What it does for you
The SpectraAlyzer grain is a Near-InfraRed spectrometer which is dedicated to analyze the composition of samples using the near infrared absorbance characteristics of the sample spectra. It is suitable for the compositional analysis of a wide variety of food products like grains, cereals, oil seeds and flour.
All possible parameters of e.g. grain products, such as protein, moisture, oil, ash, hardness and water absorption can be analyzed simultaneously. The sample is top filled directly into the sample cell of the SpectraAlyzer grain, there is no need for grinding or other sample preparation at all.
The sample will be fed through the sample chamber via a robust feeding device and automatically discharged. In order to analyze powder samples e.g. wheat flour an optional Flour Module is as accessory available.
Each analyzer can be fitted with a Test Weight Module (Bushel weight, hectoliter weight) to determine the volume to weight ratio of the sample. An automatic path length adjustment enables the user to quickly analyse a multitude of whole grain and oil seed samples. The instrument is controlled with an easy-to-use icon driven software, using a modern interface glass panel slider called COS “Central Operation Slider”, and a color TFT display with 640×480 pixels.
The innovative graphical user interface and its functions has a similar operability as
e.g. the AppIe IPod®. The user interface is made out of glass for easy hygienic cleaning and years of maintenance free operation.
A web server operating on the instrument allows the direct connection to the www (world wide web) – so results and maintenance can be done directly from Internet browsers e.g. MS Internet Explorer, Mozilla Firefox and others. The web front end allows remote browser based instrument supervision. No PC application software is necessary.
How it works
The SpectraAlyzer grain is designed for the analysis of solid bulk materials in diffuse transmittance.
The instrument takes spectra of the samples in the short-wavelength range of the near infrared (SW-NIR) radiation. In this spectral range, the absorbance of the sample material is much lower than at higher wavelengths, so that there is still sufficient light intensity left for detection even when the radiation has passed several centimeters of sample. This technique
is especially of interest when inhomogeneous samples like whole grains or bigger particles shall be analyzed.
In case of grain, it is essential to obtain spectral information from inside the kernels and to make sure that this information is sufficiently representative.
When a grain sample is illuminated/ transmitted with NIR light (NIT – Near Infrared Transmission), the radiation is partly absorbed, partly scattered and partly reflected by the grain kernels. As a result, the beam is no longer well defined in terms of geometric optics (like the transmittance characteristics of water or other clear liquids); this is why the measuring principle is
called diffuse transmittance.
The amount of light absorbed by the sample at different wavelengths is directly related to the
concentration of chemical functional groups, such as C-H; O-H, and N-H. As these concentrations are in turn related to concentrations of the parameters of
interest, for example protein, moisture or oil, property values can be determined.
The SpectraAlyzer grain is shipped with preinstalled standard calibrations for many products, parameters and countries where typical applications are:
• Grain reception/trading/malting wheat, durum wheat,rice, barley,corn, soy, malt,
green malt, rye, oats, triticale, sorghum/milo, lentils, beans, green and chick peas and others
• Flour milling wheat and rye flour, semolina, ground wheat, rice meal and flour, soy meal, corn meal and flour and others
• Oilseed crushing soybean, canola/rapeseed, sunflower (ground) and others
All calibrations provide accurate analytical values and are 100 % transferrable between instruments!