GB2020826A - Improvements in and Relating to the Measurement of the Moisture Content of Air - Google Patents

Improvements in and Relating to the Measurement of the Moisture Content of Air

Info

Publication number
GB2020826A
GB2020826A GB7920809A GB7920809A GB2020826A GB 2020826 A GB2020826 A GB 2020826A GB 7920809 A GB7920809 A GB 7920809A GB 7920809 A GB7920809 A GB 7920809A GB 2020826 A GB2020826 A GB 2020826A
Authority
GB
United Kingdom
Prior art keywords
air
thermometer
bulb temperature
moisture content
relating
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.)
Withdrawn
Application number
GB7920809A
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.)
Wira and Mather and Platt Ltd
Original Assignee
Wira and Mather and Platt 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 Wira and Mather and Platt Ltd filed Critical Wira and Mather and Platt Ltd
Priority to GB7920809A priority Critical patent/GB2020826A/en
Publication of GB2020826A publication Critical patent/GB2020826A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N25/00—Investigating or analyzing materials by the use of thermal means
    • G01N25/56—Investigating or analyzing materials by the use of thermal means by investigating moisture content
    • G01N25/62—Investigating or analyzing materials by the use of thermal means by investigating moisture content by psychrometric means, e.g. wet-and-dry bulb thermometers
    • G01N25/64—Investigating or analyzing materials by the use of thermal means by investigating moisture content by psychrometric means, e.g. wet-and-dry bulb thermometers using electric temperature-responsive elements

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)

Abstract

A method is described for producing a signal dependent on variations in the moisture content of air simply and without reference to hygrometric tables. The method consists of maintaining the dry bulb temperature of the air at a substantially constant value not below the dew point and measuring variations in the wet bulb temperature of the air by means of a wet bulb thermometer 14, e.g. a thermocouple. The constant dry bulb temperature may be maintained by an enclosed water bath 12 through which the air duct 8 passes. The evaporating surface of the thermocouple includes a microporous metal known as foam metal (U.K. Spec No. 1464302) which is also used in a guard ring 20 surrounding the thermometer. The ring and thermometer are intermittently flushed with water via valve 22, pipe 24 and nozzles 26. <IMAGE>
GB7920809A 1978-03-17 1979-06-14 Improvements in and Relating to the Measurement of the Moisture Content of Air Withdrawn GB2020826A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7920809A GB2020826A (en) 1978-03-17 1979-06-14 Improvements in and Relating to the Measurement of the Moisture Content of Air

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1062078 1978-03-17
GB7920809A GB2020826A (en) 1978-03-17 1979-06-14 Improvements in and Relating to the Measurement of the Moisture Content of Air

Publications (1)

Publication Number Publication Date
GB2020826A true GB2020826A (en) 1979-11-21

Family

ID=26247649

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7920809A Withdrawn GB2020826A (en) 1978-03-17 1979-06-14 Improvements in and Relating to the Measurement of the Moisture Content of Air

Country Status (1)

Country Link
GB (1) GB2020826A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2300266A (en) * 1995-04-28 1996-10-30 Royal Doulton High temperature atmosphere humidity measurement
FR2970335A1 (en) * 2011-01-10 2012-07-13 Terreal Method for measuring humidity of hot air, involves passing hot air in heat exchanger to reduce temperature of air in vicinity of fifty degree Celsius, passing cooled hot air in measuring tube, and measuring humidity of hot air by probe

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2300266A (en) * 1995-04-28 1996-10-30 Royal Doulton High temperature atmosphere humidity measurement
GB2300266B (en) * 1995-04-28 1999-01-06 Royal Doulton Method and apparatus for the measurement of humidity
FR2970335A1 (en) * 2011-01-10 2012-07-13 Terreal Method for measuring humidity of hot air, involves passing hot air in heat exchanger to reduce temperature of air in vicinity of fifty degree Celsius, passing cooled hot air in measuring tube, and measuring humidity of hot air by probe

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)