GB1233789A - - Google Patents

Info

Publication number
GB1233789A
GB1233789A GB1233789DA GB1233789A GB 1233789 A GB1233789 A GB 1233789A GB 1233789D A GB1233789D A GB 1233789DA GB 1233789 A GB1233789 A GB 1233789A
Authority
GB
United Kingdom
Prior art keywords
soil
tested
porosity
pore size
capacitor
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
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
Priority claimed from DE19671673046 external-priority patent/DE1673046A1/en
Application filed filed Critical
Publication of GB1233789A publication Critical patent/GB1233789A/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
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/24—Earth materials
    • G01N33/246—Earth materials for water content
    • 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
    • G01N27/223—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance for determining moisture content, e.g. humidity

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Medicinal Chemistry (AREA)
  • Food Science & Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Remote Sensing (AREA)
  • Geology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

1,233,789. Measuring soil moisture content electrically. SIEMENS A. G. Sept. 26, 1968, (Nov.7, 1967], No.45866/68. Heading G1N. [Also in Division H1] A capacitor for testing soil moisture content comprises a porous dielectric 3, a rod electrode 1 and a helical electrode 12 disposed coaxially of the rod in a helical groove on the dielectric, which latter is a ceramic of known porosity and pore size. One or each of the electrodes has a coating (not shown) of a synthetic plastics insulating material. In use, the capacitor is brought into contact with a soil to be tested so that the dielectric absorbs water from the soil and the resultant capacitance is dependent upon the porosity and pore size of the tested soil. The capacitor may be celibrated if the porosity and pore size of the tested soil are known. The dielectric 3 can be chosen to be of similar porosity and pore size to the soil to be tested. The capacitor forms part of an A. C. measuring bridge. 5-11.
GB1233789D 1967-11-07 1968-09-26 Expired GB1233789A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19671673046 DE1673046A1 (en) 1967-11-07 1967-11-07 Device for measuring soil moisture

Publications (1)

Publication Number Publication Date
GB1233789A true GB1233789A (en) 1971-05-26

Family

ID=5686517

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1233789D Expired GB1233789A (en) 1967-11-07 1968-09-26

Country Status (5)

Country Link
AT (1) AT288057B (en)
CH (1) CH486698A (en)
FR (1) FR1590868A (en)
GB (1) GB1233789A (en)
IL (1) IL30841A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2398637A (en) * 2002-12-16 2004-08-25 Sentek Pty Ltd Soil matric potential and salinity measurement
CN106246174A (en) * 2016-08-12 2016-12-21 中国石油天然气集团公司 A kind of column specific retention detection probe based on electromagnetic wave

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2512958A3 (en) * 1981-09-17 1983-03-18 Raffinage Cie Francaise Cell for continuous measurement of dielectric constant - has tube connected to pipe system and has separated conducting strips wound around it to form electrodes
FR3040730B1 (en) * 2015-09-08 2017-10-06 Ifp Energies Now PROBE OF PERMANENT MEASUREMENTS IN SOIL AND BASEMENT

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2398637A (en) * 2002-12-16 2004-08-25 Sentek Pty Ltd Soil matric potential and salinity measurement
GB2398637B (en) * 2002-12-16 2006-07-05 Sentek Pty Ltd Soil matric potential and salinity measurement apparatus and method of use
ES2276553A1 (en) * 2002-12-16 2007-06-16 Sentek Pty. Ltd. Soil matric potential and salinity measurement apparatus and method of use
CN106246174A (en) * 2016-08-12 2016-12-21 中国石油天然气集团公司 A kind of column specific retention detection probe based on electromagnetic wave
CN106246174B (en) * 2016-08-12 2019-06-11 中国石油天然气集团公司 A kind of column specific retention detection probe based on electromagnetic wave

Also Published As

Publication number Publication date
CH486698A (en) 1970-02-28
FR1590868A (en) 1970-04-20
IL30841A0 (en) 1968-12-26
AT288057B (en) 1971-02-25
IL30841A (en) 1971-11-29

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees