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
Links
- 238000001514 detection method Methods 0.000 title 1
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)
- General Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Geophysics And Detection Of Objects (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
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)
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)
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 |
ES8303571A1 (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 |
-
1989
- 1989-05-05 IT IT8920384A patent/IT1229343B/it active
-
1990
- 1990-04-14 EP EP19900107210 patent/EP0395932A3/de not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
EP0395932A3 (de) | 1991-12-11 |
EP0395932A2 (de) | 1990-11-07 |
IT8920384A0 (it) | 1989-05-05 |
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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 |