Global Processing

Weigh belt feeder for hard-to-handle materials

August 22, 2006

Thayer Scale offers a complete line of low-capacity weigh belt feeders designed to operate accurately and reliably in harsh industrial environments with minimal maintenance. The "MXL" weigh belts are specifically designed to meter a wide variety of hard-to-handle materials, such as potato chips and cotton fiber. Weighing is done through Thayer''s patented low-deflection, non-wearing FMSS (Force Measurement Suspension System) flexure scale which measures vertical loading and can take high load directed overloads (1,000 percent). The FMSS Scale design uses counterweights to negate the tare weight of the weigh idler and the belt. 100 percent of the scale capacity is thus used to weigh material, resulting in the best possible weight signal resolution. This is especially important with low-density materials, where the material weight is only a fraction of the tare weight. Thayer''s automatic test weight mechanism provides a means for automatically applying a known test weight and going through a calibration sequence on push button demand to check scale calibration. A "foolproof" self-checking software algorithm in the feeder control instrumentation prevents erroneous calibration.