Thanks Bert and Hank

No time for tea or a nap but I'm sure this will solve my ADC problem. I now have a problem with the compiler. It crashes after a couple of downloads and only works again after reloading both PBP and MPLAB. I will make a new post on these issues

Hank - Thanks for that warning on 10 bit (LH or RH Justify) because I will be using 10 bit to measure piezo pressure sensor and I will discarding the upper 1 or 2 bits to reduce the span to 8 bits. I am looking for a 0.05 Bar (peak to peak pressure fluctuation) to determine the speed of an air motor running at between 5 bar and 6 bar. 8 bit, without reducing the span, makes it a bit tight!

Thanks again and kind regards

John