Humonics Optiflow 520 Digital Flowmeter. Flow rate 0.5-500 ml/min. Powered by 9v battery.
Flowmeter model Flow Resolution Accuracy
Optiflow 420 0.10–9.99 mL/min 0.01 mL/min ±3%
10.0–50.0 mL/min 0.1 mL/min
Optiflow 570/570 Mobile 0.500–1.999 mL/min 0.004 mL/min ±3%
2.00–9.99 mL/min 0.01 mL/min
10.0–99.9 mL/min 0.1 mL/min
100–700 mL/min 1 mL/min
Optiflow 650/650 Mobile 5.0–99.9 mL/min 0.1 mL/min ±2%
0.100–0.999 L/min 0.001 L/min
1.00–5.00 L/min 0.01 L/min