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SE0001732L - Gas-sensitive sensor unit - Google Patents

Gas-sensitive sensor unit

Info

Publication number
SE0001732L
SE0001732L SE0001732A SE0001732A SE0001732L SE 0001732 L SE0001732 L SE 0001732L SE 0001732 A SE0001732 A SE 0001732A SE 0001732 A SE0001732 A SE 0001732A SE 0001732 L SE0001732 L SE 0001732L
Authority
SE
Sweden
Prior art keywords
environment
gas
sensor unit
sensor
measurement values
Prior art date
Application number
SE0001732A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE0001732D0 (en
Inventor
Mats Wallin
Hans Martin
Original Assignee
Medair Ab
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 Medair Ab filed Critical Medair Ab
Priority to SE0001732A priority Critical patent/SE0001732L/en
Publication of SE0001732D0 publication Critical patent/SE0001732D0/en
Priority to AU2001258972A priority patent/AU2001258972A1/en
Priority to PCT/SE2001/001021 priority patent/WO2001086260A1/en
Publication of SE0001732L publication Critical patent/SE0001732L/en

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/12—Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
    • 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
    • G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Emergency Management (AREA)
  • Business, Economics & Management (AREA)
  • Environmental & Geological Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

The invention relates to a gas-adapted sensor unit (1) for determining the presence of and evaluating the concentration of a gas or gas mixture that induces an anaesthetic and/or analgesic effect. Means are provided for comparing sensor or sensor-unit output signals and/or measurement values formed therefrom with pre-determined threshold values so as to enable an emergency-related alarm signal to be set via light generating devices (1b) in the case of excessively high measurement values. One or more circuits that form averages or that integrate instant measurement values associated with the sensor unit are adapted to establish, over a pre-determined long time duration, an environment-related value that corresponds to the time dependent values of the output signal. When the environment-related value (1a'') exceeds a pre-determined environment-related threshold value, there is generated an environment-related alarm signal through the medium of a further circuit and through the medium of a light generating device (1b). The sensor unit (1) has external measurements that conform to or are smaller than the measurements valid for a pocket-sized unit. The gas mixture passes a measuring cell adapted for spectral analysis, by convection.
SE0001732A 2000-05-10 2000-05-10 Gas-sensitive sensor unit SE0001732L (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE0001732A SE0001732L (en) 2000-05-10 2000-05-10 Gas-sensitive sensor unit
AU2001258972A AU2001258972A1 (en) 2000-05-10 2001-05-10 Portable gas sensor based on spectral analysis
PCT/SE2001/001021 WO2001086260A1 (en) 2000-05-10 2001-05-10 Portable gas sensor based on spectral analysis

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0001732A SE0001732L (en) 2000-05-10 2000-05-10 Gas-sensitive sensor unit

Publications (2)

Publication Number Publication Date
SE0001732D0 SE0001732D0 (en) 2000-05-10
SE0001732L true SE0001732L (en) 2001-11-11

Family

ID=20279625

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0001732A SE0001732L (en) 2000-05-10 2000-05-10 Gas-sensitive sensor unit

Country Status (3)

Country Link
AU (1) AU2001258972A1 (en)
SE (1) SE0001732L (en)
WO (1) WO2001086260A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030080866A1 (en) * 2001-10-26 2003-05-01 Koninklijke Philips Electronics N.V. Doubled sided pen module
US9001335B2 (en) 2005-09-30 2015-04-07 Mks Instruments Inc. Method and apparatus for siloxane measurements in a biogas
US7372573B2 (en) * 2005-09-30 2008-05-13 Mks Instruments, Inc. Multigas monitoring and detection system
US8537020B2 (en) * 2008-12-23 2013-09-17 Honeywell International Inc. Visual indicator of gas sensor impairment
US10659548B2 (en) 2018-07-23 2020-05-19 NRS Systems Invocation devices in an organization information distribution system
SE546782C2 (en) * 2021-03-17 2025-02-18 Medclair AB A nitrous oxide detector

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4297689A (en) * 1980-01-08 1981-10-27 Interscan Corporation Personnel-carried dosimeter
US5386115A (en) * 1993-09-22 1995-01-31 Westinghouse Electric Corporation Solid state micro-machined mass spectrograph universal gas detection sensor
FR2712390B1 (en) * 1993-11-12 1996-02-09 Saphir Gas detection device by infrared absorption.
DE29505014U1 (en) * 1995-03-24 1996-08-01 Mußeleck, Jörg, Dipl.-Ing., 21037 Hamburg Low cost multi-channel gas analyzer
JP3051687U (en) * 1997-11-14 1998-09-02 理研計器株式会社 Portable gas detector
DE19830019A1 (en) * 1998-07-04 2000-01-13 Wwu Wissenschaftliche Werkstat Monitor to register the concentration of nitrous oxide gas present in an operating theater
US6096560A (en) * 1998-11-24 2000-08-01 Quantum Group, Inc. Method and apparatus for determining the concentration of a target gas using an optical gas sensor system

Also Published As

Publication number Publication date
AU2001258972A1 (en) 2001-11-20
WO2001086260A1 (en) 2001-11-15
SE0001732D0 (en) 2000-05-10

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Legal Events

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NAV Patent application has lapsed