We examine transverse vibrations of vibration sensor sensitive element. A string or a rod is used as sensitive element model. We analyzed how dimensional tolerances effect on geometry, imperfections in the cross-sectional shape and how magnetic field effect on vibration frequency. Vibration frequency determination is carried out in deterministic and probabilistic formulation. Recommendations to ensure the stability of functional characteristics with the sensor parameters and parameters of technological process. The work performed allowed to reduce the variation of the functional characteristics of the sensor, which in turn should provide an increase in the number of yield of effective in the manufacture of sensors. On the basis of data obtained as a result of the analysis, there were certain basic provisions of the development of an information system for the calculations in order to reduce variations in the functional characteristics of the vibration sensor and to improve production efficiency.