Hi,
I recently bulit a Conductivity Meter for my project, initially the conductivity was displayed as per the cell constant set by me, but over a few days the conductivity displayed is reasonably dropped by about 5 Siemens. I found that if i took the Dieelectric liquid in a small volume vessel the conductivity was properly shown. But when i used a comparatively large vessel the conductivity drops dowm by 5 Siemens. Area wise the two vessels are 1:1000 times approx.
I am using a AC generator section of 1Khz @ 2.8 VAC.
thanks in advance guys...