The variant of self-diagnostics of measuring instruments is considered. The measuring device is developed on the basis of LVDT-sensors. For self-diagnosis, the use of spectral analysis is suggested. A experiment was conducted. The LVDT-sensor was subjected to vibration. Based on the measured data, a spectrogram was plotted. Vibration was set by a certified measuring stand. The frequency set by the stand changed from 5 Hz to 20 Hz. The amplitude of the oscillations was from 1 mm to 2 mm.The Measuring frequency of the LVDT-sensors was 20 Hz. In the chart, the component appearing appears, which appears when the sensor mounts are loosened. A conclusion was made about the possibility application of this type of analysis during self-diagnosis of the device.

Keywords: LVDT, Microprocessor sensor, calibration, measuring instruments