IT1267385B1 - Dispositivo capacitivo di rilevazione di prossimita' per ambienti ad atmosfera corrosiva. - Google Patents
Dispositivo capacitivo di rilevazione di prossimita' per ambienti ad atmosfera corrosiva.Info
- Publication number
- IT1267385B1 IT1267385B1 IT94TO000087A ITTO940087A IT1267385B1 IT 1267385 B1 IT1267385 B1 IT 1267385B1 IT 94TO000087 A IT94TO000087 A IT 94TO000087A IT TO940087 A ITTO940087 A IT TO940087A IT 1267385 B1 IT1267385 B1 IT 1267385B1
- Authority
- IT
- Italy
- Prior art keywords
- proximity detection
- capacitive device
- corrosive atmosphere
- detection capacitive
- atmosphere environments
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P13/00—Indicating or recording presence, absence, or direction, of movement
- G01P13/0006—Indicating or recording presence, absence, or direction, of movement of fluids or of granulous or powder-like substances
- G01P13/0013—Indicating or recording presence, absence, or direction, of movement of fluids or of granulous or powder-like substances by using a solid body which is shifted by the action of the fluid
- G01P13/002—Indicating or recording presence, absence, or direction, of movement of fluids or of granulous or powder-like substances by using a solid body which is shifted by the action of the fluid with electrical coupling to the indicating devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
- G01F1/22—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow by variable-area meters, e.g. rotameters
- G01F1/24—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow by variable-area meters, e.g. rotameters with magnetic or electric coupling to the indicating device
-
- 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
- G01F23/268—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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/16—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
- G01M3/18—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
- G01M3/183—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators for pipe joints or seals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/16—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
- G01M3/18—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
- G01M3/184—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators for valves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/16—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
- G01M3/18—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
- G01M3/186—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators for containers, e.g. radiators
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P13/00—Indicating or recording presence, absence, or direction, of movement
- G01P13/0006—Indicating or recording presence, absence, or direction, of movement of fluids or of granulous or powder-like substances
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/08—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring variation of an electric variable directly affected by the flow, e.g. by using dynamo-electric effect
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/5762—With leakage or drip collecting
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8158—With indicator, register, recorder, alarm or inspection means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Fluid Mechanics (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Aviation & Aerospace Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Immunology (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Electrochemistry (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Examining Or Testing Airtightness (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Drying Of Semiconductors (AREA)
- Weting (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
- Valve Housings (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/019,039 US5316035A (en) | 1993-02-19 | 1993-02-19 | Capacitive proximity monitoring device for corrosive atmosphere environment |
Publications (3)
Publication Number | Publication Date |
---|---|
ITTO940087A0 ITTO940087A0 (it) | 1994-02-15 |
ITTO940087A1 ITTO940087A1 (it) | 1995-08-15 |
IT1267385B1 true IT1267385B1 (it) | 1997-02-05 |
Family
ID=21791111
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT94TO000087A IT1267385B1 (it) | 1993-02-19 | 1994-02-15 | Dispositivo capacitivo di rilevazione di prossimita' per ambienti ad atmosfera corrosiva. |
Country Status (13)
Country | Link |
---|---|
US (2) | US5316035A (it) |
JP (2) | JP2878581B2 (it) |
KR (1) | KR0156595B1 (it) |
BE (1) | BE1008563A3 (it) |
CA (1) | CA2115596C (it) |
DE (1) | DE4404938C2 (it) |
FR (1) | FR2702584B1 (it) |
GB (1) | GB2275340B (it) |
IT (1) | IT1267385B1 (it) |
MX (1) | MX9401283A (it) |
MY (2) | MY110539A (it) |
NL (1) | NL195046C (it) |
SG (1) | SG67324A1 (it) |
Families Citing this family (46)
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US5869766A (en) * | 1995-10-03 | 1999-02-09 | Nt International, Inc. | Non-contaminating pressure transducer module |
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US5672832A (en) * | 1996-02-15 | 1997-09-30 | Nt International, Inc. | Chemically inert flow meter within caustic fluids having non-contaminating body |
US6586954B2 (en) * | 1998-02-10 | 2003-07-01 | Celadon Systems, Inc. | Probe tile for probing semiconductor wafer |
US6201402B1 (en) | 1997-04-08 | 2001-03-13 | Celadon Systems, Inc. | Probe tile and platform for large area wafer probing |
KR100472413B1 (ko) * | 1997-12-19 | 2005-05-19 | 삼성전자주식회사 | 액체이송용배관의리크감지시스템 |
