Three measurements on the same rotating machine were taken for testing the instrument response. The first measurement was taken without modifying the machine.
The second test was taken adding weight to a certain place on the machine, for creating an imbalance. It can be clearly seen an increase in the magnitude of the acceleration, both in time domain and frequency domain.
Finally, more weight was added to increase the imbalance and a third
measurement was made. Again, an increase in the acceleration
amplitude is observed.
From the test results, it can be seen that the instrument can detect the imbalance variations, and seems to be working properly.