This master’s thesis shows the development of a test bench for a flow sensor devices calibration. The project development will be carried out at a company, between February 2017 and July 2017. Therefore, during the project time, the test bench will be designed, developed and tested. The purpose of the test bench is the calibration for one of the products that the company is currently developing. For the product calibration, it is necessary air flowing into. For the current test bench, the calibration needs an operator to control air flow by using manual valves. However, the calibration process is long and if the operator is not on site, the calibration process may fail. So the new test bench will include three modes of operation, which will be explained for the next chapters.