Parallel plate conductivity cell design

[j.doe]

Hi, I am trying to design a parallel plate conductivity cell to use for a liquid dielectric. I need to minimize the liquid volume used. In the designs I've seen online (see example in attachment from paper DOI:10.1109/TDEI.2015.005468), the plates all protrude in the vertical axis and i was wondering if that's necessary, what the advantage of doing that is? Can I not limit this vertical protrusion of the plates to minimize the volume required without affecting the results? Thank you.

 

[Compositepro]

"the plates all protrude in the vertical axis". I do not see what you mean by this. From your drawing it appears that the two electrodes are supposed to be submerged in the test liquid. It should be possible that the bottom grounded guard ring could be made into a cup shape to hold a much smaller volume of test fluid.

 

[j.doe]

@Compositepro I mean the electrodes/guard is placed atop of a cylinder extending upward from the bottom, down from the top. Can you possibly draw your idea about the cup-shaped guard ring since i don't really see what you mean. Thanks.