VTSYIQI Ultrasonic Flow Meters Flowmeter TUF-2000M+TM-1 DN50-700mm 1.97-27.56in with Module Type Clamp-On Transducers TM-1

* Since the couplant is liquid, It's suggest you use Molybdenum Disulfide instead. TM-1 Transducer (DN50-700mm) Digital Water Flow Meter * Linearity: Better than 0.5% * Repeatability: 0.20% * Accuracy: About 1% * Communication Interface: RS-485