The FLOWSTREAM MASS FLOW METER is ideal for use with gases. No moving parts in a laminar flow element yield precise, accurate, reliable flow measurement.
The FLOWSTREAM measures flows from 1 to 1200 SCFH (1 to 566 SLPM) through a standard 1/4", 3/8" or 1/2" inlet/outlet connection, depending on flow range required.
Options include digital display, transmitted output of 4-20 mA, 0-5 VDC, 0-10 VDC, RS-232 and RS-485, and/or alarms/switching (5 ms response and NEMA-4 enclosures). It can be recalibrated at the factory for use with the standards gases- air, nitrogen, helium, argon, carbon dioxide and various other gas mixes.
Take me to the Universal Flow Monitor site for more info.