- Contact Person : Ms. Liu Emily
- Company Name : Beijing Chinainvent Instrument Tech Co., Ltd.
- Tel : 86-10-82896091-8010
- Fax : 86-10-82896091-8099
- Address : Beijing,Beijing,8th Floor,No2Information Road,ShangDi,HaiDian District,
- Country/Region : China
- Zip : 100085
Adama transform near infrared Spectrometer
Principles
Hadamard Transform (HT), a multi-channel spectrometer modulation technology, advances in conducting several testing simultaneously, data dealing, etc. Mathematically, HT is actually the application of measuring design in optics area, achieving more accurate weight by separating items into several groups other than measuring them one by one. Therefore, supposing the quantity of HT models is N, the analyzer will test the corresponding signals of each HT model and then revert them into sample original signals.
Comparing to the ordinary analyzers, HT-NIR Analyzer could test the total strength of combined signals in several groups simultaneously. Under the same lab circumstances, HT-NIR could eliminate the signal Mean Square Deviation by (n+1) 2/4n times, and raise SNR by (n+1)/2n1/2 times. For example, we take n=100. According to the theory above, the signal Mean Square Deviation could be eliminated by 25.5 times, and SNR could be raised by 5 times.
Our HT-NIR Analyzer adopts special models composed of 100 linearly micro-mirrors called DMA. Each micro-mirror is a 16um-margined square. There is a 1um clearance between the near two. Controlled by integrate circuit, the micro-mirrors could achieve a deflection of ±10°. When deflecting +10o, the input signal will be transmitted into testing circuit, while there is an opposite result if in its –10o situation.
Features and benefits
l Reflection: aluminum plating on the micro-mirror surface performs an excellent reflection
l Rapid transform speed: <20us
l Frame: all components are collected in a single circuit board to save space
l Good maneuverability: allowing numeral input control model without any circuit changing.
This instrument supports any modification of the DMA sizes and scales according to different coding style. However, due to its protective glass on micro-mirror, the testing wavelength is limited not more than 2750nm.
Specification
l Wavelength range: 930-1690nm(enlarge Wavelength range to 800-2500nm by changing detector)
l Spectrum bandwidth: 7nm;
l Absolute wavelength accuracy:±0.6nm
l Stray light :<0.01%
l Stability:<0.05%
l Wavelength scan model: electronic scan (no moveable components);
l Spectrum scans speed: <10ms/ channel,<1S/chart
l Spectrum collection amount: 100 wavelength collection sites
l Power supply: DC 6
l Detector: InGaAS
l Power consumption: below 5W
l Working temperature: -10~75°C
l Storage temperature: -40~85°C
l Weight: 2kg
l Dimension(L x W x H): 250 x 150 x 90mm
Features
l No moveable components, and available to vehicle or portable equipment;
l Analyzing by optic fiber with full convenience
l Small size and low power consumption
l getting power supply by USB from notebook computers
Application
Petroleum industry: online real-time monitoring and control; to test density, distillation range and chemical composing, as well as chemical and physical parameters of gasoline, coal oil, diesel oil and heavy diesel oil.
Agricultural industry: to analysis protein, amino acid, fat, amylum, water and other nutritious contents in farming products( including seed, fruit, tobacco leaf, tea leaf, etc) , processed products (coffee, flour, feedstuff, etc) and others(dairy produce, meat). Especially, it analyses the component grain and oil crops excellently.
Tobacco industry: to test the tobacco powder to appraise the component—nicotine, total sugar, reducing sugar, total nitrogen, chlorine , potassium , etc.
Pharmacy: real time and on-line detection of medicament variety and character in tablet.
Additionally, it is also well used in food/beverage industry, paper making industry, feeding stuff industry, textile industry and so on.
Adama transform near infrared Spectrometer