Differential Pressure Level Measurement

How do you measure level with a pressure transducer?

there is a way of using differential pressure transmitters to measure level. if it is an open tank,the lower side is connected to the atmosphere against the higher side connected to the base of the tank. for closed vessel,lower side connceted to the upper portion of vessel and high side to the down portion.

my question is how to get your range for the configuration of the transmitter considering the vessel height and diameter.thank you

Are you building your own from scratch or using one that is already made? If it is already made, it should come with instructions.

If you are making your own from scratch and you don't know how to do that, maybe you should reconsider!

Some more dope on the subject:

Differential pressure level measurement tutorial

Utilizing differential pressure for level measurement, is fairly straight forward. You need to know the density of the material in the vessel and it should remain constant. Using a differential device provides an output equal to the force of the material and atmosphere (or head pressure) minus the force applied by the atmosphere (or head pressure). Thus, the output is only related to the force of the material in the vessel. Any dimensions of the vessel are irrelevant.

The density of the material is usually provided in units of lb/cuft and when divided into the differential pressure reading (in units of lb/sqft), the result is feet of product above the lower pressure cell mounting point.

If your differential output is in psi, a simple formula is --

Height (ft) = Dif Pressure (psi) / [0.433 x Specific Gravity]

where specific gravity is your product density related to the density of water at temperature.

Hope this helps!