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Apparatus for measuring liquid material component content by near-infrared spectrum

A near-infrared spectroscopy, liquid technology, applied in measurement devices, measurement of scattering properties, material analysis by optical means, etc., can solve the problems of bulky, single-beam detection, expensive instruments, etc. The effect of precision

Inactive Publication Date: 2007-04-18
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But there are the following defects: 1. The instrument is expensive; 2. It is bulky; 3. The interferometer system is precise and the reliability of on-site measurement is weakened; 4. Single beam detection and other problems

Method used

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  • Apparatus for measuring liquid material component content by near-infrared spectrum

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Embodiment Construction

[0017] Device composition: The operating temperature range of the device is 4~60℃, 0-80%RH.

[0018] As shown in Figure 1, light source 1 adopts halogen lamp; light splitting system 2 adopts acousto-optic filter, grating, and filter structure; beam splitter 3 adopts 1mm thick SiO 2 Glass, anti-reflection coating on both sides, 98% penetration and filtration; sample cell 4, reference sample cell 5 and transflective sample cell 8 are 1mm thick SiO 2 The rectangular parallelepiped structure made of glass is 20mm wide and 50mm high. The thickness of the liquid in the sample cell is 1, 2, 5 and 10mm. The motor controls the process of sample injection and washing of the sample cell, reference sample cell and transflective sample cell; Liquid substance samples (containing organic components) such as beer liquor and other alcoholic beverages, syrups and cane juice clear juices and other sugar juices, milk and yogurt and other milk juices, salad oil and peanut oil and other oils, fruit jui...

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Abstract

The invention relates to near infrared spectral measurement fluent material component content device. It is made up of light source, optical splitting system, diffuse scattering light collecting system, sample cell, reference sample cell, pervious reflection sample cell, photoelectric sensor, reference photoelectric sensor, amplifier, A / D converter, light beam splitter, standard white plate, temperature sensor, control module, spectroscopic data register, scaling reference register, computation module, result output module which is set in thermostat. The invention can increase measuring precision, ensure sample information content abundant, gain sample various components and contents at the same time. The device has little volume, simple operation and maintenance which can be suited for on site real time measurement.

Description

Technical field [0001] The present invention relates to a measurement technology, in particular to a device that uses near-infrared spectroscopy analysis technology to obtain the transmission, transmission, reflection, and scattering spectra and material component content of liquid substances (containing organic components), and is specifically a near-infrared spectroscopy to measure liquid A device for the content of a substance. Background technique [0002] When measuring the alcohol content of beer and the original wort concentration, the beer or wort is first degassed, and the density is measured using a U-shaped hollow vibrating tube. The alcohol content is the concentration of alcohol vapor in a beer sample that has reached dynamic equilibrium with a catalytic sensor. The measurement time is long. For example, in "Analytical Chemistry", 2004, (32), 1070-1073, the article titled "Near-infrared spectroscopy determination of the main components ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/17G01N21/51G01N21/01
Inventor 张军
Owner JINAN UNIVERSITY
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