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I want to use a standard pressure transmitter near the base of a cylindrical tank to gauge water level...plain old ambient temperature, filtered well water. The tank is about 30' - 35'tall. The pressure reading will indicate the height of the water and with known tank geometry, I can calculate gallons, right? Right.
How does the transmitter need to be connected to the tank? Does the size of the fitting(s) matter?
I noted that at least one big-name manufacturer makes a transmitter specifically for this purpose, and the transmitter has a flange and diaphragm for connection to the tank. Is this necessary, or can I just tube up a regular old transmitter to a handy pipe fitting near the bottom?
If the tank is open to atmosphere at the top, do I need a differential pressure transmitter with connections at the top and bottom?
Hair-splitting accuracy isn't necessary for this application...I can easily tolerate errors of maybe a couple or three inches or so.
How does the transmitter need to be connected to the tank? Does the size of the fitting(s) matter?
I noted that at least one big-name manufacturer makes a transmitter specifically for this purpose, and the transmitter has a flange and diaphragm for connection to the tank. Is this necessary, or can I just tube up a regular old transmitter to a handy pipe fitting near the bottom?
If the tank is open to atmosphere at the top, do I need a differential pressure transmitter with connections at the top and bottom?
Hair-splitting accuracy isn't necessary for this application...I can easily tolerate errors of maybe a couple or three inches or so.