Bowman Industry and Manufacturing”s Venturi flowmeter provides high accuracy with ultra-low pressure drop (up to +/- 1 percent of rate at 25 percent of full scale with less than .4 percent of one-inch W.C. dropped through the entire device). Using a unique sub-Venturi flow system, the AA battery-powered device operates up to 50 hours continuously. Flowrates to 900 SLPM (mass)/LPM (volumetric) are indicated by a 4×20 character LCD display. Higher or lower flowrates are available. A zero to 10 volts DC output is accessible via 2.5 mm jack. The device is a good fit for gas/air sampling, air balancing, exhaust control, gas custody transfer, gas utilities meter calibration, HVR and analytical flowmetering applications. Advanced material coatings for aggressive gases are optional.