Type 8719 is an instrument for liquid flow control in process technology. The
measured value provided by the sensor will be compared in the digital control
electronics with the predefined set point according to the signal; if a control
difference is present, the control value output to the proportional valve will
be modified using a PI-control algorithm. In this way, the flow can be maintained
at a fi xed value or a predefined profile can be followed, regardless of
pressure changes or other disturbances in the system. As a control element,
a proportional valve working at low friction guarantees the high sensitivity and
good control characteristics of the unit.
Type description