Hello everybody! We are working on the development of a dual pH and dual Pt100 sensor interface for a fish farm tank control system. The tank is expected to have about 75m3 of water, a number of pumps, and feeding systems that are expected to inject noise. Since the distance between the two pH sensors is expected to be about 6m is it needed an isolation between the signal conditioning cirquits of the two sensors (like the attached cirquit)? In the attached files we are two isolation approaches and the signal conditioning cirtquit for one sensor for the approach #1. Thank you in advance,(Please visit the site to view this file) (Please visit the site to view this file)Nikos
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