LEEweigh can supply SCREW WEIGHERS as complete systems or retrofit existing screws by fitting a weighframe, special pivots and a speed sensor. The equipment is then connected to a suitably designed set of electronics to compute mass flow rate and bulk totalisation. The systems can be used to control prefeeders such as rotary valves.

A typical SCREWWEIGHER showing an extraction screw above and a weighscrew below, on a common support plinth. In this example the application was for feed control of cement bypass dust from 0 to 3000kg/hr.