GB1236591A - Improvements relating to electrical hygrometers - Google Patents

Improvements relating to electrical hygrometers

Info

Publication number
GB1236591A
GB1236591A GB291068A GB291068A GB1236591A GB 1236591 A GB1236591 A GB 1236591A GB 291068 A GB291068 A GB 291068A GB 291068 A GB291068 A GB 291068A GB 1236591 A GB1236591 A GB 1236591A
Authority
GB
United Kingdom
Prior art keywords
wire
humidity
jan
covered
wires
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
GB291068A
Inventor
Peter Rockliff
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB291068A priority Critical patent/GB1236591A/en
Publication of GB1236591A publication Critical patent/GB1236591A/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
    • G01N27/225—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 by using hygroscopic materials
    • 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

1,236,591. Humidity transducer. P. ROCKLIFF. Jan.31, 1969 [Jan.19, 1968], No.2910/68. Heading G1N. A capacitive transducer for measuring humidity comprises two aluminium wires a, b Fig. 6 anodized over part of their length, the anodized portions being twisted together whilst the untreated portion of one wire is covered with an insulating plastics sleeve c over which the untreated end of the other wire is wound. The twisted wire sensor is covered by a tube # with axial slits, and the wire ends are brought out to a coaxial plug g. The aluminium oxide coating constitutes a hydroscopic layer as well as an insulator, to vary the capacitance between the wires with variations in humidity.
GB291068A 1968-01-19 1968-01-19 Improvements relating to electrical hygrometers Expired GB1236591A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB291068A GB1236591A (en) 1968-01-19 1968-01-19 Improvements relating to electrical hygrometers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB291068A GB1236591A (en) 1968-01-19 1968-01-19 Improvements relating to electrical hygrometers

Publications (1)

Publication Number Publication Date
GB1236591A true GB1236591A (en) 1971-06-23

Family

ID=9748376

Family Applications (1)

Application Number Title Priority Date Filing Date
GB291068A Expired GB1236591A (en) 1968-01-19 1968-01-19 Improvements relating to electrical hygrometers

Country Status (1)

Country Link
GB (1) GB1236591A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2356136A1 (en) * 1976-06-24 1978-01-20 Molecular Controls Ltd HUMIDITY GAUGE FOR ELECTRIC HYGROMETERS
GB2246633A (en) * 1990-07-11 1992-02-05 Brownell Limited Improvements in or relating to leak location

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2356136A1 (en) * 1976-06-24 1978-01-20 Molecular Controls Ltd HUMIDITY GAUGE FOR ELECTRIC HYGROMETERS
GB2246633A (en) * 1990-07-11 1992-02-05 Brownell Limited Improvements in or relating to leak location

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