Star Trace Electro Magnetic vibrators are connected to an a. c. supply system with protective conductor by means of a power unit. Power unit are required for the operation of the vibratory units at the prescribed oscillation frequency and for the continuous and practically powerless open or closed loop control of the oscillation amplitude, and hence of the delivery flow.

A complete range of modules ensures a great variety of applications, e.g. closed – loop control of the oscillation amplitude, controlled mill feeding, the integration of conveyor units in super systems controlled by a process computer.

The power units can be connected to supply systems with all the usual system voltages. Non- standard versions are available.