fluid level sensor

FredBlais

Hi, in the·fluid level sensor datasheet, there is this circuit but I don't understand the right part of it, can sombody explain it to me?


·

ElectricAye

Take a look at the application note that came with this etape device. I think that explains quite a lot.



www.parallax.com/Portals/0/Downloads/docs/prod/sens/eTape_AppNotes.pdf