JPS57101742A - Optical concentration meter - Google Patents
Optical concentration meterInfo
- Publication number
- JPS57101742A JPS57101742A JP17919180A JP17919180A JPS57101742A JP S57101742 A JPS57101742 A JP S57101742A JP 17919180 A JP17919180 A JP 17919180A JP 17919180 A JP17919180 A JP 17919180A JP S57101742 A JPS57101742 A JP S57101742A
- Authority
- JP
- Japan
- Prior art keywords
- dirt
- photocell
- receives
- light
- difference
- 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
- 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
Abstract
PURPOSE:To compensate the effect of dirt by using a photocell which receives the scattered light from dirt particles and a photocell which receives the reflected light from the dirt attached on an optical surface. CONSTITUTION:Light is emitted from a light source lamp 13 into specimen liquid. The photocell 4 receives the reflected light from the dirt 12 attached to a window member 8 and the scattered light from the dirt particles 2. The photocell 5 receives only the scattered light from the dirt particles 2. The ratio of both photocells 4 and 5 is obtained by dividing circuit 9 and the difference is obtained by a subtracting circuit 11. A reference difference DELTAM, which is obtained when the dirt does not exist in a setting device 13 beforehand, is subtracted from the difference DELTAS, which is obtained in said circuits, in a comparator 14. The resulting value is proportional to the dirt 12. Therefore, when the output of the dividing circuit 9 is compensated by said value, the concentration of the dirt particles 2 can be accurately measured regardless of the dirt 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17919180A JPS57101742A (en) | 1980-12-17 | 1980-12-17 | Optical concentration meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17919180A JPS57101742A (en) | 1980-12-17 | 1980-12-17 | Optical concentration meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57101742A true JPS57101742A (en) | 1982-06-24 |
Family
ID=16061522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17919180A Pending JPS57101742A (en) | 1980-12-17 | 1980-12-17 | Optical concentration meter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57101742A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1566625A1 (en) * | 2004-02-23 | 2005-08-24 | Ortho-Clinical Diagnostics, Inc. | Method for determining an analyte by multiple measurements through a cuvette |
| WO2020079800A1 (en) * | 2018-10-18 | 2020-04-23 | 株式会社島津製作所 | Detection apparatus |
-
1980
- 1980-12-17 JP JP17919180A patent/JPS57101742A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1566625A1 (en) * | 2004-02-23 | 2005-08-24 | Ortho-Clinical Diagnostics, Inc. | Method for determining an analyte by multiple measurements through a cuvette |
| WO2020079800A1 (en) * | 2018-10-18 | 2020-04-23 | 株式会社島津製作所 | Detection apparatus |
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