The Proportion-Air, Inc. F-series is a line of flow transducers designed specially to provide real time flow measurement of compressed gasses for many demanding applications. The Proportion-Air, Inc. F-Series design utilizes differential pressure technology to sense the pressure change across an internal venturi. This differential pressure (DP) measurement is fed into an onboard electronic circuit that converts the DP signal into a linear analog output signal which represents the flow through the F-series. The DP sensor and circuit are completely analog to offer the fastest possible response time and eliminate digital stepping often seen in flow transducers of other technologies.

Proportion-Air, Inc. F-series flow monitors are the hart of Proportion-Air's new "Real Time" flow control system Proportion-Air's electro-pneumatic controls, which have been a staple of the industry for over 20 years, can be electronically reconfigured to accept feedback from out F-series flow monitors. This combination of components provides a complete flow control package for flow ranges as low as 2 to 20scfh (0.016 to 0.16 L/Sec) to 250scfm (118 L/Sec). Because the feedback is "Real Time" the results are a series of flow controllers that respond instantly to change in command or system fluctuations. This fast response allows manufacturers and machine builders to use flow control in applications using high cycle rates "Real Time" response can even allow for increased cycle rates thus higher productivity.