I'm just curious if it is possible to come up with a calculation for GPM and/or pressure given RPM and watts used, as reported by an Intelliflo VS pump. Obviously pressure and head come into play, but the Intelliflo VF pumps seem to be able to do this. Do the VF pumps have some additional sensors to measure flow rate and/or pressure to report these values, or is there some calculation that can be done given a series of RPM and watts used values? I've seen the charts published by Pentair for dynamic head vs. flow at different RPM values, but it would seem that GPM could be determined simply by knowing the power usage at a given rotational velocity. Am I right or wrong about this?

BTW, please forgive me as I know similar questions have been addressed in the past. However, I just cannot seem to find the answer despite many posts related to this.

Thanks!