DK168462B1 - Fugtighedsindikator - Google Patents
Fugtighedsindikator Download PDFInfo
- Publication number
- DK168462B1 DK168462B1 DK290888A DK290888A DK168462B1 DK 168462 B1 DK168462 B1 DK 168462B1 DK 290888 A DK290888 A DK 290888A DK 290888 A DK290888 A DK 290888A DK 168462 B1 DK168462 B1 DK 168462B1
- Authority
- DK
- Denmark
- Prior art keywords
- prism
- moisture
- absorption
- visible
- substrate
- Prior art date
Links
- 238000010521 absorption reaction Methods 0.000 claims abstract description 23
- 230000003287 optical effect Effects 0.000 claims abstract description 11
- 239000000758 substrate Substances 0.000 claims abstract description 10
- 230000002745 absorbent Effects 0.000 claims description 14
- 239000002250 absorbent Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 14
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 3
- 238000001704 evaporation Methods 0.000 claims description 2
- 230000008020 evaporation Effects 0.000 claims description 2
- 238000005259 measurement Methods 0.000 claims 1
- 239000012780 transparent material Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 239000002689 soil Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000011162 core material Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
- G01N21/43—Refractivity; Phase-affecting properties, e.g. optical path length by measuring critical angle
-
- 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
- G01F23/02—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 gauge glasses or other apparatus involving a window or transparent tube for directly observing the level to be measured or the level of a liquid column in free communication with the main body of the liquid
-
- 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
- G01F23/292—Light, e.g. infrared or ultraviolet
- G01F23/2921—Light, e.g. infrared or ultraviolet for discrete levels
- G01F23/2922—Light, e.g. infrared or ultraviolet for discrete levels with light-conducting sensing elements, e.g. prisms
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fluid Mechanics (AREA)
- Biochemistry (AREA)
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Thermal Sciences (AREA)
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
- Cable Accessories (AREA)
- Indole Compounds (AREA)
- Thermistors And Varistors (AREA)
- Luminescent Compositions (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI863947A FI78564C (fi) | 1986-09-30 | 1986-09-30 | Fuktighetsindikator. |
| FI863947 | 1986-09-30 | ||
| FI8700033 | 1987-03-13 | ||
| PCT/FI1987/000033 WO1988002485A1 (en) | 1986-09-30 | 1987-03-13 | A moisture indicator |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK290888A DK290888A (da) | 1988-05-27 |
| DK290888D0 DK290888D0 (da) | 1988-05-27 |
| DK168462B1 true DK168462B1 (da) | 1994-03-28 |
Family
ID=8523240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK290888A DK168462B1 (da) | 1986-09-30 | 1988-05-27 | Fugtighedsindikator |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US4846572A (ru) |
| EP (1) | EP0324733B1 (ru) |
| JP (1) | JPH0820362B2 (ru) |
| AT (1) | ATE68265T1 (ru) |
| DE (1) | DE3773681D1 (ru) |
| DK (1) | DK168462B1 (ru) |
| FI (1) | FI78564C (ru) |
| NO (1) | NO176374C (ru) |
| SU (1) | SU1718737A3 (ru) |
| WO (1) | WO1988002485A1 (ru) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6766762B2 (en) * | 2001-10-05 | 2004-07-27 | Purdue Research Foundation | Indicator device for soil |
| US20030080304A1 (en) * | 2001-10-31 | 2003-05-01 | Flow-Rite Controls, Inc. | Apparatus and method for monitoring soil moisture conditions and for maintaining soil moisture conditions |
| FR2840068A1 (fr) * | 2002-05-27 | 2003-11-28 | Vincent Letocart | Detecteur de presence d'eau et/ou d'humidite a action mecanique pour travail en milieu explosif |
| US20110107825A1 (en) * | 2009-11-12 | 2011-05-12 | Jenkinson Byron J | Anaerobic soil indicator device |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2943530A (en) * | 1956-10-26 | 1960-07-05 | Elastic Stop Nut Corp | Optical indicator for liquid level |
| US3026718A (en) * | 1959-12-15 | 1962-03-27 | Matson Randolph | Soil moisture indicating gage |
| US3045477A (en) * | 1961-03-02 | 1962-07-24 | Matson Randolph | Soil moisture indicating gage |
| US3345870A (en) * | 1963-11-26 | 1967-10-10 | Yoshinaga Prince Kabushiki Kai | Fuel level indicator |
| US3364733A (en) * | 1964-01-16 | 1968-01-23 | Comstock & Wescott | Liquid content indicating container |
| GB1158573A (en) * | 1966-02-16 | 1969-07-16 | Lambert S Lancaster Ltd | Improvements in or relating to Moisture Determining Devices |
| US3824844A (en) * | 1973-05-11 | 1974-07-23 | Water Rite Inc | Soil moisture monitor |
| FR2301013A1 (fr) * | 1975-02-12 | 1976-09-10 | Anquetin Jacques | Dispositif avertisseur d'assechement |
| DE2726082A1 (de) * | 1977-06-10 | 1978-12-21 | Bosch Siemens Hausgeraete | Optische fluessigkeitsstandanzeige, insbesondere fuer haushaltgeraete, wie geschirrspuel- und waschmaschinen, mit einem lichtleitenden stab |
| US4130012A (en) * | 1977-11-25 | 1978-12-19 | Design Loft Creations, Inc. | Soil moisture indicator |
| GB2152669A (en) * | 1984-01-10 | 1985-08-07 | Thorn Emi Domestic Appliances | A liquid level indicator |
-
1986
- 1986-09-30 FI FI863947A patent/FI78564C/fi not_active IP Right Cessation
-
1987
- 1987-03-13 WO PCT/FI1987/000033 patent/WO1988002485A1/en active IP Right Grant
- 1987-03-13 DE DE8787902090T patent/DE3773681D1/de not_active Expired - Lifetime
- 1987-03-13 AT AT87902090T patent/ATE68265T1/de not_active IP Right Cessation
- 1987-03-13 EP EP87902090A patent/EP0324733B1/en not_active Expired - Lifetime
- 1987-03-19 JP JP62065525A patent/JPH0820362B2/ja not_active Expired - Fee Related
-
1988
- 1988-05-19 NO NO882190A patent/NO176374C/no not_active IP Right Cessation
- 1988-05-27 SU SU884355831A patent/SU1718737A3/ru active
- 1988-05-27 DK DK290888A patent/DK168462B1/da not_active IP Right Cessation
- 1988-09-29 US US07/253,348 patent/US4846572A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| NO176374C (no) | 1995-03-22 |
| JPS6390742A (ja) | 1988-04-21 |
| FI78564B (fi) | 1989-04-28 |
| WO1988002485A1 (en) | 1988-04-07 |
| US4846572A (en) | 1989-07-11 |
| DK290888A (da) | 1988-05-27 |
| NO882190L (no) | 1988-05-19 |
| NO176374B (no) | 1994-12-12 |
| FI863947A0 (fi) | 1986-09-30 |
| FI78564C (fi) | 1989-08-10 |
| DK290888D0 (da) | 1988-05-27 |
| SU1718737A3 (ru) | 1992-03-07 |
| DE3773681D1 (de) | 1991-11-14 |
| NO882190D0 (no) | 1988-05-19 |
| JPH0820362B2 (ja) | 1996-03-04 |
| FI863947A (fi) | 1988-03-31 |
| EP0324733A1 (en) | 1989-07-26 |
| EP0324733B1 (en) | 1991-10-09 |
| ATE68265T1 (de) | 1991-10-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| B1 | Patent granted (law 1993) | ||
| PBP | Patent lapsed |
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