dcel22 Posted January 26, 2006 Report Share Posted January 26, 2006 Can anyone help me in how I can make a homemade salinity sensor to determine the salinity of saltwater for an aquarium? Quote Link to comment Share on other sites More sharing options...
awright Posted February 3, 2006 Report Share Posted February 3, 2006 Google "conductivity meter," amd you will get a lot if information.Generally speaking, they use platimum plates to avoid corrosion and AC excitation of a full Wheatstone bridge to avoid the effect of plating on one electrode.awright Quote Link to comment Share on other sites More sharing options...
ante Posted February 3, 2006 Report Share Posted February 3, 2006 I made a conductivity sensor once from two motor brushes cast into a lump of epoxy. It worked very nicely! Quote Link to comment Share on other sites More sharing options...
ante Posted February 4, 2006 Report Share Posted February 4, 2006 http://www.partshelf.com/st2281.html$15 plus shipping. Quote Link to comment Share on other sites More sharing options...
dcel22 Posted February 9, 2006 Author Report Share Posted February 9, 2006 I took a look at the sesnor and I would like to get one that is very accurate and also something that I can use to interface with my microcontroller. I am willing to build one myself as I am new to electronics and would really like to learn some things. How exactly can I build one of these? Epoxy and liquids have been mentioned but I do not know how. I only understand the basics, but if the process is described I am sure I will understand and if not then try my hardest to. Can anyone help me? Thanks for your patience as I am a newbie. Quote Link to comment Share on other sites More sharing options...
dcel22 Posted February 9, 2006 Author Report Share Posted February 9, 2006 I am assuming that I could even buy the $15 meter and take it apart and somehow find the lead which is the actual salinity measurment, run that through an a/d and into my microcontroller? Quote Link to comment Share on other sites More sharing options...
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