When you have a question about process automation that needs a short answer, let us know with #WishIknew and #Visaya! We’ll reply with a #WishIknew post. It’ll give a quick explanation, then some related articles, videos, or reviews if you want to know more.

I wish I knew what static pressure measurement is!

To answer this question, you have to understand total pressure, static pressure, and dynamic pressure. We have a post on the difference between static and dynamic pressure here, if you want to check that out.

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Total pressure is the sum of the static and dynamic pressure. Often you can refer to it as stagnation pressure. It happens when the fluid flowing in the pipe stops; we call the force exerted the total pressure.

Dynamic pressure is the kinetic energy of the product flowing in the pipe. That one’s easy.

Finally, static pressure is the force exerted in all directions when the fluid stops or when you measure the force from the side of the pipe with the fluid flowing.

static pressure explained
courtesy of Engineered Software, Inc

You can measure static pressure with a gauge transmitter installed on the side of the tank or pipe. You can also buy devices that measure differential pressure and static pressure at the same time, using different sensors built in.

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