F-Series flow transducers measure gas flows as low as 2 scfh, with a real-time output of 0 to 10 V or 4 to 20 mA.
The transducers measure flow by gauging the pressure change when a gas passes through a special venturi orifice. Output is linear over the flow range. The device comes in a rugged NEMA-4 housing.
Proportion-Air Inc., Box 218, McCordsville, IN 46055, (317) 335-2602, proportionair.com