IT1229343B - Dispositivo fotoelettrico per il rilevamento di perdite nei filtri e maniche. - Google Patents

Dispositivo fotoelettrico per il rilevamento di perdite nei filtri e maniche.

Info

Publication number
IT1229343B
IT1229343B IT8920384A IT2038489A IT1229343B IT 1229343 B IT1229343 B IT 1229343B IT 8920384 A IT8920384 A IT 8920384A IT 2038489 A IT2038489 A IT 2038489A IT 1229343 B IT1229343 B IT 1229343B
Authority
IT
Italy
Prior art keywords
leaks
sleeves
filters
detection
photoelectric device
Prior art date
Application number
IT8920384A
Other languages
English (en)
Other versions
IT8920384A0 (it
Inventor
Pietro Romano Breseghello
Original Assignee
Ivel Srl
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 Ivel Srl filed Critical Ivel Srl
Priority to IT8920384A priority Critical patent/IT1229343B/it
Publication of IT8920384A0 publication Critical patent/IT8920384A0/it
Priority to EP19900107210 priority patent/EP0395932A3/de
Application granted granted Critical
Publication of IT1229343B publication Critical patent/IT1229343B/it

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/10—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
    • G01J1/20—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle
    • G01J1/28—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle using variation of intensity or distance of source
    • G01J1/30—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle using variation of intensity or distance of source using electric radiation detectors
    • 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
    • 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
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/85—Investigating moving fluids or granular solids
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
    • G01N2015/084—Testing filters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
    • G01N2015/0846—Investigating permeability, pore-volume, or surface area of porous materials by use of radiation, e.g. transmitted or reflected light

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Geophysics And Detection Of Objects (AREA)
IT8920384A 1989-05-05 1989-05-05 Dispositivo fotoelettrico per il rilevamento di perdite nei filtri e maniche. IT1229343B (it)

Priority Applications (2)

Application Number Priority Date Filing Date Title
IT8920384A IT1229343B (it) 1989-05-05 1989-05-05 Dispositivo fotoelettrico per il rilevamento di perdite nei filtri e maniche.
EP19900107210 EP0395932A3 (de) 1989-05-05 1990-04-14 Photoelektrische Einrichtung zur Ermittlung von Verlusten in Schlauchfiltern

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT8920384A IT1229343B (it) 1989-05-05 1989-05-05 Dispositivo fotoelettrico per il rilevamento di perdite nei filtri e maniche.

Publications (2)

Publication Number Publication Date
IT8920384A0 IT8920384A0 (it) 1989-05-05
IT1229343B true IT1229343B (it) 1991-08-08

Family

ID=11166234

Family Applications (1)

Application Number Title Priority Date Filing Date
IT8920384A IT1229343B (it) 1989-05-05 1989-05-05 Dispositivo fotoelettrico per il rilevamento di perdite nei filtri e maniche.

Country Status (2)

Country Link
EP (1) EP0395932A3 (it)
IT (1) IT1229343B (it)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4665039B2 (ja) * 2009-03-26 2011-04-06 日本碍子株式会社 ハニカム構造体欠陥検査装置、及びハニカム構造体欠陥検査方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH567721A5 (en) * 1973-05-02 1975-10-15 Buehler Ag Geb Monitor sensing variations in flow in fluid path - measuring beam radiated alternately through medium and reference medium
ES509735A0 (es) * 1981-02-18 1983-02-01 Eaton Sa Monaco Dispositivo sensor destinado a ser utilizado en maquinas lavadoras.
US4637719A (en) * 1984-08-14 1987-01-20 Canadian Patents And Development Limited Optical measurement of marine conditions
DE3526458A1 (de) * 1985-07-24 1987-01-29 Grundig Emv Einrichtung zur optischen truebungsmessung von gasen
DE3722693C1 (de) * 1987-07-09 1988-05-05 Sonnenschein Accumulatoren UEberwachungseinrichtung fuer die Qualitaet eines Arbeitsfilters

Also Published As

Publication number Publication date
IT8920384A0 (it) 1989-05-05
EP0395932A2 (de) 1990-11-07
EP0395932A3 (de) 1991-12-11

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Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970529