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Model 260 Series Weigh Belt Weighers/Feeders




                                                   Basic Functional Diagram
                                              [Typical Model 260(F) Weigh Belt Weigh Feeder]




                                                                  6
                                                         1
                   1. Weigh belt weigh feeder
                   2. Product storage supply
                                                                                                               2
                   3. Variable speed gearmotor drive
                                                       3
                   4. Digital belt speed sensor
                   5. Weigh idlers                                                                             4
                   6. Weighing mechanism with
                     Ratiometric Digital Weight
                     Resolver (weight sensor).
                   7. Weighed output




                                                                                    5
                                                                     7
                    NOTE: When the Model 260 is used
                         as a weigher, the variable
                         speed belt drive is replaced
                         by a constant speed drive.         Variable                 Multiprocessor
                                                             Speed
                                                           Controller                Weigh Feeder
                                                                                       Controller




             Specifications/Features

             • Three standard belt widths having the following maximum output  • A heavy-duty gearmotor drive (hollow-shaft) attaches directly
              capacities are available:                              to the shaft of the head pulley. The motor is totally enclosed.
                 – 24" Belt – 2800 cubic feet per hour              • A high resolution digital tachometer, directly coupled to the tail
                  – 30" Belt – 5200 cubic feet per hour              pulley, precisely measures actual belt speed and will also detect
                  – 36" Belt – 7100 cubic feet per hour              belt breakage/slippage.
             • Feed range is 20:1 from the maximum designed output capaci-  • Unaffected by typical in-plant vibrations and temperature varia-
              ty of the specific Model 260.                          tions.
             • A rugged, counterbalanced weighing mechanism located above  • The weigh feeder is operated by a latest state-of-the-art multi-
              the weigh belt – away from the product metering zone and dust  processor controller, totally adjustment-free.
              – easily accessible, totally enclosed and adjustment-free. This
              precision weighing system ensures optimum weight sensing by  • The standard Model 260 Series of Weigh Belt Weighers and
              only measuring vertical force (weight) via a unique dual-idler  Feeders will operate over an ambient temperature range of -10
              weighing mechanism (weighbridge).                      to 140 degrees Fahrenheit.
             • Weight is sensed by Acrison’s Ratiometric Digital  Weight  • Rugged-duty construction for durability, longevity and minimal
              Resolver which produces an extremely accurate, unamplified  maintenance requirements.
              digital output signal directly proportional-to-weight.  • Optionally available with an Automatic Belt Tracking System.
             • Equipped with a heavy-duty, multi-ply reinforced belt, vulcan-  • Optionally available for operation in hazardous environments
              ized endless and designed for long life.               (e.g., explosion proof construction).
             • Equipped with heavy-duty belt pulleys designed that provide  • Optionally available with all stainless steel construction (exclud-
              reliable belt tracking and positive traction.          ing motors, gear-reducers, bearings, etc.).
             • Equipped with multi-stage alarms to indicate belt mis-tracking.  • Optionally available with a dust collection hopper located
             • Belt scrapers ensure a clean belt both on the top and underside  beneath the main structure of the Model 260, including a prod-
              surfaces.                                              uct take-away screw conveyor (scavenger screw).
             • Designed for easy belt replacement.                  NOTE: For dimensional information, please contact Acrison.
             • Support idlers beneath the belt maintain smooth belt operation,
              ensure optimum weight sensing, and enhance belt life.The idlers
              include permanently lubricated, sealed (free-wheeling), ball bear-
              ings that provide many years of trouble-free operation.

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