KERN MLS 50-3IR160 Instruction Manual

Contents

KERN MLS 50-3IR160 Instruction Manual Manual pdf 57 page image

MLS-BA-defsi-0713 12313 General issues concerning moisture analyzing13.1 ApplicationWherever in a manufacturing process moisture is extracted from or added toproducts, fast determination of the moisture content is immensely important. Forinnumerable products the content of moisture is a quality feature as well as animportant cost factor. When dealing with industrial or agricultural products as well aschemical products or products from the food industry, fixed limits often apply for thecontent of moisture, which are defined in supply agreements and standards.13.2 Sample materialSamples with the following characteristics can generally be analyzed easily:♦ Grainy to powdery solids that can be poured♦ Thermally stable materials that emanate the moisture to be analyzed easily,without evaporating the other substances♦ Liquids that evaporate to dry matter without formation of filmIt may be difficult to analyze a sample that is:♦ Viscous/sticky♦ Tends to form a crust or a film when drying♦ Disintegrates easily when heated or emanate variouscomponents13.3 Sample preparationIn many cases, special sample preparation is not necessary. However, coarse solids,e.g. kernels or grains should be ground.The duration of the drying process as well as the achievable exactness areconsiderably influenced by the distribution of the sample. This results in tworequirements working in opposite directions:The lighter the poured material, the shorter is the time the drying process will take;and the heavier the poured material the more exact the result will be.