... small in size. Ultrasonic Flow Meter/ultrasonic flowmeter/flowmeterHand Hold Ultrasonic Flow Meter Linearity0.5%Repeatability0.2%Accuracy±1% ... 30 m/s), bidirectionalPipe Size15mm 6,000mmRate UnitsMeter, Feet, Cubic Meter, Liter, Cubic Feet, USA Gallon, Imperial Gallon, Oil Barrel, USA ... . When fully charged it will last over 10 hours of operation.100V240VAC for the chargerData LoggerBuiltin data logger ...