Hi. I recently purchased an electrical conductivity sensor from arduino see link
I was wondering if anyone has experience with extending leads on lab grade sensors or had any tips for doing so for one that will be interfacing with fluids/water. Thanks in advance!
I read the project description I am glad there is no welding involved. Being a welder was surprised it was included the description.
You can extend most leads, just remember every extra joint or connection is an other point of failure. There is heat shrink with adhesives that works well in tough service environments.
I don't know, but I bet the datasheet knows. In general, extend with caution, as it can quickly mess up accuracy.
Since that is a coaxial cable, be sure to use the appropriate connectors. I assume it is 50 ohms, but you should verify that to be sure.
If it were my setup, I would place the receiver in a suitable enclosure along with a Nano and a CAN interface. Then, I would run four wires back to the desired location, which should work reliably for over 1000 meters at a reasonable bit rate.
There are hundreds of patch cables available on Ebay, Search for "coax patch cords bnc" Pick one that is the length you need. For you project, the cable only runs DC so impedance is irrelevant. As noted, the calibration needs to be done with the patch cable in place.
These all are great, thanks. I contacted the manufacturer to see what the sensor metal is to try and match resistance with new insulated leads. I'll test "as-is" and "modified" and run calibrations on both.
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