Our design has conductive shielding around the transducer wires and the sensor flow tube itself (to shield the transducers). Would it be best to tie that shielding to the analog front-end ground or the digital ground? I think our sources of noise are mostly external (radiated immunity), not generated by the rest of the device. This is a battery powered, handheld device so it is not tied to any external ground or signal conductors.
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