Online near-infrared measurement results in tight control of bulk density and consistent final particle dimension. This analyzer enables users to optimize moisture levels, minimize waste, and save energy. The choice of measurement location is dictated by the process and the conveying mechanisms. Measurement can be made by looking through a viewing window into the bottom of the spray dryer or before screening to implement corrective action quickly. Often, moisture measurement can be used directly in closed-loop control. If product flow is discontinuous or the material volume is low, a powder sampler is advisable. Continuous measurement can also be made over the conveyor using an air-purge assembly to keep the sensor window clean.
Process Sensors Corp.
, Milford, MA 508-473-9901 www.processsensors.com