Turbulence as a measure of flow At a baffle installed in the measuring tube, the flowing medium generates alternating turbulence depending on its velocity, which is detected by a piezoceramic sensor. If the cross-section is known, the flow rate can be determined from the number of vortex shedding. This flow measurement method, known as the vortex principle, is largely independent of pressure and temperature fluctuations of the medium. It offers the production of low-cost sensors for flow measurement due to its simple constructive design. The current flow and temperature are output either as a standardized current signal (4...20 mA), as a frequency signal, switching output or via IO-Link. * Integrated temperature measurement. * Electronically rotatable multicolor display. * Optionally with rotatable G and R process connections. * Red / green color changeover for process values adjustable. * Applicable for water with and without conductivity (deionized water).