DE3509532C2 - - Google Patents

Info

Publication number
DE3509532C2
DE3509532C2 DE19853509532 DE3509532A DE3509532C2 DE 3509532 C2 DE3509532 C2 DE 3509532C2 DE 19853509532 DE19853509532 DE 19853509532 DE 3509532 A DE3509532 A DE 3509532A DE 3509532 C2 DE3509532 C2 DE 3509532C2
Authority
DE
Germany
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
DE19853509532
Other versions
DE3509532A1 (en
Inventor
Walter Dipl.-Ing. 6239 Kriftel De Fabinski
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.)
Hartmann and Braun AG
Original Assignee
Hartmann and Braun AG
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 Hartmann and Braun AG filed Critical Hartmann and Braun AG
Priority to DE19853509532 priority Critical patent/DE3509532C2/de
Publication of DE3509532A1 publication Critical patent/DE3509532A1/en
Application granted granted Critical
Publication of DE3509532C2 publication Critical patent/DE3509532C2/de
Application status is Expired legal-status Critical

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
    • G01N21/17Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/1702Systems in which incident light is modified in accordance with the properties of the material investigated with opto-acoustic detection, e.g. for gases or analysing solids
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
    • G01N21/01Arrangements or apparatus for facilitating the optical investigation
    • G01N21/03Cuvette constructions
    • G01N2021/0385Diffusing membrane; Semipermeable membrane
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
    • G01N21/17Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/1702Systems in which incident light is modified in accordance with the properties of the material investigated with opto-acoustic detection, e.g. for gases or analysing solids
    • G01N2021/1704Systems in which incident light is modified in accordance with the properties of the material investigated with opto-acoustic detection, e.g. for gases or analysing solids in gases
DE19853509532 1985-03-16 1985-03-16 Expired DE3509532C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19853509532 DE3509532C2 (en) 1985-03-16 1985-03-16

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19853509532 DE3509532C2 (en) 1985-03-16 1985-03-16

Publications (2)

Publication Number Publication Date
DE3509532A1 DE3509532A1 (en) 1986-09-18
DE3509532C2 true DE3509532C2 (en) 1987-04-16

Family

ID=6265431

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19853509532 Expired DE3509532C2 (en) 1985-03-16 1985-03-16

Country Status (1)

Country Link
DE (1) DE3509532C2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4214572A1 (en) * 1992-05-03 1993-11-04 Roland Dr Ing Emmrich Hollow ceramic body for use in spectroscopic analysis of corrosive fluids - having sapphire windows for transmitting light sealed onto ceramic body by green sintered ceramic foil
DE19742053C1 (en) * 1997-09-24 1999-01-28 Draeger Sicherheitstech Gmbh Infrared absorption measuring device for gas analysis

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4866681A (en) * 1988-03-09 1989-09-12 Mine Safety Appliances Company Photo-acoustic detector
WO1995011444A1 (en) * 1993-10-20 1995-04-27 Roland Emmrich Hollow vacuum-tight ceramic shaped body
ES2221925T3 (en) * 1995-09-04 2005-01-16 Siemens Building Technologies Ag Sensor photoacoustic gas and use.
US5933245A (en) * 1996-12-31 1999-08-03 Honeywell Inc. Photoacoustic device and process for multi-gas sensing

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD112174A1 (en) * 1974-05-16 1975-03-20
JPS5748732B2 (en) * 1977-11-17 1982-10-18
WO1985003574A1 (en) * 1984-02-07 1985-08-15 Oskar Oehler Device for the photoacoustic detection of gas
DE3426472C2 (en) * 1984-07-18 1987-05-14 Hartmann & Braun Ag, 6000 Frankfurt, De

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4214572A1 (en) * 1992-05-03 1993-11-04 Roland Dr Ing Emmrich Hollow ceramic body for use in spectroscopic analysis of corrosive fluids - having sapphire windows for transmitting light sealed onto ceramic body by green sintered ceramic foil
DE19742053C1 (en) * 1997-09-24 1999-01-28 Draeger Sicherheitstech Gmbh Infrared absorption measuring device for gas analysis
US6075246A (en) * 1997-09-24 2000-06-13 Drager Sicherheitstechnik Gmbh Infrared measuring arrangement with expanded measuring range

Also Published As

Publication number Publication date
DE3509532A1 (en) 1986-09-18

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8363 Opposition against the patent
8365 Fully valid after opposition proceedings
8380 Miscellaneous part iii

Free format text: SPALTE 1, ZEILE 33 "POLYRINYLFLOURID" AENDERN IN "POLYRINYLIDENFLOURID"

8339 Ceased/non-payment of the annual fee