baltoche Posted May 25, 2018 Share Posted May 25, 2018 Dear All, I’d like to share an experience with the fall of potential method: if I call E the electrode under measurement (in a square arrangement of approx. 20m), P the inner Potential electrode and C the outer current electrode, I could get a flat curve of the E resistance whilst C was away from E by a distance corresponding roughly to the side of E. I was quite surprised since I thought this distance was too short and I expected a non flat resistance curve since E and C were supposed to couple with each other. Hence a question: can you theoretically get a flat curve when E and C voltage gradients still significantly overlap and, if so, does it necessarily mean that the resistance corresponding to the middle of this curve correspond to the real resistance of E to earth ? Thanks for your lights. Link to comment Share on other sites More sharing options...
studiot Posted May 25, 2018 Share Posted May 25, 2018 A sketch of the arrangement would be helpful. Link to comment Share on other sites More sharing options...
Endy0816 Posted May 25, 2018 Share Posted May 25, 2018 Are you looking at two earth grounds? Link to comment Share on other sites More sharing options...
baltoche Posted June 4, 2018 Author Share Posted June 4, 2018 Gents, Thanks for your contributions. By fall of potential method, I meant this using 3 électrodes: - E, which is the electrode to be measured - P, which is the potential electrode - C, the current electrode The testing current is impressed in E and returns through C. See attached for illustration. Regards. fall of potential.pdf Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now