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Liquid refractive index measurement device and measurement method

A technology of liquid refractive index and measuring device, applied in the field of optical measurement, can solve the problems of high cost, complicated operation, large error of liquid refractive index results, etc., and achieve the effect of accurate results

Pending Publication Date: 2019-08-16
SHAANXI UNIV OF SCI & TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Aiming at the technical problems existing in the prior art, the present invention provides a measuring device and method for measuring the refractive index of liquids, so as to solve the technical problems in the prior art that the results of measuring the refractive index of liquids have large errors, complicated operation and high cost

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  • Liquid refractive index measurement device and measurement method
  • Liquid refractive index measurement device and measurement method
  • Liquid refractive index measurement device and measurement method

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Embodiment

[0117] In the present invention, the first syringe pump 43 is used to generate the liquid column 4 to be tested from the liquid to be tested, and the second syringe pump 73 is used to generate the standard liquid column 7 from the standard liquid; the parameters of the first syringe pump 43 and the second syringe pump 73 The options are: the setting range of injection flow rate is 0.1ml / h-1600ml / h; the minimum resolution is 0.1ml / h; the setting range of injection volume is 0.1ml-9999.9ml; ℃; injection accuracy is ±3%.

[0118] The thin tube connected to the syringe in the syringe pump has an inner diameter of 0.8 mm and an outer diameter of 1.6 mm.

[0119] The light source 1 adopts He-Ne laser, and the He-Ne laser adopts the model HNL150L laser produced by Soleibo Company. The wavelength of the parallel light emitted by the laser is 632.8nm, the power is 15mW, and the linearly polarized light output.

[0120] The first linear array CCD5 is used to record the rainbow distribu...

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Abstract

The invention discloses a liquid refractive index measurement device and measurement method. The measurement device comprises a light source, used for emitting parallel light beams; a half-transparentsemi-reflective mirror is arranged on a light path, and used for dividing the parallel light beams emitted by the light source into a first light beam and a second light beam; the first light beam irradiates a liquid column to be measured, and is formed into rainbow distribution of the liquid to be measured via scattering; a first linear array CCD is used for recording the rainbow distribution ofstandard liquid; both the first linear array CCD and a second linear array CCD are connected with the computer; the second light beam irradiates a plane mirror, and irradiates a standard liquid column after being reflected by the plane mirror, and is formed into rainbow distribution of the standard liquid after being scattered; the second linear array CCD is used for recording to the rainbow distribution of the standard liquid. According to the measurement device and measurement method provided by the invention, after the parallel light beams irradiate the standard liquid column and the liquid column to be measured, a first-order rainbow is separately formed at the standard liquid column and the liquid column to be measured in parallel; the refractive index of the liquid to be measured isacquired through analyzing the first-order rainbows at the standard liquid column and the liquid column to be measured; the measurement method is simple and easy to operate.

Description

technical field [0001] The invention belongs to the technical field of optical measurement, and in particular relates to a measuring device and a measuring method for the refractive index of liquid. Background technique [0002] Among the many optical parameters of matter, the refractive index is very important. The properties of the material such as purity, concentration and dispersion can be understood through the refractive index. In addition, the refractive index is also closely related to some parameters such as the thermo-optic coefficient; the precise measurement of the refractive index It is of great significance in industrial sectors such as chemical plants, pharmaceutical plants and food plants. [0003] In the prior art, there are various methods for measuring the refractive index of liquids, and the common methods are: [0004] 1. Laser irradiation method, when measuring the refractive index, the laser irradiation method needs the refraction of the liquid and th...

Claims

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Application Information

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IPC IPC(8): G01N21/41
CPCG01N21/41
Inventor 罗道斌秦毅盼骞来来师博谢娇娇吴圣博岳宗敏
Owner SHAANXI UNIV OF SCI & TECH
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