GB1158573A - Improvements in or relating to Moisture Determining Devices - Google Patents
Improvements in or relating to Moisture Determining DevicesInfo
- Publication number
- GB1158573A GB1158573A GB675166A GB675166A GB1158573A GB 1158573 A GB1158573 A GB 1158573A GB 675166 A GB675166 A GB 675166A GB 675166 A GB675166 A GB 675166A GB 1158573 A GB1158573 A GB 1158573A
- Authority
- GB
- United Kingdom
- Prior art keywords
- soil
- visible
- elongate member
- moisture content
- moisture
- 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
Links
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
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G25/00—Watering gardens, fields, sports grounds or the like
- A01G25/16—Control of watering
- A01G25/167—Control by humidity of the soil itself or of devices simulating soil or of the atmosphere; Soil humidity sensors
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G27/00—Self-acting watering devices, e.g. for flower-pots
- A01G27/008—Component parts, e.g. dispensing fittings, level indicators
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental Sciences (AREA)
- Water Supply & Treatment (AREA)
- General Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Analytical Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Soil Sciences (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
1,158,573. Testing moisture content. LAMBERT'S (LANCASTER) Ltd. Aug. 10, 1966 [Feb. 16, 1966], No. 6751/66. Heading G1S. A device for determining the presence of moisture in soil comprises an elongate member 10 of light transmitting material formed at one end with a foot 12 having a bottom light reflecting surface 13 adapted for location on the soil and a sloping viewing surface 14 with a curved light diffusing heal surface 15 behind the viewing surface. The elongate member 10 is in the form of a transparent rod of clear acrylic resin or polystyrene. In use when the bottom surface 13 is pressed firmly on the soil 16 Fig. 1 (not shown) the amount of light reflected from the bottom surface is dependent on the moisture content of the soil i.e. if a large dark patch is visible the soil is wet, several dark patches indicate dampness and if no dark patches are visible the soil is dry.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB675166A GB1158573A (en) | 1966-02-16 | 1966-02-16 | Improvements in or relating to Moisture Determining Devices |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB675166A GB1158573A (en) | 1966-02-16 | 1966-02-16 | Improvements in or relating to Moisture Determining Devices |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1158573A true GB1158573A (en) | 1969-07-16 |
Family
ID=9820120
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB675166A Expired GB1158573A (en) | 1966-02-16 | 1966-02-16 | Improvements in or relating to Moisture Determining Devices |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1158573A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4846572A (en) * | 1986-09-30 | 1989-07-11 | Moistic Oy | Moisture indicator |
GB2249182A (en) * | 1990-09-05 | 1992-04-29 | Nat Res Dev | Irrigation sensor device |
EP1308085A2 (en) * | 2001-10-31 | 2003-05-07 | Flow-Rite Controls, Ltd. | Apparatus and method for monitoring soil moisture conditions and for maintaining soil moisture conditions |
-
1966
- 1966-02-16 GB GB675166A patent/GB1158573A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4846572A (en) * | 1986-09-30 | 1989-07-11 | Moistic Oy | Moisture indicator |
GB2249182A (en) * | 1990-09-05 | 1992-04-29 | Nat Res Dev | Irrigation sensor device |
GB2249182B (en) * | 1990-09-05 | 1994-02-09 | Nat Res Dev | Irrigation sensor device |
EP1308085A2 (en) * | 2001-10-31 | 2003-05-07 | Flow-Rite Controls, Ltd. | Apparatus and method for monitoring soil moisture conditions and for maintaining soil moisture conditions |
EP1308085A3 (en) * | 2001-10-31 | 2003-07-16 | Flow-Rite Controls, Ltd. | Apparatus and method for monitoring soil moisture conditions and for maintaining soil moisture conditions |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |