GB1276977A - Improvements in and relating to apparatus for detecting the opacity of gases - Google Patents

Improvements in and relating to apparatus for detecting the opacity of gases

Info

Publication number
GB1276977A
GB1276977A GB1164570A GB1164570A GB1276977A GB 1276977 A GB1276977 A GB 1276977A GB 1164570 A GB1164570 A GB 1164570A GB 1164570 A GB1164570 A GB 1164570A GB 1276977 A GB1276977 A GB 1276977A
Authority
GB
United Kingdom
Prior art keywords
spigots
opacity
detecting
march
photo
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
GB1164570A
Inventor
Marcel Theodore Pillard
Frederic Guigues
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1276977A publication Critical patent/GB1276977A/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

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)

Abstract

1276977 Detecting the opacity of gases M T PILLARD and F GUIGUES 11 March 1970 [13 March 1969] 11645/70 Heading G1A An apparatus for detecting the opacity of combustion smoke or gas containing particles 7 in suspension flowing through a duct comprises a light source and a photo-electric receiver, the source and receiver being disposed away from the hot walls 6 of the duct and being connected by optical fibres 14 to spigots 11, 10 so that the spigot 10 collects the light beam reflected by the particles in suspension. The spigots each take the form of a hollow sleeve 12 with scavenging air-flowing between the sleeve 12 and the optical fibre, said air being intended to prevent soot collecting on the optical fibres. To obviate errors due to temperature variations, the photo-electric receiver is paired with an identical but unilluminated detector heated to the same temperature, each detector being placed in one arm of a Wheatstone bridge. The two spigots are so secured to their plate 9 that their axes form with one another an angle which can be any value from 0 degrees to just under 180 degrees.
GB1164570A 1969-03-13 1970-03-11 Improvements in and relating to apparatus for detecting the opacity of gases Expired GB1276977A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6907420A FR2036476A5 (en) 1969-03-13 1969-03-13

Publications (1)

Publication Number Publication Date
GB1276977A true GB1276977A (en) 1972-06-07

Family

ID=9030687

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1164570A Expired GB1276977A (en) 1969-03-13 1970-03-11 Improvements in and relating to apparatus for detecting the opacity of gases

Country Status (4)

Country Link
CA (1) CA935661A (en)
DE (1) DE2011733A1 (en)
FR (1) FR2036476A5 (en)
GB (1) GB1276977A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2232242B (en) * 1989-03-22 1993-04-07 Graviner Ltd Kidde Particulate detecting and optical coupling arrangements
EP1069425A1 (en) * 1999-07-12 2001-01-17 Entreprise Generale De Chauffage Industriel Pillard Method and device for detecting and measuring optically the quantity of opaque particles which are present in a gas

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3233368A1 (en) * 1982-09-08 1984-03-08 Heimann Gmbh, 6200 Wiesbaden RADIATION SMOKE DETECTORS
AT1157U1 (en) * 1995-12-15 1996-11-25 Avl Verbrennungskraft Messtech METHOD FOR THE OPTICAL MEASUREMENT OF GAS BUBBLES IN A COOLANT

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR951331A (en) * 1940-03-19 1949-10-21 C O Two Fire Equipment Co Improvements to smoke detectors and alarms
US2892378A (en) * 1955-04-26 1959-06-30 Gen Electric Indicating turbidimeter
GB984571A (en) * 1961-01-23 1965-02-24 Graviner Manufacturing Co Improvements in or relating to detectors of smoke and other fluid suspensions
GB1179409A (en) * 1966-11-28 1970-01-28 Kidde Walter Co Ltd Improvements in or relating to Smoke Detectors

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2232242B (en) * 1989-03-22 1993-04-07 Graviner Ltd Kidde Particulate detecting and optical coupling arrangements
EP1069425A1 (en) * 1999-07-12 2001-01-17 Entreprise Generale De Chauffage Industriel Pillard Method and device for detecting and measuring optically the quantity of opaque particles which are present in a gas
FR2796461A1 (en) * 1999-07-12 2001-01-19 Pillard Chauffage METHOD AND DEVICE FOR OPTICAL DETECTION AND MEASUREMENT OF THE QUANTITY OF OPAQUE PARTICLES PRESENT IN A GAS

Also Published As

Publication number Publication date
FR2036476A5 (en) 1970-12-24
CA935661A (en) 1973-10-23
DE2011733A1 (en) 1970-10-15

Similar Documents

Publication Publication Date Title
US4249244A (en) Electro-optical system and method and apparatus for providing automatically-compensating, traceable calibration and zeroing for light scattering devices
US3809913A (en) Detector for particulate matter in flowing gas streams
GB1276977A (en) Improvements in and relating to apparatus for detecting the opacity of gases
GB1330101A (en) Method of nondestructive measurement of the state of a surface
GB1471335A (en) Apparatus for use in monitoring a stream of gases
US2434029A (en) Interferometer apparatus for quantitatively determining fluid pressures in wind tunnels
US1770355A (en) Gas refractometer
US3768301A (en) Arrangement for determining the thermal conductivity of gases
SU763698A1 (en) Temperature measuring method
CN2218928Y (en) On-line monitoring instrument for gas turbid and dust concentration
US4396286A (en) Electro-optical system and method and apparatus for providing automatically-compensating, traceable calibration and zeroing for light scattering devices
JPS6182142A (en) Measuring device for concentration of gas in gas current
Sullivan The calibration of smoke density
CN209857956U (en) Continuous emission monitoring system of flue gas
GB1173937A (en) Improvements in Apparatus for Measuring the Concentration of Flowing Gaseous Suspensions
CN214703224U (en) High-precision dust monitor
US2777355A (en) Device for evaluating the sensitivity of an optical system utilizing the foucault knife edge test
GB1235854A (en) A method and device for combustion control
CN115877032B (en) Method for detecting smoke flow velocity by optical interference scintillation method and smoke flow velocity measuring instrument
US2040265A (en) Smoke indicator
SU1203410A1 (en) Indicator of exhaust gas density
DE59009843D1 (en) Safety monitoring of a speed-controlled combustion air blower.
GB1460623A (en) Apparatus for detecting suspended particles in liquids
JPS5689031A (en) Method and device for measuring temperature of seam part or the like
GB661990A (en) Apparatus for continuous gas analysis

Legal Events

Date Code Title Description
PS Patent sealed
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PE20 Patent expired after termination of 20 years