The signal indicates that this field is adjustable
Flow rate unit is selectable from g/min、g/s、 Kg/min、 Kg/h、
Nm3/h、Nm3/min、NL/h、NL/min、SCFM
Cumulative flow unit could be one of:
g、Kg、Nm3、NL、CFM，
The cumulative flow unit is changed with the flow rate unit setting and therefore does not need to be set separately.
The screen display is as follows:
