Which NIR fiber spectrometer has a good service? What is usually suitable to buy?

The small size and light weight make it easy for the user to place the spectrometer in the system.

The grating is fixed without scanning to ensure the stability of the optical system.

Built-in imported CCD chip, large dynamic range, fast data transmission, high-speed control technology, can set a new integration time within 1ms, save time for spectrometer control to achieve real-time measurement.

Spectral calibration software and application software are available.

It is widely used in light source manufacturing and research (such as LED, etc.), agriculture, chemical, pharmaceutical, biological, petroleum and printing and dyeing industries, and can also be used for transmission, absorption and fluorescence spectroscopy.

The process of writing the book, "Dream of Red Mansions", book shadow.

2009 China Animation Society - Annual Recommended Work.

It is now recognized that the earliest and most complete Seven Ancient Texts is Cao Pi's "Yan Ge Xing". During the Northern and Southern Dynasties, Bao Zhao devoted himself to the creation of the Seven Ancient Dynasties, which evolved into a vibrant poetic genre. The seven ancient times of the Tang Dynasty show the atmosphere of the Tang Dynasty, with a variety of techniques, deep and open, and the representative poets are Li Bai, Du Fu, and Han Yu.

The five-character rhythm poem is referred to as the five laws, which is a type of rhythm poem. Originating from the ancient style of five words, the style is neat, the rhythm is vigorous, and the subtlety is profound, and it has become a common poetic theme in the Tang people's system, examination, and daily life. There are countless famous masters of the five laws in the Tang Dynasty, with Wang Changling, Wang Wei, Meng Haoran, Li Bai, Du Fu, and Liu Changqing as the greatest.

The seven-character poem is referred to as the seven rules, which is a kind of near-body poem, and the requirements for the rhythm are the same as the five rules. The Seven Laws originated from the ancient style of Seven Words, which gradually became large-scale in the early Tang Dynasty, and reached the perfection of Du Fuzhen. There is the Tang generation, and the seven laws of the holy hand have Wang Wei, Du Fu, Li Shangyin, Du Mu, Luo Yin, etc., which are peerless, reflecting the ancient and modern.

The five-seven-character quatrain is referred to as the five quatrains and the seven quatrains, which are both a kind of quatrains in the classical poetic style. The Five Absolute Origins originated in the Han Dynasty, and the Seven Absolute Ones originated in the Six Dynasties, both of which were formed during the Qi Liang period and matured in the early Tang Dynasty. The quatrain of the Tang Dynasty was lofty, frank and natural, and reached the highest peak of the liberalization of recitation, and the famous artists were Li Bai, Wang Wei, Wang Changling, Wei Yingwu, Du Mu, Liu Yuxi and others.

Finished product catalog.

The spectrum analyzer uses the entire infrared (including near-infrared, mid-infrared, and far-infrared) as the heat source, and the spectral range is very wide (microns), so it is also called a broadband instrument; The far-infrared physiotherapy device uses far-infrared rays as the heat source. Theoretically, since the infrared wavelength produced by the human body is 4-16 microns, which belongs to the range of far-infrared rays, the efficacy of far-infrared physiotherapy devices should be better.

Infrared rays can pass through**, directly causing a thermal effect on muscles, subcutaneous tissues, etc. Accelerates the circulation of blood substances, increases metabolism, reduces pain, increases muscle relaxation, produces massage effects, etc. Infrared rays are mainly due to their ability to mobilize the body's own disease resistance from different levels.

Shanghai Dianjiang Technology is committed to ecological agriculture, with professional direct services such as pre-sale, in-sale and after-sale, so that users can buy with confidence and peace of mind. Depending on your needs, the following infrared spectrometer is recommended.

PS-300 ultraviolet near-infrared spectrometer.

Name: Ultraviolet Near-Infrared Spectrometer Model: PS-300 Place of Origin: United States**Business: Dianjiang Technology

Application: PS-300 ultraviolet near-infrared spectrometer can measure the incidence, reflection and transmission spectra of 300 1000nm, and the spectral diagram of incident light, reflected light and transmitted light can be directly read out through computer software.

<> Features: Portable and sturdy aluminum case design.

Apogee's cosine corrector ensures accurate measurements of low-angle light.

The resolution is less than 1 nm within the calibrated measurement range of 300-1000 nm (NIST traceability).

Samples can be measured directly without pretreatment: NIR spectroscopy is available in a variety of formats such as transmission, reflection and diffuse reflection, and is suitable for measuring samples in the form of liquids, solids and slurries, so it is very versatile. The biggest advantage is that there is no need to pre-treat the sample, such as gasoline can be poured directly into the measuring cup or the fiber optic probe can be inserted directly into the gasoline for measurement, which is very convenient and can complete the spectral scan in a few seconds.

