GB2170004B - Dew point sensor - Google Patents

Dew point sensor

Info

Publication number
GB2170004B
GB2170004B GB8530134A GB8530134A GB2170004B GB 2170004 B GB2170004 B GB 2170004B GB 8530134 A GB8530134 A GB 8530134A GB 8530134 A GB8530134 A GB 8530134A GB 2170004 B GB2170004 B GB 2170004B
Authority
GB
United Kingdom
Prior art keywords
dew point
point sensor
sensor
dew
point
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
GB8530134A
Other versions
GB8530134D0 (en
GB2170004A (en
Inventor
Ullrich Demisch
Jorg Plamper
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.)
Testoterm Messtechnik Co GmbH
Original Assignee
Testoterm Messtechnik Co GmbH
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 Testoterm Messtechnik Co GmbH filed Critical Testoterm Messtechnik Co GmbH
Publication of GB8530134D0 publication Critical patent/GB8530134D0/en
Publication of GB2170004A publication Critical patent/GB2170004A/en
Application granted granted Critical
Publication of GB2170004B publication Critical patent/GB2170004B/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
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/85—Investigating moving fluids or granular solids
    • G01N21/8507—Probe photometers, i.e. with optical measuring part dipped into fluid sample
    • 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
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
    • G01N21/43—Refractivity; Phase-affecting properties, e.g. optical path length by measuring critical angle

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 Analysing Materials By Optical Means (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)
GB8530134A 1984-12-08 1985-12-06 Dew point sensor Expired GB2170004B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3444830 1984-12-08

Publications (3)

Publication Number Publication Date
GB8530134D0 GB8530134D0 (en) 1986-01-15
GB2170004A GB2170004A (en) 1986-07-23
GB2170004B true GB2170004B (en) 1989-05-10

Family

ID=6252250

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8530134A Expired GB2170004B (en) 1984-12-08 1985-12-06 Dew point sensor

Country Status (3)

Country Link
JP (1) JPS61198040A (en)
FR (1) FR2574552B1 (en)
GB (1) GB2170004B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6228640A (en) * 1985-07-31 1987-02-06 Tomoo Matsuo Damping light quantity sensor
JPS6283641A (en) * 1985-10-08 1987-04-17 Sharp Corp Sensor element
GB9111776D0 (en) * 1991-05-31 1991-07-24 De Beers Ind Diamond Determination of the condition of or change in state of an environment
JP2004108940A (en) * 2002-09-18 2004-04-08 National Institute Of Advanced Industrial & Technology Dew point measuring device utilizing optical waveguide

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1289146A (en) * 1969-10-07 1972-09-13
GB1463910A (en) * 1975-08-21 1977-02-09 Standard Telephones Cables Ltd Liquid level sensor
US4311048A (en) * 1980-02-21 1982-01-19 Trw, Inc. Liquid level sensing means
GB2105034A (en) * 1981-09-04 1983-03-16 Westinghouse Electric Corp Fiber optic impurity detector
DE3217168A1 (en) * 1982-05-07 1983-11-17 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 8000 München Fibre-optic refractometer
EP0176194A1 (en) * 1984-09-11 1986-04-02 LUCAS INDUSTRIES public limited company Liquid level indicator

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2733594A (en) * 1956-02-07 dew-point detecting device
US3528278A (en) * 1967-09-05 1970-09-15 Technology Inc Method and apparatus for determining the presence of vapor in a gas
FR2058851A5 (en) * 1969-09-30 1971-05-28 Amelkin Anatoly
JPS4934850U (en) * 1972-06-24 1974-03-27
US3856404A (en) * 1973-06-06 1974-12-24 Phys Chem Res Corp Method and apparatus for measuring vapor pressure
ZA745115B (en) * 1973-09-07 1975-08-27 Clupak Inc Apparatus for compacting a nonwoven fabric to improve hand and drape
JPS59137844A (en) * 1983-01-27 1984-08-08 Showa Electric Wire & Cable Co Ltd Humidity sensor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1289146A (en) * 1969-10-07 1972-09-13
GB1463910A (en) * 1975-08-21 1977-02-09 Standard Telephones Cables Ltd Liquid level sensor
US4311048A (en) * 1980-02-21 1982-01-19 Trw, Inc. Liquid level sensing means
GB2105034A (en) * 1981-09-04 1983-03-16 Westinghouse Electric Corp Fiber optic impurity detector
DE3217168A1 (en) * 1982-05-07 1983-11-17 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 8000 München Fibre-optic refractometer
EP0176194A1 (en) * 1984-09-11 1986-04-02 LUCAS INDUSTRIES public limited company Liquid level indicator

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"Conference Proceedings OfS 84", 2nd. International Conference o *
Stuttgart, 5-7 September 1984. *

Also Published As

Publication number Publication date
FR2574552B1 (en) 1989-01-06
FR2574552A1 (en) 1986-06-13
GB8530134D0 (en) 1986-01-15
JPS61198040A (en) 1986-09-02
GB2170004A (en) 1986-07-23

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee