The Aalborg GFM mass flow meter is a low cost solution to thermal mass flow metering for gases . The design combines the convenience and accuracy of a conventional mass flow meter with low costs previously unattainable .

Each Aalborg GFM mass flow meter incorporates an advanced straight tube sensor in conjunction with flow passage elements constructed of aluminum and brass for non-corrosive gases or 316 stainless steel for corrosive applications . Compact and self-contained, the meters are designed to read flow rates of gases. The rugged design coupled with instrumentation-grade accuracy provides a versatile and economical means of flow control .

The mechanical layout includes an LCD readout built into the top of the transducer. This readout module is tiltable over 90 degrees to provide optimal reading comfort and is also readily removable for remote reading installations. The GFM series is available with flow ranges from 10 sccm to 1000 slm N2. Gases are connected via 1/4", 3/8", and 1/2" compression fittings and 3/4" FNPT fittings. Output signals of 0-5 Vdc and 4-20 mA are standard, and a totalizer option is available .