External flow sensor: Select if an external sensor is used or not.
When in use, flow information will be obtained via this sensor.
When not in use, flow information will be obtained via settings provided in the Asset Interface Configuration.

The sensor has to be current based, 4..20mA.
You have to provide the Flow values at 4mA and at 20mA. The values in between 4mA and 20mA are obtained via linear interpolation.