Hello everybody,
Resolved: Called ESRI Support, we found that having 2 constants gave the equation a 0 and I had to multiply the constants together. Is there a way around this?
29.84*.90*pow(${Outlet_Size}, 2)*sqrt(${Pitot_Pressure})
turned into
26.856*pow(${Outlet_Size}, 2)*sqrt(${Pitot_Pressure})