The deltasonic® ultrasonic flowmeters from pvt technology GmbH are increasingly being used to measure the flow of liquids. In addition to the very high precision and the simple installation, the devices of the deltasonic® series impress with an attractive price-performance ratio as well as a high processing quality. The fields of application range from feed water quantities to heat and cold quantity measurements to flow measurements for drinking water (all hygienic requirements are fulfilled).
Our ultrasonic flowmeters work according to the transit time difference method. In this method, ultrasonic pulses are transmitted through the medium in and against the direction of flow. A sound wave propagates faster in the flow direction of the measuring medium than in the opposite direction. The transit time difference is thus proportional to the mean flow velocity. The average flow velocity multiplied by the pipe cross-section gives the flow volume per time unit.
The flow velocity is calculated according to the following equation:
*For nominal widths from 15 to 20 mm, there are restrictions in accuracy due to insufficient running time