Table 3.

Operation ranges of the various configurations of the flow/differential pressure sensor. The combination of the 15–10 mm Venturi and the 125 Pa differential pressure sensor is the most used by the authors. Note: The operational range shown here is beyond the ‘100%’ value specified by the manufacturer [8], but has shown to be relatively reliable.

		Pressure sensor:
		125 Pa	500 Pa
Venturi:	15–10 mm	$5-75L·{\mathit{min}}^{-1}$	$15-150L·{\mathit{min}}^{-1}$
	15–12 mm	$12-125L·{\mathit{min}}^{-1}$	$25-250L·{\mathit{min}}^{-1}$