US6250153B1 (en) | 1998-07-06 | 2001-06-26 | Sensor Measurement Technology | Continuous, non-metallic, media sensors for corrosive environments |
US7034660B2 (en) * | 1999-02-26 | 2006-04-25 | Sri International | Sensor devices for structural health monitoring |
US6308728B1 (en) * | 1999-10-27 | 2001-10-30 | Douglas Frazier | Spill containment system and method |
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US6395417B1 (en) * | 1999-10-27 | 2002-05-28 | Douglas Frazier | Spill containment system with a flexible corrosion-resistant liner |
US6578435B2 (en) | 1999-11-23 | 2003-06-17 | Nt International, Inc. | Chemically inert flow control with non-contaminating body |
US6508266B2 (en) * | 2000-03-31 | 2003-01-21 | Toyo Stainless Steel Industries Co., Ltd. | Diaphragm valve |
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US7728609B2 (en) | 2007-05-25 | 2010-06-01 | Celadon Systems, Inc. | Replaceable probe apparatus for probing semiconductor wafer |
US10274216B2 (en) | 2008-08-22 | 2019-04-30 | Rite-Hite Holding Corporation | Under-floor pliable air duct/dispersion systems |
WO2010135479A2 (en) | 2009-05-19 | 2010-11-25 | Expo Power Systems, Inc. | Battery spill containment trays, battery spill containment systems, and methods of battery spill containment |
US8532829B2 (en) | 2010-10-18 | 2013-09-10 | Delaware Capital Formation, Inc. | Controller for water treatment |
US8926834B2 (en) | 2010-10-18 | 2015-01-06 | Delaware Capital Formation, Inc. | Probe for water treatment |
US9014194B2 (en) | 2010-10-18 | 2015-04-21 | Delaware Capital Formation, Inc. | Communication network for water treatment |
US9038455B2 (en) * | 2011-06-21 | 2015-05-26 | Delaware Capital Formation, Inc. | System and method for product level monitoring in a chemical dispensing system |
US9447536B2 (en) | 2011-10-14 | 2016-09-20 | Delaware Capital Formation, Inc. | Intelligent network for chemical dispensing system |
DE102011084741B4 (de) * | 2011-10-19 | 2013-11-07 | Ifm Electronic Gmbh | Näherungsschalter mit metallischer Außenhülle |
US9021890B2 (en) | 2012-09-26 | 2015-05-05 | Rosemount Inc. | Magnetic flowmeter with multiple coils |
US8991264B2 (en) | 2012-09-26 | 2015-03-31 | Rosemount Inc. | Integrally molded magnetic flowmeter |
US10016076B2 (en) | 2013-05-02 | 2018-07-10 | Environmental Compliance Solutions, Llc | Battery spill containment system and method of making the same |
US9304053B2 (en) | 2013-08-07 | 2016-04-05 | Dresser, Inc. | System to monitor performance of packing material in a seal |
US9638344B2 (en) | 2013-11-19 | 2017-05-02 | Dresser, Inc. | System and method to monitor characteristics of an operating fluid in a process line |
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GB201501935D0 (en) | 2015-02-05 | 2015-03-25 | Tooms Moore Consulting Ltd And Trow Consulting Ltd | Water flow analysis |
DE102015203744A1 (de) * | 2015-03-03 | 2016-09-08 | BSH Hausgeräte GmbH | Wasserführendes Haushaltsgerät mit Füllstandserfassung |
USD800591S1 (en) | 2016-03-31 | 2017-10-24 | Homeserve Plc | Flowmeter |
DE102018203633A1 (de) * | 2018-03-09 | 2019-09-12 | Kautex Textron Gmbh & Co. Kg | Betriebsflüssigkeitsbehälter mit kapazitiver Erfassung von Füllständen |
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-
1993
- 1993-02-19 US US08/019,039 patent/US5316035A/en not_active Expired - Lifetime
-
1994
- 1994-02-08 MY MYPI94000280A patent/MY110539A/en unknown
- 1994-02-11 DE DE4404938A patent/DE4404938C2/de not_active Expired - Fee Related
- 1994-02-14 CA CA002115596A patent/CA2115596C/en not_active Expired - Fee Related
- 1994-02-15 IT IT94TO000087A patent/IT1267385B1/it active IP Right Grant
- 1994-02-17 BE BE9400184A patent/BE1008563A3/fr not_active IP Right Cessation
- 1994-02-18 NL NL9400244A patent/NL195046C/nl not_active IP Right Cessation
- 1994-02-18 MX MX9401283A patent/MX9401283A/es unknown
- 1994-02-18 KR KR1019940002925A patent/KR0156595B1/ko not_active IP Right Cessation
- 1994-02-18 SG SG1996005962A patent/SG67324A1/en unknown
- 1994-02-18 GB GB9403178A patent/GB2275340B/en not_active Expired - Fee Related
- 1994-02-18 FR FR9401873A patent/FR2702584B1/fr not_active Expired - Fee Related
- 1994-02-21 JP JP6022665A patent/JP2878581B2/ja not_active Expired - Fee Related
-
1995
- 1995-01-18 US US08/375,185 patent/US5449017A/en not_active Expired - Fee Related
-
1997
- 1997-10-30 JP JP09299082A patent/JP3121299B2/ja not_active Expired - Fee Related
-
1998
- 1998-01-07 MY MYPI98000063A patent/MY129535A/en unknown
Also Published As
Publication number | Publication date |
---|---|
DE4404938A1 (de) | 1994-08-25 |
FR2702584B1 (fr) | 1997-01-24 |
JP2878581B2 (ja) | 1999-04-05 |
DE4404938C2 (de) | 2003-06-12 |
US5449017A (en) | 1995-09-12 |
GB2275340B (en) | 1997-04-16 |
NL9400244A (nl) | 1994-09-16 |
GB2275340A (en) | 1994-08-24 |
JPH075080A (ja) | 1995-01-10 |
US5316035A (en) | 1994-05-31 |
JPH10185770A (ja) | 1998-07-14 |
MY129535A (en) | 2007-04-30 |
FR2702584A1 (fr) | 1994-09-16 |
KR0156595B1 (ko) | 1998-12-01 |
MX9401283A (es) | 1994-08-31 |
GB9403178D0 (en) | 1994-04-06 |
BE1008563A3 (fr) | 1996-06-04 |
ITTO940087A0 (it) | 1994-02-15 |
MY110539A (en) | 1998-07-31 |
CA2115596C (en) | 1999-03-30 |
SG67324A1 (en) | 1999-09-21 |
KR940020521A (ko) | 1994-09-16 |
CA2115596A1 (en) | 1994-08-20 |
JP3121299B2 (ja) | 2000-12-25 |
NL195046C (nl) | 2003-06-27 |
ITTO940087A1 (it) | 1995-08-15 |
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Legal Events
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TA | Fee payment date (situation as of event date), data collected since 19931001 |
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