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GB1132763A - Measuring moisture content and other properties of solids and liquids - Google Patents

Measuring moisture content and other properties of solids and liquids

Info

Publication number
GB1132763A
GB1132763A GB942566A GB942566A GB1132763A GB 1132763 A GB1132763 A GB 1132763A GB 942566 A GB942566 A GB 942566A GB 942566 A GB942566 A GB 942566A GB 1132763 A GB1132763 A GB 1132763A
Authority
GB
United Kingdom
Prior art keywords
solids
liquids
properties
moisture content
measuring 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
Application number
GB942566A
Inventor
Gordon Dalgarno
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.)
ROWNTREE AND Co Ltd
Original Assignee
ROWNTREE AND Co Ltd
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 ROWNTREE AND Co Ltd filed Critical ROWNTREE AND Co Ltd
Priority to GB942566A priority Critical patent/GB1132763A/en
Priority to DE19671598980 priority patent/DE1598980A1/en
Publication of GB1132763A publication Critical patent/GB1132763A/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
    • G01N27/22—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

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (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

1,132,763. Measuring moisture electrically. ROWNTREE & CO. Ltd. March 3, 1967 [March 3, 1966], No.9425/66. Heading G1N. The moisture measuring system of Application 9426/66 is modified for use when there is more than one secondary variable, by the simultaneous application of at least two test frequencies. Output signals are derived from two sets of phase-sensitive detectors, (working at the two applied frequencies), and fed to a suitable "computing" network as before. Preferably the output of one of the detectors is fed to a servosystem to adjust the bridge network and "null-balance" the major phase component. The output to the subsequent computing system is then taken from the feedback potentiometer in the servosystem.
GB942566A 1966-03-03 1966-03-03 Measuring moisture content and other properties of solids and liquids Expired GB1132763A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB942566A GB1132763A (en) 1966-03-03 1966-03-03 Measuring moisture content and other properties of solids and liquids
DE19671598980 DE1598980A1 (en) 1966-03-03 1967-03-03 Measuring device for measuring the degree of moisture and other properties of liquid and solid substances

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB942566A GB1132763A (en) 1966-03-03 1966-03-03 Measuring moisture content and other properties of solids and liquids

Publications (1)

Publication Number Publication Date
GB1132763A true GB1132763A (en) 1968-11-06

Family

ID=9871728

Family Applications (1)

Application Number Title Priority Date Filing Date
GB942566A Expired GB1132763A (en) 1966-03-03 1966-03-03 Measuring moisture content and other properties of solids and liquids

Country Status (2)

Country Link
DE (1) DE1598980A1 (en)
GB (1) GB1132763A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2288022A (en) * 1994-03-23 1995-10-04 Central Research Lab Ltd Method of sensing the condition of a piece of food
WO2006069721A2 (en) 2004-12-22 2006-07-06 Hauni Maschinenbau Ag Measuring device and method for determining a dielectric property, particularly humidity and/or density, of a product
US7659730B2 (en) 2004-12-22 2010-02-09 Hauni Maschinenbau Ag Measuring apparatus and method for recognizing foreign bodies in a product, particularly tobacco, cotton or another fibrous product

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012106939A1 (en) * 2012-07-30 2014-01-30 Innovative Sensor Technology Ist Ag Device for capacitive determination of moisture content of surrounding medium, has electronic unit which is provided to charge sensor element with excitation signal with frequency and to receive measuring signal

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2288022A (en) * 1994-03-23 1995-10-04 Central Research Lab Ltd Method of sensing the condition of a piece of food
WO2006069721A2 (en) 2004-12-22 2006-07-06 Hauni Maschinenbau Ag Measuring device and method for determining a dielectric property, particularly humidity and/or density, of a product
WO2006069721A3 (en) * 2004-12-22 2006-10-19 Hauni Maschinenbau Ag Measuring device and method for determining a dielectric property, particularly humidity and/or density, of a product
US7659730B2 (en) 2004-12-22 2010-02-09 Hauni Maschinenbau Ag Measuring apparatus and method for recognizing foreign bodies in a product, particularly tobacco, cotton or another fibrous product
US7679377B2 (en) 2004-12-22 2010-03-16 Hauni Maschinenbau Ag Measuring apparatus and method for determining a dielectric property, in particular moisture and/or density, in a product

Also Published As

Publication number Publication date
DE1598980A1 (en) 1971-04-01

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