This is a similar question as post viewtopic.php?f=3&t=2274
and I'm wondering if your recommendation is the same.
My water tank is an above ground galvanized steel tank about 8 feet tall by 7 feet in diameter holding about 3000 gallons water. Basically I want to know what percent the tank is filled. It has an inlet/outlet valve at the bottom which feeds a 1" PVC pipe. Water passes in both directions through the pipe according to whether the wells are pumping or not.
I have the phidget SBC board. It is about 100 feet from the tank to the SBC.
Is your recommendation the same. You recommended http://rocky.digikey.com/weblib/Measure ... Series.pdf
What about this device: http://www.meas-spec.com/downloads/LM_Series.pdf
Could either of these pressure transducer devices be installed with the same PVC pipe by using a T fitting and having the transducer off to the side? I don't want to go inside the tank and install it at the bottom and have to maintain it there. I guess I could drill a hole in the side of the tank and install the transducer there but I would have to empty the tank. Putting the transducer in the line below the tank has the advantage that there is a shut-off valve at the tank that the PVC pipe goes into.
Do the wires from the transducer feed directly into the SBC sensor input, I mean there is not an additional phidget sensor I need, right?
I have 12 V DC available and the PDF link you gave says this should work.
How many wires do I run to the tank for the sensor and electrical needs and what kind of wire should I use?