This document provides specifications for an ultrasonic flow meter that features high accuracy and repeatability of 0.5% and 0.2% respectively. It has a bilingual interface, built-in data logging capabilities, and is compatible with pipe sizes ranging from 20mm to 6000mm. Key components include transducers in standard and extended models for different pipe sizes, and the device set-up allows for modifying totalizer and communication settings through the password protected interface.