Series SI

Designed to Easily Fit Into Existing Belt or Vibratory Conveyor Line

PEMBROKE, MA -- Thayer Scale's Weigh Belt Feeder Series "SI" Insertion Weigh Belt Module is a unique feeder that has been designed to easily fit into an existing belt or vibratory conveyor line.

The "SI" comes in either "scale over" or "scale under" design. A short support framework and a 24" long "V-Guided" conveyor (12", 18" and 24" wide) makes this the only practical weighing module for insertion into a transition space between existing conveyors or equipment.

The SI Insertion Weigher uses Thayer Scale's patented model 15L precision flexure plate suspension scale with FMSS technology. The scale provides for complete mass counterbalancing of the dead load of the conveyor permitting the load sensor to react only to the net material load. This unique system is not affected by dirt, shocks or vibration, and can withstand overloads in access of 1,000 pounds without causing damage or affecting calibration. The highly advanced and extremely robust sensing technology is based on the marriage of the LVDT, embedded temperature sensing and properly linerizing and temperature compensation algorithms.

Unique benefits result from suspending a short "V-Guided" conveyor from the Thayer model 15L Force Measurement Suspension System (15L-FMSS). Since load measurements are not affected by the physical characteristics of the belting and its supporting means (stiffness, sliding friction, non-uniformity, splice effects tension/misalignment interaction, etc.) the construction of the belting and its material can be chosen on the basis of durability and belt-tracking ability without concern for accuracy compromise. Also, on new installations, the combination of the most suitable volumetric pre-feeder and the Series SI often proves the best approach considering cost, available space, and materials handling requirements.

The conveyor portion is normally 24" long and is suspended from the scale on an open cantilevered "C-Frame" pipe support, which greatly simplifies belt removal and replacement for wash down applications. Belt widths of 12", 18" and 24" are available. Because the belting is more robust than that used for "under-the-belt" load sensing feeders, and because the belt is positively tracked using a V-Guided tracking system, the operating life of the belt is substantially longer than with conventional designs. The conveyor portion can be oriented on the C-Frame to convey horizontally, upwards (20 degrees) or downward (20 degrees), in whatever configuration best suits the installation conditions. The combination of gear reducer/motor is supplied for wash down service, and is available in either constant or variable speed applications.

The "SI" Series can be supplied with Thayer instrumentation and controls to function as either a process stream weigher only, or as a flow stream controller/weigher (providing the additional controller output to regulate the upstream delivery system. Thayer's patented "SLC" (scale location compensation) features can also be supplied to move the point of measurement further downstream adjacent to associated or "slaved" equipment.

For more information, contact Thayer Scale-Hyer Industries, Inc. at 91 Schoosett St., Pembroke, MA 02359; telephone, 781-826-8101; fax, 781-826-7944; or visit the company's website at www.ThayerScale.com.

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