I'm looking for a scope to evaluate pressure pulses from positive displacement pumps using a 5 V piezoelectric pressure transducer. The pumping frequency will range from 100-2000 Hz and I'll be interrested in harmonics up to 20 kHz. The expected amplitude of the pressure pulses can be anywhere from +/-1% to +/-50% of the mean pressure.
My main objective is to accurately capture the magnitude and frequency of the pressure pulses. Based on the Pico selection guide, I think I need a minimum bandwidth of 100 kHz and minimum sample rate of 100 kS/s. I'm considering the ADC-216 but am concerned that the bandwidth and sample rate might be a little too close to the minimum requirements. I've also looked at the PicoScope 3224 which has significantly higher bandwidth and sample rate but has 12 bit resolution as compared with 16 bit for the ADC-216.
As is probably evident by now, I'm not sure which is more important to my application, bandwidth and sample rate or resolution.
Any help will be appreciated.