GB1200038A - Apparatus and method for measuring the opacity of gases - Google Patents

Apparatus and method for measuring the opacity of gases

Info

Publication number
GB1200038A
GB1200038A GB4286368A GB4286368A GB1200038A GB 1200038 A GB1200038 A GB 1200038A GB 4286368 A GB4286368 A GB 4286368A GB 4286368 A GB4286368 A GB 4286368A GB 1200038 A GB1200038 A GB 1200038A
Authority
GB
United Kingdom
Prior art keywords
mirror
apertures
light
measuring
venturi
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
GB4286368A
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.)
SnamProgetti SpA
Original Assignee
SnamProgetti SpA
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 SnamProgetti SpA filed Critical SnamProgetti SpA
Publication of GB1200038A publication Critical patent/GB1200038A/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
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
    • G01N21/53—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke
    • G01N21/534—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke by measuring transmission alone, i.e. determining opacity

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)
  • Optical Measuring Cells (AREA)

Abstract

1,200,038. Photo-electric testing. SNAM PROGETTI S.p.A. Sept.9, 1968 [Sept.21, 1967], No.42863/68. Heading G1A. The opacity of a gas is measured by passing it through a venturi b and measuring the transmissivity through diametrically opposed apertures in the region of the venturi constriction. Light from a bulb 7 is passed through the apertures via an aperture in a diaphragm 9, a filter 10, and a half silvered mirror 3, and its intensity may be measured by a light-sensitive cell at 1 or may be reflected back from a mirror at 1 to a cell 4 by way of the mirror 3. Light diverted by mirror 3 on to a further cell 12 may be used to compensate for variations in the source or alternatively a constant light source may be used. Apertures 14 in the housing to the venturi apertures allow for an inflow of air to keep the passages dust free. The measuring of exhaust gases from diesel engines is referred to.
GB4286368A 1967-09-21 1968-09-09 Apparatus and method for measuring the opacity of gases Expired GB1200038A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2072667 1967-09-21

Publications (1)

Publication Number Publication Date
GB1200038A true GB1200038A (en) 1970-07-29

Family

ID=11171135

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4286368A Expired GB1200038A (en) 1967-09-21 1968-09-09 Apparatus and method for measuring the opacity of gases

Country Status (9)

Country Link
AT (1) AT296658B (en)
BE (1) BE721171A (en)
CH (1) CH513398A (en)
CS (1) CS186751B2 (en)
DE (2) DE1798242B1 (en)
FR (1) FR1585693A (en)
GB (1) GB1200038A (en)
NL (1) NL6813403A (en)
SE (1) SE343395B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000009990A1 (en) * 1998-08-13 2000-02-24 Rees Equipment Pty Ltd. A protective means or assembly
AU752387B2 (en) * 1998-08-13 2002-09-19 Rees Equipment Pty Ltd A protective means or assembly
DE10057652B4 (en) * 1999-11-26 2005-03-31 Avl List Gmbh Method for measuring opacity in gases
EP2803976A1 (en) * 2013-05-14 2014-11-19 Capelec Sarl Device for controlling the opacity and the nitrogen oxides in exhaust gases

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1549193A (en) * 1975-04-29 1979-08-01 Hartridge Ltd Leslie Apparatus for measuring smoke density
DE4129068C2 (en) * 1991-09-02 1999-05-20 Grundig Ag Arrangement for measuring exhaust gases in internal combustion engines
FR3005738B1 (en) * 2013-05-14 2016-02-05 Capelec OPACIMETER FOR DETECTION OF LOW LEVELS OF POLLUTANTS IN AN EXHAUST GAS

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1247688B (en) * 1965-04-03 1967-08-17 Visomat Geraete G M B H Truebungsmesser, in particular smoke density meter

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000009990A1 (en) * 1998-08-13 2000-02-24 Rees Equipment Pty Ltd. A protective means or assembly
AU752387B2 (en) * 1998-08-13 2002-09-19 Rees Equipment Pty Ltd A protective means or assembly
DE10057652B4 (en) * 1999-11-26 2005-03-31 Avl List Gmbh Method for measuring opacity in gases
EP2803976A1 (en) * 2013-05-14 2014-11-19 Capelec Sarl Device for controlling the opacity and the nitrogen oxides in exhaust gases
FR3005737A1 (en) * 2013-05-14 2014-11-21 Capelec DEVICE FOR MONITORING OPACITY AND NITROGEN OXIDES IN EXHAUST GASES

Also Published As

Publication number Publication date
SE343395B (en) 1972-03-06
FR1585693A (en) 1970-01-30
CH513398A (en) 1971-09-30
DE1798242B1 (en) 1971-08-26
AT296658B (en) 1972-02-25
DE6609536U (en) 1972-06-22
BE721171A (en) 1969-03-03
NL6813403A (en) 1969-03-25
CS186751B2 (en) 1978-12-29

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Legal Events

Date Code Title Description
PS Patent sealed
PLE Entries relating assignments, transmissions, licences in the register of patents
PE20 Patent expired after termination of 20 years