loss-in-weight feeder

loss-in-weight feeder

[′lȯs in ′wāt ‚fēd·ər]
(mechanical engineering)
A device to apportion the output of granulated or powdered solids at a constant rate from a feed hopper; weight-measured decrease in hopper content actuates further opening of the discharge chute to compensate for flow loss as the hopper overburden decreases; used in the chemical, fertilizer, and plastics industries.
References in periodicals archive ?
Many loss-in-weight feeders incorporate a screw as the feed device due to its wide feed-range capability.
Discharger valve can be used on new and existing silos, discharging and controlling the flow of solids from storage, or as a prefeeder for accurate gain-in-weight and loss-in-weight feeder systems and for automatic filling or packing lines.
Also showing new compact 407 Series loss-in-weight feeders and additional models of 270 Series weigh-feeder modules with "in-line" vertical configuration.
Benefits include very low deflection and no moving parts directly exposed to the material, no interruption of flow, little or no field calibration, low maintenance, superior accuracy and lower cost than a loss-in-weight feeder.
If the refill system is leaking material into the feeder during continuous operation, the loss-in-weight feeder will compensate by feeding more material.
New ProFlex C loss-in-weight feeders for powders and pellets have flexible hopper walls with external agitation, easy-to-clean extension hoppers, and a compact, off-center design that allows space-saving installation of up to eight feeders in pairs with close-fitting discharge helixes and nozzles.
loss-in-weight feeders with vibrating trays and particularly for high feed rates Brabender weigh-belt feeders are available.
The Smart Weigh Belt's improved performance and easier maintenance make it possible for processors to use weigh belt feeders in applications where loss-in-weight feeders had been their only option.
The Force Measurement Suspension System is designed to provide higher accuracy in measuring weight using conveyor belt scales, weigh belt feeders, and loss-in-weight feeders.
Loss-in-weight feeders feed multiple components at the main feed throat to facilitate polymer/additive mixing in the early stages of the process.
Products include single/twin-screw volumetric and gravimetric feeders, Bulk Solids Pump (BSP) feeders, vibratory feeders, weigh belt feeders, liquid loss-in-weight feeders, Smart Flow Meters, K4G gravimetric blenders in addition ot a complete line of Coperion K-Tron self-contained and central vacuum conveying systems, integrated controls and systems engineering services.
The Bulk Solids Pump[TM] feeder line offers three models that can be configured as volumetric or loss-in-weight feeders.