Differential Pressure Meters are a class of no-moving-part flow meter whose principle of operation is based upon the Venturi Effect. These meters are typically outfitted with a transmitter, which produces a 4-20mA signal, which is linearly proportional to rate-of-flow (gpm, lpm, etc…). However, in many instances, it is also desirable to ascertain totalized flow (gallons, … Read More →