A method/structure for remotely calibrating a product fluid flow device having one or more apertures with aggregate area Ao, where fluid flows along a fluid flow path therethrough in response to pressure differentials ΔP across the apertures. Calibration can occur on a calibration device to determine a fluid flow profile for a product device. In response to a determination that the product device is installed according to a different arrangement than used during calibration, the flow profile can be updated according to the different arrangement and provided to the product device in situ.