GB844217A - Improvements in or relating to apparatus for testing soil moisture - Google Patents

Improvements in or relating to apparatus for testing soil moisture

Info

Publication number
GB844217A
GB844217A GB1581157A GB1581157A GB844217A GB 844217 A GB844217 A GB 844217A GB 1581157 A GB1581157 A GB 1581157A GB 1581157 A GB1581157 A GB 1581157A GB 844217 A GB844217 A GB 844217A
Authority
GB
United Kingdom
Prior art keywords
electrodes
insulating
cells
voltmeter
ammeter
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
Application number
GB1581157A
Inventor
William Joel Turner Jr
Richard Harrington Raymond
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
W R AMES CO
Original Assignee
W R AMES CO
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by W R AMES CO filed Critical W R AMES CO
Priority to GB1581157A priority Critical patent/GB844217A/en
Priority to FR1177789D priority patent/FR1177789A/en
Publication of GB844217A publication Critical patent/GB844217A/en
Expired legal-status Critical Current

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
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/048—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance for determining moisture content of the material
    • 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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Environmental Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Soil Sciences (AREA)
  • Water Supply & Treatment (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

844,217. Electric indicating systems. AMES CO., W. R. May 17, 1957, No. 15811/57. Class 40 (1). The moisture content of soil is measured by means of a stake which may be inserted in a tapered hole in the ground and which consists of a number of spaced conductivity measuring cells each having a pair of electrodes in a moisture-absorbing material. As shown (Fig. 2), the stake consists of a central insulating tube 15 on which are the cells 12 spaced from each other by spacers 14 and insulating rings 13. Each cell consists of a pair of ring-shaped electrodes 19, 20 mounted on an insulating sleeve 21 which is secured to the core 15. The electrodes are surrounded by an hygroscopic material which may be gypsum. The spacing material may also be gypsum. Connections to the electrodes are made by a multi-core cable which enters the central tube through a screwed cup 25 and the individual cores of which are led to the appropriate electrodes through a longitudinal slot 16 in the central tube. A shaped end piece 28 is also provided. In a further embodiment (Figs. 4 and 5, not shown) the electrodes consist of concentric cylindrical meshes and the spacers of polystyrene making insulating elements 13 unnecessary. The resistance of the individual cells is measured by the arrangement of Fig. 6 in which a part of the output of oscillator 59 is tapped by potentiometer 61, voltmeter 63 being connected in circuit to show that the output is the same and is then applied through an ammeter 64 to the conductivity cell 12 selected by switch 67. Ammeter 64 and voltmeter 63 may be incorporated in a compound instrument with a single needle.
GB1581157A 1957-05-17 1957-05-17 Improvements in or relating to apparatus for testing soil moisture Expired GB844217A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1581157A GB844217A (en) 1957-05-17 1957-05-17 Improvements in or relating to apparatus for testing soil moisture
FR1177789D FR1177789A (en) 1957-05-17 1957-05-23 Soil moisture tester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1581157A GB844217A (en) 1957-05-17 1957-05-17 Improvements in or relating to apparatus for testing soil moisture

Publications (1)

Publication Number Publication Date
GB844217A true GB844217A (en) 1960-08-10

Family

ID=10065913

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1581157A Expired GB844217A (en) 1957-05-17 1957-05-17 Improvements in or relating to apparatus for testing soil moisture

Country Status (2)

Country Link
FR (1) FR1177789A (en)
GB (1) GB844217A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2544497A (en) * 2015-11-18 2017-05-24 Bosnak Matevz Manifold moisture sensor
CN106959322A (en) * 2017-04-17 2017-07-18 中国电建集团贵阳勘测设计研究院有限公司 Monitoring slip mass soaks the method and device of depth in real time for a long time in a kind of field
CN109443976A (en) * 2018-11-05 2019-03-08 敦煌研究院 A kind of Rock And Soil moisture content easily-testing tool and method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3039698A (en) * 1960-02-29 1962-06-19 John A Richards Automatic control for sprinkler system
IL98027A (en) * 1991-05-02 1996-01-31 Technion Res & Dev Foundation Method and apparatus for irrigation control

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2544497A (en) * 2015-11-18 2017-05-24 Bosnak Matevz Manifold moisture sensor
CN106959322A (en) * 2017-04-17 2017-07-18 中国电建集团贵阳勘测设计研究院有限公司 Monitoring slip mass soaks the method and device of depth in real time for a long time in a kind of field
CN109443976A (en) * 2018-11-05 2019-03-08 敦煌研究院 A kind of Rock And Soil moisture content easily-testing tool and method

Also Published As

Publication number Publication date
FR1177789A (en) 1959-04-29

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