JP5150292B2 - 容器内に存在する媒体の充填状態を検出するための充填状態スイッチと方法 - Google Patents
容器内に存在する媒体の充填状態を検出するための充填状態スイッチと方法 Download PDFInfo
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- JP5150292B2 JP5150292B2 JP2008028850A JP2008028850A JP5150292B2 JP 5150292 B2 JP5150292 B2 JP 5150292B2 JP 2008028850 A JP2008028850 A JP 2008028850A JP 2008028850 A JP2008028850 A JP 2008028850A JP 5150292 B2 JP5150292 B2 JP 5150292B2
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- 238000000034 method Methods 0.000 title description 6
- 239000004020 conductor Substances 0.000 claims description 137
- 238000005259 measurement Methods 0.000 claims description 42
- 238000000605 extraction Methods 0.000 claims description 7
- 230000008859 change Effects 0.000 description 7
- 230000004907 flux Effects 0.000 description 4
- 230000003993 interaction Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- -1 for example Substances 0.000 description 1
- 238000010327 methods by industry Methods 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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Classifications
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- 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
- G01F23/2845—Electromagnetic waves for discrete levels
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- 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
- G01F23/265—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 for discrete levels
-
- 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
- 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
- G01F23/268—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 mounting arrangements of probes
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Description
測定導体装置5と基準導体装置6が実質的に同一の温度影響を受けることによって、実際に容器1内の媒体2との相互作用に起因し、温度ドリフトのような他の外部パラメータの変化にのみ起因するものではない測定電圧の変化のみが切り替え信号として解釈される。
Claims (4)
- 容器(1)内に存在する媒体(2)の充填状態を検出し、前記充填状態に対応する切り替え信号を出力する充填状態スイッチにおいて、
少なくとも1つの電磁的な信号を形成する信号発生器(3)、測定導体装置(5)および基準導体装置(6)を有し、
前記測定導体装置(5)および前記基準導体装置(6)には前記信号発生器(3)によって形成された電磁的な信号がそれぞれ供給され、
前記測定導体装置(5)は供給された前記電磁的な信号が該測定導体装置(5)が前記媒体(2)によって包囲されているか否かに依存して変化するように構成され配置されており、
前記基準導体装置(6)は供給された前記電磁的な信号が前記媒体(2)の充填状態に依存しないように構成され配置されており、
前記測定導体装置(5)の所定の個所には測定電圧を検出するための測定電圧取り出し部(8)が設けられており、
前記基準導体装置(6)の所定の個所には基準電圧を検出するための基準電圧取り出し部(9)が設けられており、
前記測定電圧を前記基準電圧と比較し、該比較の結果に依存する切り替え信号を出力する電圧比較器(12)が設けられ、
前記信号発生器(3)によって形成される電磁的な信号として所定の周波数を有する高周波信号が使用され、
前記測定導体装置(5)および前記基準導体装置(6)には信号結合器(4)を介してそれぞれ同一の信号が供給され、
前記測定導体装置(5)は前記容器(1)内に挿入され、
前記測定導体装置(5)および前記基準導体装置(6)は前記容器(1)内に挿入されている共通のセンサロッド(13)の内部に設けられ、
前記測定導体装置(5)は前記センサロッド(13)の外側の領域に設けられており、前記基準導体装置(6)は前記センサロッド(13)の内側の領域に設けられており、
前記測定導体装置(5)および/または基準導体装置(6)として二重導体装置が設けられていることを特徴とする、充填状態スイッチ。 - 前記センサロッド(13)は誘電性のセンサロッドである、請求項1記載の充填状態スイッチ。
- 前記測定導体装置(5)は開かれた端部(7)を有する、請求項1または2記載の充填状態スイッチ。
- 1つの共通の基準導体装置(6)を有する複数の測定導体装置(5)が設けられている、請求項1から3までのいずれか1項記載の充填状態スイッチ。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007007407.9 | 2007-02-12 | ||
DE102007007407A DE102007007407A1 (de) | 2007-02-12 | 2007-02-12 | Füllstandsschalter und Verfahren zur Erfassung des Füllzustands eines in einem Behälter vorgesehenen Mediums |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2008197101A JP2008197101A (ja) | 2008-08-28 |
JP2008197101A5 JP2008197101A5 (ja) | 2011-03-31 |
JP5150292B2 true JP5150292B2 (ja) | 2013-02-20 |
Family
ID=39339907
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2008028850A Expired - Fee Related JP5150292B2 (ja) | 2007-02-12 | 2008-02-08 | 容器内に存在する媒体の充填状態を検出するための充填状態スイッチと方法 |
Country Status (4)
Country | Link |
---|---|
