to digital conversion using an integrater and a sample and hold circuit |
US5140135A (en) * | 1989-09-21 | 1992-08-18 | Rosemount Inc. | Adaptive ice detector circuit |
US5111692A (en) * | 1990-03-27 | 1992-05-12 | Fluid Components, Inc. | Temperature compensated liquid level and fluid flow sensor |
US5321633A (en) * | 1990-04-10 | 1994-06-14 | Yazaki Corporation | Heat radiating type liquid level sensing system and the method therefor |
JP2548252Y2 (ja) * | 1990-10-15 | 1997-09-17 | 株式会社カンセイ | 液面位検出装置 |
US5228340A (en) * | 1991-05-01 | 1993-07-20 | Yazaki Corporation | Method and apparatus for heat radiating type level sensor measurement of liquid level |
DE4117050A1 (de) * | 1991-05-24 | 1992-11-26 | Vdo Schindling | Verfahren zur fuellstandsmessung |
FR2681684B1 (fr) * | 1991-09-24 | 1993-12-24 | Applications Gles Elect Meca | Procede et circuit de controle du niveau d'un liquide dans un carter. |
FR2690245A1 (fr) * | 1992-04-21 | 1993-10-22 | Sagem | Procédé de contrôle du niveau d'un liquide par élément résistif et circuit pour la mise en Óoeuvre du procédé. |
JP2587402B2 (ja) * | 1992-07-27 | 1997-03-05 | アタカ工業株式会社 | ダクト内探査装置 |
DE4232043A1 (de) * | 1992-09-24 | 1994-03-31 | Siemens Ag | Verfahren und Einrichtung zur Füllstandsüberwachung sowie Verwendung dieser im Dauerbetrieb |
US20050230553A1 (en) * | 2004-03-31 | 2005-10-20 | Rosemount Aerospace Inc. | Ice detector for improved ice detection at near freezing condition |
US7104502B2 (en) * | 2004-03-31 | 2006-09-12 | Rosemount Aerospace Inc. | Ice detector for improved ice detection at near freezing condition |
DE102007001192A1 (de) * | 2007-01-05 | 2008-07-10 | Siemens Ag | Vorrichtung und Verfahren zur Bestimmung eines Füllstandes und einer Temperatur eines Fluids |
US8401760B2 (en) * | 2009-07-07 | 2013-03-19 | Honeywell International Inc. | Gas turbine engine oil consumption monitoring system and method |
JP5583153B2 (ja) * | 2012-01-26 | 2014-09-03 | 株式会社東芝 | 液面レベル検知装置及び方法 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3947665A (en) * | 1974-04-22 | 1976-03-30 | Vsi Energy Systems International, Inc. | Control system and method |
GB1543351A (en) * | 1975-09-08 | 1979-04-04 | Horiba Ltd | Determination of oil content in water discharged from a tanker |
FR2367276A1 (fr) * | 1976-10-06 | 1978-05-05 | Jaeger | Dispositif permettant le controle du niveau de liquide contenu dans un reservoir |
NO147929C (no) * | 1976-12-20 | 1983-07-06 | Bronson M Potter | Deteksjonssystem for oljeforurensning. |
DE2946585A1 (de) * | 1979-11-19 | 1981-05-27 | Vdo Adolf Schindling Ag, 6000 Frankfurt | Einrichtung zum elektrischen ueberwachen des niveaus einer in einem behaelter enthaltenen fluessigkeit |
DE3022398A1 (de) * | 1980-06-14 | 1982-01-07 | Vdo Adolf Schindling Ag, 6000 Frankfurt | Einrichtung zum elektrischen ueberwachen des niveaus einer in einem behaelter enthaltenen fluessigkeit |
FR2514134A2 (fr) * | 1981-10-07 | 1983-04-08 | Jaeger | Perfectionnements aux dispositifs de controle de niveau du liquide contenu dans un reservoir |
FR2514497A1 (fr) * | 1981-10-08 | 1983-04-15 | Jaeger | Dispositif de detection numerique de niveau par fil chaud |
US4525792A (en) * | 1982-03-29 | 1985-06-25 | Smiths Industries Public Limited Company | Unidirectional capacitive fluid-gauging systems |
-
1984
- 1984-06-28 DE DE19843423802 patent/DE3423802A1/de not_active Withdrawn
- 1984-12-27 EP EP84116361A patent/EP0166034B1/de not_active Expired
- 1984-12-27 DE DE8484116361T patent/DE3470950D1/de not_active Expired
-
1985
- 1985-05-01 US US06/729,493 patent/US4640127A/en not_active Expired - Fee Related
- 1985-06-27 JP JP60139236A patent/JPS6118827A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
EP0166034A1 (de) | 1986-01-02 |
DE3470950D1 (en) | 1988-06-09 |
US4640127A (en) | 1987-02-03 |
JPS6118827A (ja) | 1986-01-27 |
EP0166034B1 (de) | 1988-05-04 |
DE3423802A1 (de) | 1986-01-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPH0255723B2 (en, 2012) | ||
US4163391A (en) | Device for checking the level of a liquid in a tank | |
EP1081499B1 (en) | Means for estimating charged state of battery and method for estimating degraded state of battery | |
US4619140A (en) | Circuit arrangement for the electrothermal measurement of level | |
US4334186A (en) | Apparatus for driving hot-wire type flow sensor | |
US4958127A (en) | Method and apparatus for determining the state of charge of a battery | |
US4425795A (en) | Device for the electric monitoring of the level of a liquid contained in a container | |
US6232747B1 (en) | Remaining-amount-of-battery detecting device | |
JP2667993B2 (ja) | 電池電圧検出装置 | |
US4633491A (en) | Circuit for electrothermal level measurement compensated for ambient temperature | |
KR910008910A (ko) | 배터리의 충전 상태 결정 장치 | |
US4217543A (en) | Digital conductance meter | |
US4584554A (en) | Engine oil level detecting device | |
WO1991006849A1 (en) | Combustible gas detection | |
JPS62293126A (ja) | レベル測定方法および装置 | |
JPH04248472A (ja) | 抵抗値測定方法 | |
JP3580817B2 (ja) | 測定増幅器 | |
US5500834A (en) | Device for measuring time lapse after turn off of power source and method thereof | |
GB1589957A (en) | Method and apparatus for determining the resistance value of an unknown resistance by measuring the conductance of that resistance | |
GB2056695A (en) | An analog measuring installation for the remote display of a measured value | |
GB2076166A (en) | Method of Measuring and Indicating the State of Charge of an Accumulator | |
JPS6129657B2 (en, 2012) | ||
JP2548252Y2 (ja) | 液面位検出装置 | |
JP2839328B2 (ja) | 放熱式レベルセンサー | |
SU1739211A1 (ru) | Устройство дл измерени разности температур |