Microfluidics is a relatively new scientific discipline dealing with manipulating fluids on micro scales, with volumes typically about a few hundred nanolitres. The main challenge of this field is implementing different clinical diagnostic and pharmaceutical laboratory tasks on a chip scale, as well as developing the necessary sensors and actuators. Microfluidics is mainly based on eletrical and mechanical engineering and biology. My task is to improve the sensor module of a test system at Department of Electron Devices: implementing the control loops of a constant temperature flow sensor into the embedded control unit of the test system. My goal is to reduce the response time of the flow sensor by embedding the control algorithm. This thesis will show the steps of development and the demonstration of measurement.