HK104695A - Method for determining the dew point of a moist gas and apparatus for carrying out the method - Google Patents

Method for determining the dew point of a moist gas and apparatus for carrying out the method

Info

Publication number
HK104695A
HK104695A HK104695A HK104695A HK104695A HK 104695 A HK104695 A HK 104695A HK 104695 A HK104695 A HK 104695A HK 104695 A HK104695 A HK 104695A HK 104695 A HK104695 A HK 104695A
Authority
HK
Hong Kong
Prior art keywords
dew
gas
point
determining
proposed
Prior art date
Application number
HK104695A
Inventor
Arthur Mutter
Original Assignee
Arthur Mutter
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 Arthur Mutter filed Critical Arthur Mutter
Publication of HK104695A publication Critical patent/HK104695A/en

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
    • G01N25/66—Investigating or analyzing materials by the use of thermal means by investigating moisture content by investigating dew-point
    • G01N25/68—Investigating or analyzing materials by the use of thermal means by investigating moisture content by investigating dew-point by varying the temperature of a condensing surface

Landscapes

  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

A novel method is proposed for determining the dew point of a gas by means of a light ray reflected at a dew-point mirror (3). For measurements of fairly low dew points, in particular at temperatures of -50 DEG C to -95 DEG C, the dew-point mirror (3) is first exposed for a short time to a gas having a high water content. This achieves the result that an initial, fairly thick dew layer which appreciably shortens the measurement time is built up on the dew-point mirror (3). To carry out this method, a dew-point measuring system is proposed which has a gas valve (24), an injector pump (25) and a moistening unit (26) in a secondary circuit (23). A hygroscopic polyamide hose which ensures maintenance-free moistening of the gas by water molecules diffused into it has proved particularly advantageous. <IMAGE>
HK104695A 1988-06-03 1995-06-29 Method for determining the dew point of a moist gas and apparatus for carrying out the method HK104695A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH2130/88A CH676152A5 (en) 1988-06-03 1988-06-03

Publications (1)

Publication Number Publication Date
HK104695A true HK104695A (en) 1995-07-07

Family

ID=4226582

Family Applications (1)

Application Number Title Priority Date Filing Date
HK104695A HK104695A (en) 1988-06-03 1995-06-29 Method for determining the dew point of a moist gas and apparatus for carrying out the method

Country Status (6)

Country Link
EP (1) EP0345215B1 (en)
JP (1) JP2780045B2 (en)
AT (1) ATE112628T1 (en)
CH (1) CH676152A5 (en)
DE (1) DE58908467D1 (en)
HK (1) HK104695A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5470154A (en) * 1991-04-18 1995-11-28 Osaka Sanso Kogyo Ltd. Method of cleaning the reflector mirror in an optical dew point meter and an optical dew point meter equipped with a cleaning device
EP0535248B1 (en) * 1991-04-18 1999-06-30 Osaka Sanso Kogyo Limited Method of measuring the dew point and/or frost point of a gas having low water content and apparatus therefor
US5482371A (en) * 1991-04-18 1996-01-09 Osaka Sanso Kogyo Ltd. Method and apparatus for measuring the dew point and/or frost point of a gas having low water content
IT1255296B (en) * 1992-05-26 1995-10-26 Getters Spa EQUIPMENT TO INTRODUCE IN A CONTROLLED WAY MINIMUM QUANTITIES OF HUMIDITY IN A DRY GAS FLOW
JP4354860B2 (en) * 2004-03-30 2009-10-28 株式会社山武 Moisture detector
WO2006132224A1 (en) * 2005-06-09 2006-12-14 Tokyo University Of Agriculture And Technology Reflectivity variable sensor, optical measuring apparatus, reflectivity variable sensor manufacturing method, self-organized fine particle single layer film for reflectivity variable sensor, self-organized fine particle single layer film, and method for manufacturing such single layer films
DE102016120423B4 (en) * 2016-10-26 2018-12-27 Pro-Chem Analytik GmbH & Co. KG Device for optical dew point measurement
WO2020070896A1 (en) * 2018-10-05 2020-04-09 明星電気株式会社 Mirror surface cooling-type dew point meter for radiosondes

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2893237A (en) * 1955-05-11 1959-07-07 Surface Combustion Corp Dew point indicator
US3112648A (en) * 1961-12-11 1963-12-03 George A Dulk Peltier dew point hygrometer
US4083224A (en) * 1975-09-29 1978-04-11 The University Of Sydney Phase transition detector

Also Published As

Publication number Publication date
CH676152A5 (en) 1990-12-14
ATE112628T1 (en) 1994-10-15
EP0345215A2 (en) 1989-12-06
JP2780045B2 (en) 1998-07-23
JPH0227247A (en) 1990-01-30
EP0345215B1 (en) 1994-10-05
EP0345215A3 (en) 1991-04-03
DE58908467D1 (en) 1994-11-10

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Legal Events

Date Code Title Description
ARG Restoration of standard patent granted

Effective date: 20040419

PF Patent in force