HI,
I'm trying to measure the 4 wire body impedance with dry electrodes (pure Silver disks) connected to the arms. I'm not using the bio-isolated setup, but the single chip solution. I'm however struggling to get accurate (or even close enough) reading (both on mag and phase) with the dry electrodes and could use some help. The setup looks correct since the readings I'm getting for a freq sweep from 6khz to 78khz with a wet Ag/AgCl electrode is what it's supposed to be theoretically, but the dry electrodes are not working correctly. Is there any changes in the circuit or the software required? say the changes in the sine amplitude in the software or the addition of the access resistance or the TIA changes?
I did try to change a few parameters, and the results are not comparable to the wet electrodes ones, far from it. I can share the results here if you like?
