Source: Siemens Milltronics Process Instruments Inc.
The Series 400 Weighfeeders are used to add lime during the water treatment process
The Series 400 Weighfeeders are used to add lime during the water treatment process. The lime is added to adjust the pH of the water. The remote set point for rate control on the weigh feeder can be slaved to an online pH meter.

The weighfeeder delivers the lime to the water in a controlled, uniform flow rate with +/- 0.5% accuracy.

The constant belt-tensioning device allows the Series 400 weighfeeder to be used in low density and low flowrate applications. It provides the capability for relative light belt loading. In addition, the product also has a large platform weighbridge area that offers a greater size of sample material.


  • Accuracy:
±0.5% to ±0.25%
  • Operating Temperature: -10 to 40°C (14 to 104°F)
  • Materials: Mild steel or stainless steel contact surfaces.
  • Load Cells: One (1) single point, aluminium platform (standard). Stainless steel for corrosive and wash down environments (optional).
  • Speed Sensor: Optical encoder, driven pulley mounted.
  • Framework: Precision machined, stainless or mild steel. Cantilevered design for easy belt removal.
  • Pulleys: 115mm (4.5") diameter, crowned and lagged.
  • Belt Tension: Counter-weighted stainless tensioning idler for consistent tension, required for high accuracy weighing.
  • Belting: Polyester carcass with polyurethane top cover and endless finger splice for maximum weighing consistency (standard). Variety of different belts for specific applications (optional).
  • Drive: Standard 0.19 kW (0.25 hp) AC or DC gear motor with chain and sprocket.
  • Washdown: 0.19 kW (0.25 hp) AC or DC washdown duty motor with direct coupled shaft or flange mounted gear reducer. Custom configurations available.
  • Belt Cleaning: Delrin blade type with counterweight at the head pulley for cleaning product side of belt. Return plow optional.

    Siemens Milltronics Process Instruments Inc., 1954 Technology Dr., Peterborough, ON K9J 7B1. Tel: 705-745-2431; Fax: 705-741-0466.