US (1) | US7730780B2 (ja) |
EP (1) | EP1956349B1 (ja) |
JP (1) | JP5150292B2 (ja) |
DE (1) | DE102007007407A1 (ja) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008016829A1 (de) * | 2008-04-01 | 2009-10-08 | KROHNE Meßtechnik GmbH & Co. KG | Füllstandschalter und Sensorelement für einen Füllstandschalter |
DE102012104075A1 (de) | 2012-05-09 | 2013-11-14 | Endress + Hauser Gmbh + Co. Kg | Vorrichtung zur Bestimmung und/oder Überwachung mindestens einer Prozessgröße eines Mediums |
DE102015100417A1 (de) * | 2015-01-13 | 2016-07-14 | Krohne Messtechnik Gmbh | Verfahren zur Bestimmung des Füllstands eines Mediums in einem Behälter |
DE102015100415A1 (de) | 2015-01-13 | 2016-07-14 | Krohne Messtechnik Gmbh | Vorrichtung zur Bestimmung des Füllstands eines Mediums |
DE102015100414A1 (de) | 2015-01-13 | 2016-07-14 | Krohne Messtechnik Gmbh | Vorrichtung zur Bestimmung des Füllstands eines Mediums in einem Behälter |
FR3089289B1 (fr) | 2018-11-29 | 2020-11-06 | Psa Automobiles Sa | Dispositif de détection du niveau minimal d’un fluide imprimé dans un réservoir |
US11674838B2 (en) | 2019-04-04 | 2023-06-13 | Poseidon Systems Llc | Capacitive fringe field oil level sensor with integrated humidity and temperature sensing |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1599037A (ja) * | 1968-11-12 | 1970-07-15 | ||
US4495807A (en) * | 1983-02-24 | 1985-01-29 | The United States Of America As Represented By The United States Department Of Energy | Precision liquid level sensor |
JPH05188782A (ja) * | 1992-01-10 | 1993-07-30 | Canon Inc | 画像形成装置 |
US5982645A (en) * | 1992-08-25 | 1999-11-09 | Square D Company | Power conversion and distribution system |
US5461321A (en) * | 1993-09-17 | 1995-10-24 | Penberthy, Inc. | Apparatus and method for measuring capacitance from the duration of a charge-discharge charge cycle |
WO1997037198A1 (en) * | 1996-04-03 | 1997-10-09 | Robertshaw Controls Company | Fluid sensor |
JPH1151745A (ja) * | 1997-07-31 | 1999-02-26 | Nitta Ind Corp | レベルセンサ |
JP2001183217A (ja) * | 1999-12-22 | 2001-07-06 | Yazaki Corp | 静電容量式液面レベル計の電極 |
DE10023850B4 (de) * | 2000-05-16 | 2005-02-10 | Alfred Haupt | Kapazitives Meßsystem mit automatischer Kompensation der Kabellänge und des kabelbedingten Temperaturfehlers bei einer kontinuierlichen kapazitiven Füllstandsmessung |
JP2001343272A (ja) * | 2000-06-01 | 2001-12-14 | Hoshizaki Electric Co Ltd | 貯液タンクの液位検知方法および装置 |
FR2847340B1 (fr) * | 2002-11-15 | 2005-02-25 | Jacques Morineau | Procede de mesure de la hauteur d'un liquide au moyen d'une sonde a ligne haute frequence et sonde utilisee |
JP4514117B2 (ja) * | 2004-07-28 | 2010-07-28 | 與宗治 丹治 | 静電容量を利用した液面レベル測定装置 |
DE102005027344A1 (de) * | 2005-06-13 | 2007-01-04 | Ifm Electronic Gmbh | Kapazitives Füllstandsmess- bzw. -erkennungsgerät |
US7581437B2 (en) * | 2006-04-07 | 2009-09-01 | Masco Corporation | Level sensor for granules in water |
-
2007
- 2007-02-12 DE DE102007007407A patent/DE102007007407A1/de not_active Withdrawn
-
2008
- 2008-01-16 EP EP08000764.4A patent/EP1956349B1/de not_active Not-in-force
- 2008-02-08 JP JP2008028850A patent/JP5150292B2/ja not_active Expired - Fee Related
- 2008-02-12 US US12/029,775 patent/US7730780B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP1956349A3 (de) | 2013-02-13 |
JP2008197101A (ja) | 2008-08-28 |
US7730780B2 (en) | 2010-06-08 |
US20080190194A1 (en) | 2008-08-14 |
EP1956349B1 (de) | 2016-01-13 |
DE102007007407A1 (de) | 2008-08-21 |
EP1956349A2 (de) | 2008-08-13 |
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