The HySense QT 4xx is a high precision turbine flow meter which measures volumetric flow rate in stationary and mobile hydraulic equipment’s. Two MINIMESS®-test points are specially preassembled to allow both pressure and temperature sensors to be installed without shut-ting the equipment down. In comparison to traditional turbine flow meter’s, the QT4xx can withstand higher dynamic loads due to its structural design. The ISDS- functionality realizes an automatic sensor identification and parameterization in hydrotechnical instruments.