Level-volume controller of liquid-filled tanks.

To determine the amount of liquid present in the tank, the Ultrasonic transmitter is used. This generates a 4 to 20mA output signal, which is given to instrument. The display indicates the height of the liquid in the tank. By using the volume formula, the volume of the liquid is also displayed. The retransmission output related to volume is given out for SCADA software package for further processing.