In the present master thesis a torsion test setup is described, which contributes to the Lorenz force anemometry. The aim of this device is to achieve a better sensibility for measuring the flow rate of low-conductivity fluid. Firstly, the tilt sensitivity of the measurement setup was tested on the tilt angle of a precise table. Also for compensating the tilt sensitivity the designed weight were used. The tilt angle was measured by an autocollimator system while the output signal from the positional sensor was measured in the form of the voltage and then converted in the angle of rotation. The factors KDW1= -0.4325 ± 0.0004 mrad/V, KDW2= -0.4288 ± 0.0005 mrad/V. In addition, the measurement set-up was guided by a gradient force to the movement, and then the output signal of the positional sensor is converted in a force. The factors for the two positon sensors are KK1= -40.0243 ± 0.0659 µN/V, KK2= -39.6740 ± 0.0681 µN/V. After the tilt sensitivity is minimized and the outputs of the positional sensors are converted into a force the long-term stability would be tested. The environment’s temperature was observed. After this long time measurement, the two standard deviations from the original signal of the first sensor S1 = 0.0537 µN, and from the filtered signal of this sensor, S1 = 0.0052 µN were calculated. The dependence of output signal to temperature was calculated from the long-term stability data obtained.