JPS6468637A - Optical liquid specific gravity measuring instrument - Google Patents
Optical liquid specific gravity measuring instrumentInfo
- Publication number
- JPS6468637A JPS6468637A JP22742087A JP22742087A JPS6468637A JP S6468637 A JPS6468637 A JP S6468637A JP 22742087 A JP22742087 A JP 22742087A JP 22742087 A JP22742087 A JP 22742087A JP S6468637 A JPS6468637 A JP S6468637A
- Authority
- JP
- Japan
- Prior art keywords
- light
- liquid
- prism
- contacting surface
- refractive index
- 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
Abstract
PURPOSE:To take a measurement in a short time by providing a prism where light from a light source is made incident and light diffracted spectrally by the contacting surface of liquid to be measured is guided out and a photodetector which detects and converts said spectrally diffracted light into an electric signal. CONSTITUTION:The light emitted by the light source 1 is guided in by an optical fiber 2A and entered into the prism 3. The incident light travels toward the liquid contacting surface of the prism 3 and split by the contacting surface into light which is transmitted toward the liquid as an isotropic medium, i.e. refracted light and reflected light. The quantity of the light diffracted spectrally by the liquid contacting surface of the prism 3, on the other hand, varies with the refractive index of the liquid in constant correlation with the liquid medium. Namely, the quantity of the reflected light which is reduced by said quantity of transmitted light from the incident light is in constant correlation with the refractive index of the liquid. For the purpose, the output signal of the light source 1 and the output signal of the photodetector 4 are inputted to a processor 6 and the ratio of both signals is computed to know the refractive index of the liquid.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22742087A JPS6468637A (en) | 1987-09-09 | 1987-09-09 | Optical liquid specific gravity measuring instrument |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22742087A JPS6468637A (en) | 1987-09-09 | 1987-09-09 | Optical liquid specific gravity measuring instrument |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6468637A true JPS6468637A (en) | 1989-03-14 |
Family
ID=16860563
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP22742087A Pending JPS6468637A (en) | 1987-09-09 | 1987-09-09 | Optical liquid specific gravity measuring instrument |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6468637A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05133871A (en) * | 1991-03-11 | 1993-05-28 | Shinko Seiki Kk | Immersion type device for measuring specific gravity of liquid |
CN104655525A (en) * | 2015-01-22 | 2015-05-27 | 李学金 | Specific gravity hydrometer |
-
1987
- 1987-09-09 JP JP22742087A patent/JPS6468637A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05133871A (en) * | 1991-03-11 | 1993-05-28 | Shinko Seiki Kk | Immersion type device for measuring specific gravity of liquid |
CN104655525A (en) * | 2015-01-22 | 2015-05-27 | 李学金 | Specific gravity hydrometer |
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