The object that I want to measure vibration is an electric shaver. The FFT of the recorded sound shows a maximum frequency of interest of around 5khz (above which I'm not too interested). I tested with microphone. It didn't work well due to the ambient noise.
I don't think the laser doppler vibrometers would be within my budget.
Now I'm looking into contact piezo sensors/accelerometers. Having never used them, I wonder if the force of contact between the sensor and the object is a key attribute I need to control. I'm thinking about using a magnet to attach the sensor to the object.
This one here seems like something cheap and easy to experiment with:
but it seems the max frequency is only 3000hz. Is this the sampling rate? If so, then I won't be able to capture the 5khz sound right?
Anyone with experience with piezo sensors, please advise.