FR2404217A1 - Opacimetre pour les dispersions non-uniformes - Google Patents

Opacimetre pour les dispersions non-uniformes

Info

Publication number
FR2404217A1
FR2404217A1 FR7728788A FR7728788A FR2404217A1 FR 2404217 A1 FR2404217 A1 FR 2404217A1 FR 7728788 A FR7728788 A FR 7728788A FR 7728788 A FR7728788 A FR 7728788A FR 2404217 A1 FR2404217 A1 FR 2404217A1
Authority
FR
France
Prior art keywords
receiver
light source
null point
point drift
opacity measurement
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Withdrawn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
FR7728788A
Other languages
English (en)
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.)
INST CERCETARI MODERNIZARI
Original Assignee
INST CERCETARI MODERNIZARI
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 INST CERCETARI MODERNIZARI filed Critical INST CERCETARI MODERNIZARI
Priority to FR7728788A priority Critical patent/FR2404217A1/fr
Publication of FR2404217A1 publication Critical patent/FR2404217A1/fr
Withdrawn legal-status Critical Current

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 sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47Scattering, i.e. diffuse reflection
    • G01N21/49Scattering, i.e. diffuse reflection within a body or fluid
    • G01N21/53Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke
    • G01N21/534Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke by measuring transmission alone, i.e. determining opacity

Abstract

L'appareil est formé d'un projecteur et d'un récepteur de lumière à élément photosensible disposés sur les parois opposées du conduit de fluide et ayant chacun une chambre étanche à fenêtre transparente et une chambre de circulation d'air munie d'un tube à diaphragmes par lequel circule un courant d'air filtré par un filtre à air. Suivant l'invention on utilise seulement la composante alternative du signal qui apparaît aux bornes de l'élément photosensible 6 alimenté par une source stabilisées 1, cette composante s'appliquant par l'intermédiaire d'un condensateur 14 sur une résistance 15 d'entrée d'un amplificateur de courant alternatif 16 à la sortie duquel est connecté un redresseur formé d'un pont redresseur 19 et d'un condensateur 20 et suivi par un enregistreur de courant continu ou un régulateur 21, de sorte qu'on applique à l'enregistreur ou au régulateur un signal proportionnel à la composante alternative qui renferme l'information sur la présence des particules solides opaques dans le fluide transparent
FR7728788A 1977-09-23 1977-09-23 Opacimetre pour les dispersions non-uniformes Withdrawn FR2404217A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7728788A FR2404217A1 (fr) 1977-09-23 1977-09-23 Opacimetre pour les dispersions non-uniformes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7728788A FR2404217A1 (fr) 1977-09-23 1977-09-23 Opacimetre pour les dispersions non-uniformes

Publications (1)

Publication Number Publication Date
FR2404217A1 true FR2404217A1 (fr) 1979-04-20

Family

ID=9195735

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7728788A Withdrawn FR2404217A1 (fr) 1977-09-23 1977-09-23 Opacimetre pour les dispersions non-uniformes

Country Status (1)

Country Link
FR (1) FR2404217A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2517059A1 (fr) * 1981-11-25 1983-05-27 Bergstroem Paer Haakan Dispositif de mesure de la concentration de particules vehiculees par un liquide circulant dans un tube

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2517059A1 (fr) * 1981-11-25 1983-05-27 Bergstroem Paer Haakan Dispositif de mesure de la concentration de particules vehiculees par un liquide circulant dans un tube

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Legal Events

Date Code Title Description
ST Notification of lapse