JPS6420431A - Method and device for measuring fine particles - Google Patents
Method and device for measuring fine particlesInfo
- Publication number
- JPS6420431A JPS6420431A JP63083659A JP8365988A JPS6420431A JP S6420431 A JPS6420431 A JP S6420431A JP 63083659 A JP63083659 A JP 63083659A JP 8365988 A JP8365988 A JP 8365988A JP S6420431 A JPS6420431 A JP S6420431A
- Authority
- JP
- Japan
- Prior art keywords
- flow direction
- deflected
- beams
- range
- parallel
- 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.)
- Pending
Links
Classifications
-
- 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
- G01N15/02—Investigating particle size or size distribution
- G01N15/0205—Investigating particle size or size distribution by optical means
-
- 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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/03—Cuvette constructions
- G01N21/05—Flow-through cuvettes
- G01N2021/058—Flat flow cell
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth 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
PURPOSE:To measure the diameter of a particle with high accuracy by a simple optical system, by forming two parallel beams which are deflected a little in the direction intersecting orthogonally with the flow direction of a sample and the direction of a laser beam. CONSTITUTION:Plural parallel beams 2a, 2b are deflected each other in the direction intersecting orthogonally with the flow direction and the direction of a laser beam within a range in which beam spots are overlapped to each other in the flow direction of a sample fluid, and also, deflected by a prescribed distance in the flow direction, by allowing the laser beams whose intensity becomes higher gradually from the peripheral part to the inside in the peripheral part and in the vicinity of its inside, to have a prescribed intensity distribution, respectively. Among scattered light beams generated due to a fact that a fine particle crosses the parallel means, at least two scattered light beams generated continuously due to a fact that the same fine particle crosses successively are detected, based on the relation of a know flow velocity of the sample fluid and the interval of the parallel beams. From a ratio of a detected output value, a detection range is selected, and based on the detected output value within the range, the diameter of the particle is measured.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63083659A JPS6420431A (en) | 1987-04-23 | 1988-04-05 | Method and device for measuring fine particles |
| US07/185,135 US4906094A (en) | 1987-04-23 | 1988-04-22 | Fine particle measuring method and system and a flow cell for use in the system |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10101387 | 1987-04-23 | ||
| JP63083659A JPS6420431A (en) | 1987-04-23 | 1988-04-05 | Method and device for measuring fine particles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6420431A true JPS6420431A (en) | 1989-01-24 |
Family
ID=26424693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63083659A Pending JPS6420431A (en) | 1987-04-23 | 1988-04-05 | Method and device for measuring fine particles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6420431A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0889318A1 (en) * | 1997-07-02 | 1999-01-07 | Palas GmbH Partikel-und Lasermesstechnik | Process and device for testing aerosol particle size distribution |
| JP2008527366A (en) * | 2005-01-14 | 2008-07-24 | ユニデータ ヨーロッパ リミテッド | Particulate matter detector |
| WO2016076037A1 (en) * | 2014-11-14 | 2016-05-19 | ソニー株式会社 | Particle analysis device and particle analysis method |
-
1988
- 1988-04-05 JP JP63083659A patent/JPS6420431A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0889318A1 (en) * | 1997-07-02 | 1999-01-07 | Palas GmbH Partikel-und Lasermesstechnik | Process and device for testing aerosol particle size distribution |
| JP2008527366A (en) * | 2005-01-14 | 2008-07-24 | ユニデータ ヨーロッパ リミテッド | Particulate matter detector |
| WO2016076037A1 (en) * | 2014-11-14 | 2016-05-19 | ソニー株式会社 | Particle analysis device and particle analysis method |
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