GB867046A - Improvements in and relating to hygrometric elements - Google Patents

Improvements in and relating to hygrometric elements

Info

Publication number
GB867046A
GB867046A GB2782258A GB2782258A GB867046A GB 867046 A GB867046 A GB 867046A GB 2782258 A GB2782258 A GB 2782258A GB 2782258 A GB2782258 A GB 2782258A GB 867046 A GB867046 A GB 867046A
Authority
GB
United Kingdom
Prior art keywords
wire
aluminium
hygrometric
electrode
elements
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
GB2782258A
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 GB2782258A priority Critical patent/GB867046A/en
Priority to US99308A priority patent/US3121853A/en
Publication of GB867046A publication Critical patent/GB867046A/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
    • G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid
    • G01N27/121—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid for determining moisture content, e.g. humidity, of the fluid
    • 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

Abstract

867,046. Hygrometric elements. JASON, A. C., and LEES, A. Aug. 31, 1959 [Aug. 29, 1958], No. 27822/58. Class 40 (1). A method of manufacture of hygrometric elements in which a rod such as that described in Specification 732,969 using an outer metal electrode on aluminium oxide produced by electrolytic oxidation of the base aluminium wire electrode by sulphuric acid, is stored under certain conditions for three to six months and then is carefully dipped in a saturated large or heavy anion solution, such as sodium tungstate. This may then be cycled between different humidities until its physical characteristics are stable. The embodiment shown in Fig. 1 consists of aluminium oxide 12 on aluminium wire 11 overlapped at one end by an epoxy resin or other insulating sleeve 13 on to which is placed an aluminium conducting sleeve 14 which connects the porous outer electrode 17 to a connecting- wire 15 both being superimposed but insulated from each other. An alternative construction can be used in which the porous electrode is applied before the conducting sleeve which overlaps it and connects it to the wire, Fig. 2 (not shown). Specification 805,051 also is referred to.
GB2782258A 1958-08-29 1958-08-29 Improvements in and relating to hygrometric elements Expired GB867046A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2782258A GB867046A (en) 1958-08-29 1958-08-29 Improvements in and relating to hygrometric elements
US99308A US3121853A (en) 1958-08-29 1961-03-29 Hygrometric elements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2782258A GB867046A (en) 1958-08-29 1958-08-29 Improvements in and relating to hygrometric elements

Publications (1)

Publication Number Publication Date
GB867046A true GB867046A (en) 1961-05-03

Family

ID=10265861

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2782258A Expired GB867046A (en) 1958-08-29 1958-08-29 Improvements in and relating to hygrometric elements

Country Status (1)

Country Link
GB (1) GB867046A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2000292A (en) * 1977-06-06 1979-01-04 Matsushita Electric Ind Co Ltd Humidity sensor of capacitance change type
DE3024297A1 (en) * 1980-06-27 1982-01-21 Endress U. Hauser Gmbh U. Co, 7867 Maulburg HUMIDITY PROBE AND METHOD FOR THE PRODUCTION THEREOF

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2000292A (en) * 1977-06-06 1979-01-04 Matsushita Electric Ind Co Ltd Humidity sensor of capacitance change type
GB2000292B (en) * 1977-06-06 1982-03-17 Matsushita Electric Ind Co Ltd Humidity sensor of capacitance change type
DE3024297A1 (en) * 1980-06-27 1982-01-21 Endress U. Hauser Gmbh U. Co, 7867 Maulburg HUMIDITY PROBE AND METHOD FOR THE PRODUCTION THEREOF

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