FR2284109A1 - Perfectionnements aux filtres pour detecteurs de gaz - Google Patents

Perfectionnements aux filtres pour detecteurs de gaz

Info

Publication number
FR2284109A1
FR2284109A1 FR7527031A FR7527031A FR2284109A1 FR 2284109 A1 FR2284109 A1 FR 2284109A1 FR 7527031 A FR7527031 A FR 7527031A FR 7527031 A FR7527031 A FR 7527031A FR 2284109 A1 FR2284109 A1 FR 2284109A1
Authority
FR
France
Prior art keywords
filters
gas detectors
detectors
gas
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.)
Withdrawn
Application number
FR7527031A
Other languages
English (en)
Inventor
John Edward Harries
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.)
UK Secretary of State for Industry
Original Assignee
UK Secretary of State for Industry
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 UK Secretary of State for Industry filed Critical UK Secretary of State for Industry
Publication of FR2284109A1 publication Critical patent/FR2284109A1/fr
Withdrawn legal-status Critical Current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
    • G01N21/17—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
    • G01N21/45—Refractivity; Phase-affecting properties, e.g. optical path length using interferometric methods; using Schlieren methods

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)
FR7527031A 1974-09-03 1975-09-03 Perfectionnements aux filtres pour detecteurs de gaz Withdrawn FR2284109A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB38485/74A GB1501389A (en) 1974-09-03 1974-09-03 Filters for gas detectors

Publications (1)

Publication Number Publication Date
FR2284109A1 true FR2284109A1 (fr) 1976-04-02

Family

ID=10403771

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7527031A Withdrawn FR2284109A1 (fr) 1974-09-03 1975-09-03 Perfectionnements aux filtres pour detecteurs de gaz

Country Status (4)

Country Link
US (1) US4025792A (fr)
DE (1) DE2539248A1 (fr)
FR (1) FR2284109A1 (fr)
GB (1) GB1501389A (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6111641A (en) * 1998-03-23 2000-08-29 The United States Of America As Represented By The Secretary Of The Air Force Nonlinear spectrophotometer
US20060291022A1 (en) * 2005-05-26 2006-12-28 Inphase Technologies, Inc. Optical delay line in holographic drive
US8092030B2 (en) 2006-04-12 2012-01-10 Plx, Inc. Mount for an optical structure and method of mounting an optical structure using such mount
US9798051B2 (en) 2011-02-28 2017-10-24 Plx, Inc. Mount for an optical structure having a grooved protruding member and method of mounting an optical structure using such mount
US20130135622A1 (en) 2011-11-23 2013-05-30 Ftrx Llc Quasi-translator, fourier modulator, fourier spectrometer, motion control system and methods for controlling same, and signal processor circuit
US9013814B2 (en) 2012-07-27 2015-04-21 Plx, Inc. Interferometer and optical assembly having beamsplitter securing apparatus and method of mounting same
US9377600B2 (en) 2013-02-21 2016-06-28 Plx, Inc. Mounts for an optical structure having a grooved protruding member with a damping ring disposed in or on the groove and methods of mounting an optical structure using such mounts

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3381134A (en) * 1964-10-05 1968-04-30 Philip C. Wolf Mass flow indicating means including an interferometer system
US3723731A (en) * 1971-03-18 1973-03-27 Environmental Res & Tech Absorption spectroscopy

Also Published As

Publication number Publication date
GB1501389A (en) 1978-02-15
DE2539248A1 (de) 1976-03-11
US4025792A (en) 1977-05-24

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Legal Events

Date Code Title Description
ST Notification of lapse