I'm a homebrewer. I use 5, 4 legged 200 liter tanks to ferment the beer.
I would love to be able to weigh the tanks and have the signal on my PLC to see how much I have in the tanks.
Each tank weighs 40kg and if it's totally packed with beer, it weighs 250kg, which means that one leg carries a maximum of 62,5kg.
I'd like to use these very cheap load cells. It is said in the documentation that if I use two I can weigh 100kg, which is enough per leg, so I would need 8 load cells per tank.
But how do I connect the load cells, and how do I get the signal up to 5 - 10 volt for the PLC?
The wires from each leg will go to a box mounted on the tank. The box shall contain the electronics needed to join signals from the 8 load cells and send a single the 5 - 10 volt signal to the analog input port on the PLC per tank.