... 3.Battery supply 4.manufacturer 5.CE Mark for flow meter Flow meter Main Features: FeaturesDescription High Accuracy measuringLinearity: better ... 2%, Accuracy: better than ±1%Non-intrusive measuringNon-intrusive, clamp-on transducer, no pressure drop, no pipe disturbance.Wide measuring ... , various oils etc. liquid which can transmit sound wave.Flow velocity range 0- ±30m/sAccuracy Better than ±1%Power ...