| abstract |
A device and a process for measuring resonant frequency and dissipation factor of a piezoelectric resonator are presented. After exciting the said resonator to oscillation, the driving power to the said oscillator is turned off after which the decay of the oscillation of the resonator is recorded and used to give a measure of at least one of said resonators properties: dissipation factor, changes in said dissipation factor, resonant frequency, and changes in said resonant frequency. |