27Follow the same steps for the 20 mA point.Finally, press the “mA ON” button. The current loop will be calibrated.Before making a current calibration, be sure that the ammeter used for that is showing thereal measure.7.6 VisualizationWhen the communication with the computer port is established (see section 7.2), the tab"Visualization" opens. This tab lets you view real-time flow rate as well as the liquid velocity.The current value of the analog output and the status of the digital output if configured as alarmcan also be shown.It also has messages or warnings regarding the status of the flow meter, such as empty pipe,coil errors or excessive fluid velocity.It is an intuitive tool to verify that the instrument has been installed and programmed correctly.7.7 Zero flow drift adjustmentIn the case that there is a zero flow drift (Offset), it is convenient to make an adjustment.IMPORTANT: The flowmeter is delivered with the zero flow adjusted. Do not make a newadjustment if it is not a really necessary case. An improper adjustment can impact onincorrect flow values.