GB2334097C - Method and apparatus to detect the presence of water on a surface - Google Patents

Method and apparatus to detect the presence of water on a surface

Info

Publication number
GB2334097C
GB2334097C GB9901121A GB9901121A GB2334097C GB 2334097 C GB2334097 C GB 2334097C GB 9901121 A GB9901121 A GB 9901121A GB 9901121 A GB9901121 A GB 9901121A GB 2334097 C GB2334097 C GB 2334097C
Authority
GB
United Kingdom
Prior art keywords
detect
water
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 - Fee Related
Application number
GB9901121A
Other versions
GB9901121D0 (en
GB2334097B (en
GB2334097A (en
Inventor
Stuart Charles Murray
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.)
Lattice Intellectual Property Ltd
Transco PLC
BG Transco PLC
British Gas PLC
Original Assignee
Lattice Intellectual Property Ltd
Transco PLC
BG Transco PLC
British Gas PLC
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
Priority claimed from GBGB9802473.0A external-priority patent/GB9802473D0/en
Application filed by Lattice Intellectual Property Ltd, Transco PLC, BG Transco PLC, British Gas PLC filed Critical Lattice Intellectual Property Ltd
Priority to GB9901121A priority Critical patent/GB2334097C/en
Publication of GB9901121D0 publication Critical patent/GB9901121D0/en
Publication of GB2334097A publication Critical patent/GB2334097A/en
Publication of GB2334097B publication Critical patent/GB2334097B/en
Application granted granted Critical
Publication of GB2334097C publication Critical patent/GB2334097C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/28—Investigating the spectrum
    • G01J3/42—Absorption spectrometry; Double beam spectrometry; Flicker spectrometry; Reflection spectrometry
    • G01J3/427—Dual wavelengths spectrometry
    • 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
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
    • G01N21/3554—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for determining moisture content

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General 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)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
GB9901121A 1998-02-06 1999-01-19 Method and apparatus to detect the presence of water on a surface Expired - Fee Related GB2334097C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9901121A GB2334097C (en) 1998-02-06 1999-01-19 Method and apparatus to detect the presence of water on a surface

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9802473.0A GB9802473D0 (en) 1998-02-06 1998-02-06 Method and apparatus to detect the presence of water on a surface
GB9901121A GB2334097C (en) 1998-02-06 1999-01-19 Method and apparatus to detect the presence of water on a surface

Publications (4)

Publication Number Publication Date
GB9901121D0 GB9901121D0 (en) 1999-03-10
GB2334097A GB2334097A (en) 1999-08-11
GB2334097B GB2334097B (en) 2002-08-07
GB2334097C true GB2334097C (en) 2005-09-14

Family

ID=26313063

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9901121A Expired - Fee Related GB2334097C (en) 1998-02-06 1999-01-19 Method and apparatus to detect the presence of water on a surface

Country Status (1)

Country Link
GB (1) GB2334097C (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004083833A1 (en) * 2003-03-14 2004-09-30 Baker Hughes Incorporated A method and apparatus for downhole quantification of methane using near infrared spectroscopy
US7173239B2 (en) 2003-03-14 2007-02-06 Baker Hughes Incorporated Method and apparatus for downhole quantification of methane using near infrared spectroscopy
US20090015819A1 (en) * 2003-12-22 2009-01-15 Koninklijke Philips Electronics Nv Optical analysis system, blood analysis system and method of determining an amplitude of a principal component

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1237547A (en) * 1968-08-07 1971-06-30 Standard Telephones Cables Ltd Differential spectral absorption analyser
US3614450A (en) * 1969-02-17 1971-10-19 Measurex Corp Apparatus for measuring the amount of a substance that is associated with a base material
CA1000406A (en) * 1972-10-27 1976-11-23 Measurex Corporation Moisture gauge with opacity type compensation
US4052615A (en) * 1976-07-30 1977-10-04 Industrial Nucleonics Corporation Spherical cavity method and apparatus for measuring a sheet material property using infrared radiation
US4171918A (en) * 1976-12-27 1979-10-23 Sentrol Systems Ltd. Infrared moisture measuring apparatus
GB2008745A (en) * 1977-11-03 1979-06-06 Anacon Instr Ltd Spectrophotometer
JPH03115838A (en) * 1989-09-29 1991-05-16 Kawasaki Steel Corp Moisture measuring method by use of infrared ray
DE4008280A1 (en) * 1990-03-15 1991-09-19 Tzn Forschung & Entwicklung Indicating ice etc. on road surface - using IR detector and halogen lamp source with beam modulator and narrow bandpass filter
GB2303444B (en) * 1995-07-13 1999-03-10 Protimeter Plc Method of and apparatus for detecting moisture
GB9624035D0 (en) * 1996-11-19 1997-01-08 Infrared Eng Infrared measuring gauge

Also Published As

Publication number Publication date
GB9901121D0 (en) 1999-03-10
GB2334097B (en) 2002-08-07
GB2334097A (en) 1999-08-11

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
773H Revocation action is not pursued (sect. 73(2)/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20070119