Originally Posted by
Garage19
Simon if i wanted to digitise the output from the above 0-5 v sensor that has a range of 50 kpa what sort of resolution would i get?
I cant see why you would need digitise it ?
Normally, you would feed the output of the sensor into the PID controller and that would accept the signal and scale it to your required scale of 50 kpa.
You would set up the controller to display the range and number of decimal places (to a limit)
Depending of the resolution of the PID controller you will have the following resolutions....
8 bit 0.1953125 per bit 256 possibities
10 bit 0.048828125 per bit 1024 possibilities
16 bit 0.000762939453125 per bit 65536 possibilities
The more expensive the PID controller the higher the internal resolution.
Having said that, the controller would have a digital filter and averageing which would effectively double these ranges as measuring anything with movement will never be stable.
Even a low spec 8 bit controller will work just fine IMO.
