CA1338881C - Coating-responsive condition monitoring system - Google Patents
Coating-responsive condition monitoring systemInfo
- Publication number
- CA1338881C CA1338881C CA 609418 CA609418A CA1338881C CA 1338881 C CA1338881 C CA 1338881C CA 609418 CA609418 CA 609418 CA 609418 A CA609418 A CA 609418A CA 1338881 C CA1338881 C CA 1338881C
- Authority
- CA
- Canada
- Prior art keywords
- bridge
- output
- coupled
- sensor
- admittance
- 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 - Fee Related
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 59
- 238000012544 monitoring process Methods 0.000 title claims abstract description 57
- 239000011248 coating agent Substances 0.000 title claims abstract description 56
- 239000000463 material Substances 0.000 claims abstract description 120
- 230000004044 response Effects 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims 2
- 239000003990 capacitor Substances 0.000 description 48
- 238000010586 diagram Methods 0.000 description 18
- 238000005259 measurement Methods 0.000 description 18
- 230000000694 effects Effects 0.000 description 16
- 238000004804 winding Methods 0.000 description 16
- 230000006870 function Effects 0.000 description 10
- 230000008878 coupling Effects 0.000 description 8
- 238000010168 coupling process Methods 0.000 description 8
- 238000005859 coupling reaction Methods 0.000 description 8
- 238000012545 processing Methods 0.000 description 7
- 238000001914 filtration Methods 0.000 description 6
- 230000000670 limiting effect Effects 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 5
- 230000003321 amplification Effects 0.000 description 4
- 238000003199 nucleic acid amplification method Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 3
- 230000002452 interceptive effect Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003071 parasitic effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 108091081062 Repeated sequence (DNA) Proteins 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000001464 adherent effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 230000010006 flight Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000011896 sensitive detection Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 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
- G01F23/26—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)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US23690488A | 1988-08-25 | 1988-08-25 | |
| US236,904 | 1994-04-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1338881C true CA1338881C (en) | 1997-01-28 |
Family
ID=22891481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 609418 Expired - Fee Related CA1338881C (en) | 1988-08-25 | 1989-08-25 | Coating-responsive condition monitoring system |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP2930340B2 (enrdf_load_stackoverflow) |
| CA (1) | CA1338881C (enrdf_load_stackoverflow) |
| DE (1) | DE3990989T (enrdf_load_stackoverflow) |
| GB (1) | GB2247529B (enrdf_load_stackoverflow) |
| WO (1) | WO1990002319A1 (enrdf_load_stackoverflow) |
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 (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2041678A1 (de) | 1969-09-06 | 1971-03-11 | Greiner Electronic Ag | Verfahren zum Betrieb einer Transferpipette |
| 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 JP JP1510850A patent/JP2930340B2/ja not_active Expired - Lifetime
- 1989-08-25 WO PCT/US1989/003694 patent/WO1990002319A1/en active Application Filing
- 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 |
|---|---|
| GB2247529B (en) | 1993-04-14 |
| DE3990989T (enrdf_load_stackoverflow) | 1992-01-30 |
| GB9103868D0 (en) | 1991-05-15 |
| JP2930340B2 (ja) | 1999-08-03 |
| WO1990002319A1 (en) | 1990-03-08 |
| GB2247529A (en) | 1992-03-04 |
| JPH04501770A (ja) | 1992-03-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |