Basis weight measurement system Gravimat DFI

continuousnon-destructive

Beta Sensor Gravimat FMI/DFI Measurement of basis weight (mass per unit area) / thickness /density The beta sensor measures grammage and material thickness by means of isotope rays The sensor can be used in the Qualiscan QMS-12 web gauging system. Transmission of beta rays The weight monitoring and control system measures the weight continuously, without contact, destruction-free and on moving product. The measurement is based on the attenuation of rays from a radioactive isotope through the substrate located in the measuring gap. This attenuation in intensity is an indication of the weight of the product. The Gravimat uses a target weight to reduce the range of different sqm weights and thereby ensure a more consistent product. Customer benefits Non-destructive, continuous determination of the weight per unit area of product webs Highly stable and accurate measurement along with a minimum need to calibrate The DFI allows wider measurement gaps and avoids damage to soft webs or wet coatings Product Highlights Intelligent sensor with ultrafast microprocessor for preprocessing measurements Precise measurements as a result of using extremely efficient beta radiation detectors Four temperature-compensation sensors along with air pressure compensation