JPS6468637A - Optical liquid specific gravity measuring instrument - Google Patents

Optical liquid specific gravity measuring instrument

Info

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
Application number
JP22742087A
Other languages
Japanese (ja)
Inventor
Koichi Nakamura
Katsunori Takahashi
Takashi Shinoda
Motoo Shimizu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Priority to JP22742087A priority Critical patent/JPS6468637A/en
Publication of JPS6468637A publication Critical patent/JPS6468637A/en
Pending legal-status Critical Current

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.
JP22742087A 1987-09-09 1987-09-09 Optical liquid specific gravity measuring instrument Pending JPS6468637A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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