Temporal measurement and recording of water flow rate data over several days are required for various processes and other purposes. For many cyclic processes, a single measurement session may be sufficient to determine the flow rate profile. CJSC ‘Pipe Networks Experts’ performs flow rate measurements in pressure pipelines with portable ultrasonic flow meters and assesses the measurement accuracy of the Customer’s stationary flow meters. Measurements are performed on pipelines made of various materials, with diameters ranging from 50 mm to 1.5 m.