GB930737A - Sweat rate indicator - Google Patents

Sweat rate indicator

Info

Publication number
GB930737A
GB930737A GB3005960A GB3005960A GB930737A GB 930737 A GB930737 A GB 930737A GB 3005960 A GB3005960 A GB 3005960A GB 3005960 A GB3005960 A GB 3005960A GB 930737 A GB930737 A GB 930737A
Authority
GB
United Kingdom
Prior art keywords
gas
rate
flow
sensitive resistor
humidity sensitive
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
GB3005960A
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.)
Minister of National Defence of Canada
UK Secretary of State for Defence
Original Assignee
Minister of National Defence of Canada
UK Secretary of State for Defence
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 Minister of National Defence of Canada, UK Secretary of State for Defence filed Critical Minister of National Defence of Canada
Publication of GB930737A publication Critical patent/GB930737A/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
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/42—Detecting, measuring or recording for evaluating the gastrointestinal, the endocrine or the exocrine systems
    • A61B5/4261—Evaluating exocrine secretion production
    • A61B5/4266—Evaluating exocrine secretion production sweat secretion

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Pathology (AREA)
  • Physics & Mathematics (AREA)
  • Endocrinology (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Gastroenterology & Hepatology (AREA)
  • Physiology (AREA)
  • Biophysics (AREA)
  • Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Glass Compositions (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

930,737. Determining moisture content. MINISTER OF NATIONAL DEFENCE OF HER MAJESTY'S CANADIAN GOVERNMENT. Aug. 31, 1960 [Sept. 2, 1959], No. 30059/60. Class 37. [Also in Croup XXXVIII] A sweating rate indicator comprises a box 1, Fig. 1, open on one side and provided with a resilient gasket member, not shown, in order that it may be placed on the body surface of an animal, the box being provided with a humiditysensitive resistor 2 consisting of a plastic sheet provided with inter-digitated electrodes 3 and 4, together with means for establishing a flow of gas through the box at a controlled rate. In operation the box is applied to the body surface of the animal and the rate of flow of the gas adjusted to give a predetermined resistance of the humidity sensitive resistor when the rate of flow of gas is proportional to the sweating rate of the animal. The rate of flow of gas may be adjusted manually, or automatically by connecting the humidity sensitive resistor in a bridge circuit and using the unbalance voltage of the bridge circuit to drive a servomotor controlling a valve in the gas supply. Fig. 5 shows an alternative form of humidity sensitive resistor in which the distance between the electrodes is variable in which case the flow of gas through the apparatus may be maintained constant and the spacing between the electrodes adjusted for the predetermined resistance value when the spacing between the electrodes, indicated on scale 28, will be a function of the sweating rate. Apparatus for calibrating the sweating rate indicator.-Fig. 4 comprises a gas flow control valve 13, drier 14 containing e.g. cone. H 2 SO 4 or silica gel, the enclosure 1 containing the humidity sensitive resistor, a rotameter for indicating the gas flow, and a moisture collecting device 16 arranged on the arm of a balance 18 in order that the rate at which moisture is withdrawn from the enclosure 1 may be measured. Ohmmeter 19 indicates the resistance of the humidity sensitive resistor.
GB3005960A 1959-09-02 1960-08-31 Sweat rate indicator Expired GB930737A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA781799 1959-09-02

Publications (1)

Publication Number Publication Date
GB930737A true GB930737A (en) 1963-07-10

Family

ID=4141128

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3005960A Expired GB930737A (en) 1959-09-02 1960-08-31 Sweat rate indicator

Country Status (1)

Country Link
GB (1) GB930737A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53157789U (en) * 1977-05-17 1978-12-11
EP0340774A2 (en) * 1988-05-04 1989-11-08 Thomas Höll Method and means to measure the electrodermal reactions
EP1283661A3 (en) * 2001-08-07 2005-08-17 Samsung Electronics Co., Ltd. Humidity sensor and microwave oven including a humidity sensor
WO2007080381A1 (en) * 2006-01-13 2007-07-19 Anaxsys Technology Limited Gas sensor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53157789U (en) * 1977-05-17 1978-12-11
EP0340774A2 (en) * 1988-05-04 1989-11-08 Thomas Höll Method and means to measure the electrodermal reactions
EP0340774A3 (en) * 1988-05-04 1990-09-26 Thomas Höll Method and means to measure the electrodermal reactions
EP1283661A3 (en) * 2001-08-07 2005-08-17 Samsung Electronics Co., Ltd. Humidity sensor and microwave oven including a humidity sensor
WO2007080381A1 (en) * 2006-01-13 2007-07-19 Anaxsys Technology Limited Gas sensor

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