LOSS-IN-WEIGHT FEEDER

Mini Loss-In-Weight Feeder

The Vibra Screw Loss-In-Weight Continuous Weigh Feeder provides unparalleled versatility in handling a broad range of feeding requirements with high accuracy. These include metering fine powders and lengthy fibers, low rate applications, high temperature applications, weigh metering. Feed rates of from 2 lbs. to 24,000 lbs. per hour can be accommodated with accuracies of + or - 0.5% minute to minute at 2 sigma. Rate range is 10:1 with a single feeder.

The complete Loss-In-Weight Feeder consisting of a supply hopper or tank and metering feeder or pump is supported on a scale system. Tare weight of the mechanical equipment is balanced electronically and the controller reads only the weight of materials in the supply hopper.

The feeder or pump is driven with a variable speed motor. As material is metered, a "loss-in-weight" signal is continuously computed to provide an "actual rate" signal. This is compared with the pre-set "desired rate" signal and any variation results in a correction being applied by the controller, thus maintaining an accurate discharge rate. As the supply hopper reaches a predetermined low level, the drive motor automatically locks into a rate disturbance mode and continues to discharge material volumetrically. A fast refill cycle recharges the hopper to a preset high level and the "loss-in-weight" cycle resumes. The actual rate can be integrated with respect to time and the amount of material discharged displayed on the totalizer.

• Handles floodable, hot and otherwise difficult materials
• Unaffected by dust and material accumulation
• Works well at low feed rates
• No transportation lag--entire weight is sensed at all times
• No load cell zero calibration--the system does not require a zero reference point
• No dynamic calibration required--once set statically, unit is ready to run
• Feed accuracy can always be checked during normal operation and without the need for sampling

The 2160 LIW rate controller utilizes state of the art electronics combined with a user friendly menu driven software. The 2160 has auto tuning and rate control made easy through a membrane key pad and a 4 line by 20 character back-lit menu driven display. 1,000,000 counts of resolution and a revolutionary process of deciphering actual weight from feeder vibration and plant noise, provide accurate continuous rate control for both solids and liquids. Rate Exception Control is initiated by large deviations in flow rate allowing for manual refill on demand. The controller comes standard with a Nema 4 (water proof) front panel, secure memory module, batch capability, auto refill with high and low alarms, rate of flow alarms, and bi-directional RS-232 communication, plus much more. Optional I/O for continuous rate, batch control and RS-422 converter is available in a wide variety of configurations.

Need a Budget Quotation? - Complete the this request form.

J. L. Horst, Inc.

P. O. Box 1286

Mars, PA 16046

Phone: (724) 935-1590

Fax: (724) 935-1591

E-Mail: jhorst@nauticom.net

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This page was revised by Joseph L. Horst on August 3, 1998.