VASCO – VAriable Speed COntroller, in addition to other control modes, performs the operation at constant differential pressure by using a differential pressure sensor or using 2 pressure sensors installed in the suction and delivery sides of the pump.
Difference value is calculated by itself from the two values read.
This solution enables significant cost savings as well as providing protection against cavitation (by setting a minimum alarm pressure on the suction side) and against overpressure (by setting a maximum pressure alarm on the delivery side).
Constant differential pressure control can be extended to operation in a group, i.e. twin pump application.
COMBO system ensures alternation of the pumps during operation to average the pumps’ wear and easily plan maintenance operations.
In systems characterized by high drops in pressure, the device performs the proportional differential pressure control to maximise energy saving.
