January 2005 - Powder/Bulk Solids
Technology Update: “Multi-Batch Loss-In-Weight Feeder”

Thayer Scale’s new multi-batch ingredient feeder is capable of up to 200 consecutive batches from a single refill. The THAYER SPIRALATOR™ LWF BATCHER is the complete solution to your high accuracy repetitive batching requirements for virtually all materials even those that are very difficult to dispense. From cohesive powders that become cylindrically bored-out by rotating augers, to irregularly shaped interlocking particles that refuse to converge under the action of gravity hopper sections, the patented THAYER Spiralator™ Vibratory Feeder assures a smooth discharging flow pattern that is the prerequisite to high batch cut-off accuracy.

THAYER Batch software includes provisions for running the system in various feeding modes such as single stage & two stage volumetric, single stage & two stage gravimetric (produces both continuous and batch accuracy), and certain combinations thereof. Special automatic adaptive features allow the batch size (setpoint) to be changed over a wide range without having to fine-tune any other associated control or cut-off parameters, allowing immediate and complete follow-up response as a slave unit to other parts of the process or to a downstream quality measurement.