Optical fiber long-distance measurement: Near-infrared light can be transmitted over long distances through optical fibers, which can realize long-distance measurement beyond the spectrometer, and can directly install the measurement probe or flow cell into the pipeline of the production equipment to achieve first-class measurement, or on-site measurement in harsh and dangerous places. A **NIR spectrometer can be connected to multiple (2 10-way) optical fiber loops to realize the measurement of materials at multiple measurement points of the production unit at the same time.

**Measurement data can be fed directly to the DCS or advanced control system to provide timely oil quality parameters for production optimization. Compared to parameters provided by other measuring instruments, such as variables such as pressure, flow and temperature, NIR analysis provides data such as composition or properties that are direct quality parameters and provide a more accurate and beneficial reference for the optimization of production. Near-infrared analysis is used in conjunction with conventional standard analysis methods, which not only provides analysis data to the production control department in a timely manner, but also saves a lot of analysis and laboratory costs (including manpower, equipment, and reagents, etc.); **NIR analysis is connected to the DCS and provides data directly to the control system, and the economic benefits of production optimization are enormous; Compared with other first-class instruments, the NIR spectrometer has a low operating failure rate and consumption.

It is generally divided into two categories, one is raster-scanned, which is rarely used; The other is scanned by Michelson interferometers, called Fourier transform infrared spectroscopy, which is currently the most widely used. Raster scanning uses a beamsplitter to divide the detection light (infrared light) into two beams, one as a reference light and the other as a detection light to irradiate the sample, and then uses a grating and a monochromator to separate the wavelengths of infrared light, scan and detect the intensity of each wavelength, and finally integrate it into a spectrum. Fourier transform infrared spectroscopy uses a Michelson interferometer to divide the detection light (infrared light) into two beams, which are reflected back to the beam splitter on the moving mirror and the fixed mirror.

The coherent infrared light is irradiated on the sample, collected by the detector, and the infrared interferogram data containing the sample information is obtained, and the infrared spectrum of the sample is obtained after the Fourier transform of the data by the computer. Implicit FTIR spectroscopy is widely used due to its fast scanning rate, high resolution, and stable repeatability.

Infrared spectroscopy is a method for the analysis and identification of material molecules using infrared spectroscopy. During the inspection, a beam of infrared rays of different wavelengths is irradiated to the material, and the wavelength of infrared light is absorbed, forming this infrared spectrum.

Infrared spectroscopy is the molecular energy selectively absorbs some wavelengths of infrared rays, and causes the transition of vibrational energy level and rotational energy level in the molecule.

In organic molecules, the atoms that make up chemical bonds or functional groups are in a state of constant vibration, and their vibrational frequency is comparable to that of infrared light. Therefore, when irradiating organic molecules with infrared light, the chemical bonds or functional groups in the molecule can be vibrated and absorbed, and different chemical bonds or functional groups will be in different positions on the infrared spectrum with different absorption frequencies, so that information about what kind of chemical bonds or functional groups contained in the molecule can be obtained.

In the 60s of the 20th century, with the large amount of work done by Norris et al., the theory of a linear relationship between the content of substances and the absorption peaks of multiple different wavelength points in the near-infrared region was proposed, and the use of near-infrared diffuse reflection technology to determine the water, protein, fat and other components in agricultural products, so that the near-infrared spectroscopy technology was once widely used in the analysis of agricultural and sideline products. In the mid-to-late 60s, with the emergence of various new analytical techniques, coupled with the weaknesses of low sensitivity and poor anti-interference exposed by classical near-infrared spectroscopy analysis technology, people were indifferent to the application of this technology in analytical testing, and since then, near-infrared spectroscopy has once again entered a silent period.

The successful application of multivariate correction technology, an important part of the discipline of chemometrics (chemometrics) produced in the 70s, in spectroscopic analysis has promoted the popularization of near-infrared spectroscopy technology. By the late 80s, with the rapid development of computer technology, the digitization of analytical instruments and the development of chemometrics have been driven, and the good results achieved in solving the spectral information extraction and background interference through chemometric methods have been achieved, coupled with the exclusive characteristics of near-infrared spectroscopy in sample measurement technology, so that people are re-familiar with the value of near-infrared spectroscopy, and the application of near-infrared spectroscopy in various fields has been studied one after another. In the 90s, NIR spectroscopy was fully applied in the industrial field, and the research and application literature on NIR spectroscopy increased almost exponentially, becoming the fastest growing and most eye-catching independent analytical technology.

Due to the good transmission characteristics of near-infrared light in conventional optical fibers, near-infrared spectroscopy has also been well applied in the field of analysis, and has achieved good social and economic benefits, since then near-infrared spectroscopy technology has entered a new era of rapid development.