Ramsey™ Model 90-150 Low Capacity Weighbelt Feeder

Monitoring & Sampling

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Meet the high standards and greater accuracy demands of today’s food, chemical and process industries with a weigh feeder that capably handles light materials at low feed rates. The Thermo Scientific™ Ramsey™ Model 90-150 Low Capacity Weighbelt Feeder is uniquely designed and constructed to provide a consistent flow of materials, offer increased sensitivity for more accurate weighing of the lightest materials, and permit quick and easy cleaning and maintenance. These features work together to augment the performance of your process and improve your bottom line


Product Size -
Accuracy ±0.25% to 1% of set rate at 2 sigma, based on approved applications and test requirements
Belt Load (English) 2 lb/ft to 20 lb/ft
Belt Load (Metric) 3 kg/m to 29.8 kg/m
Belt Endless polyester/monofilament carcass with FDA/USDA covers suitable for the application. Other belts available depending on application.
Conveyor Cantilevered frame and quick release take-up for easy belt removal. Stainless steel construction. Customer may specify belt removal on either the left or right side.
Digital Speed Sensor Housing Weather-tight, epoxy finish, cast aluminum
Digital Speed Sensor Mounting Direct to 15.88 mm (0.625 in) diameter stub shaft on tail pulley, bend pulley, or return roll
Digital Speed Sensor Type Digital, brushless
Feed Rate 54.4 kg/hr to 22,680 kg/hr at 801 kg/m3 (120 lb/hr to 50,000 lb/hr at 50 lb/ft3) material
Head Pulley 38.1 mm (1.5 in) diameter stainless steel with special chisel-shaped configuration
Hysteresis 0.02% rated output
Idlers 25.4 mm (1 in) diameter stainless steel with sealed bearings
Item Description Ramsey Model 90-150  Low Capacity Weighbelt Feeder
Length (English) Feeder 36 in to 72 in centerline of inlet to centerline of discharge
Length (Metric) Feeder 914 mm to 1,829 mm centerline of inlet to centerline of discharge
Load Cell Excitation 10 VAC/DC recommended, 20 VAC/DC maximum
Load Cells Dual, low capacity bending beam transducers
Nonlinearity 0.02% rated output
Repeatability 0.01% rated output
Scale Weightbridge Dual load cell, single-idler, pivotless full-floating weighbridge
Speed Reducer Motovario or equal shaft mount
Temperature Zero: 0.0014% rated output/°C (0.0008% rated output/°F
Sensitivity Span: 0.0014% load/°C (0.0008% load/°F)
Weight Span 273 mm (10.75 in) typical
Width (English) Belt 12 in, 18 in, 24 in
Width (Metric) Belt 305 mm, 457 mm, 610 mm

Features and Benefits

  • Unique Head Pulley Configuration: The chisel-shaped pulley configuration on the discharge end of the belt provides an even, consistent flow of difficult process materials off of the belt
  • Tail Drive Arrangement: This reduces carry-side belt tensions to provide greater sensitivity for more accurate weighing of the lightest materials.
  • Cantilever Design: This feature permits quick and easy belt removal for cleaning and maintenance.
  • Flow Rates: 54 kg (120 lb) per hour up to 22,680 kg (50,000 lb) per hour, and belt loadings of 3 kg/m (2 lb/ft) to 30 kg/m (20 lb/ft).
  • Choice of Belt Widths: This weighbelt feeder is available in belt widths from 305 mm (12 in) to 610 mm (24 in).
  • Various Feeder Lengths: Customize your feeder length to fit your application, from 914 mm (36 in) to 1829 mm (72 in) centerline inlet to centerline of discharge
  • Dual load Cell Scale: Dual load cells enable a higher degree of response to material weight variations
  • Stainless Steel Construction: Stainless steel provides improved corrosion resistance and washdown capabilities