sgk111

I am measuring pressure from a pressure transducer and sampling rate is 300.

Will there be any effect on data quality if I am increasing sampling rate to 100 kS/s or 10 MS/s.

Is there any limit on maximum sampling rate so as to get good data set or increasing sampling rate results an effect in data quality.

Jason.Ng

It depends on the need of the application.

Generally one should sample the data with at least twice the sample frequency. For more detailed plot of the data, of course the higher sample rate should be used. Also the resolution of the sampling is also affect the accuracy of the sampled data.

For example if your pressure changed 100 times /second, then you should sample it at least 200 S/sec. Of course this will not give you detailed plot of the overal wave form. But if you sample it 1000 S/sec then you should be able to get a fairly clear plot about the data.

The limit on maximum sampling rate is hardware dependant. Please refer to the hardware manual for the maximum smapling rate and which method can be used, software polling, hardware interrupt or bus master.