Gage pressure is indicated by pg, and is related to absolute pressure as follows: pg = p – pa, where pa is the local atmospheric pressure. Example: a car tire gauge measures a tire pressure of 32.0 psi. The local atmospheric pressure is 14.2 psi.
How to Find Gauge Pressure?
Gauge pressure is a very important concept to understand as it can be used to measure the pressure of a liquid or gas inside a container. The pressure of a liquid or gas is determined by the amount of force exerted on the walls of the container. Gauge pressure is the difference between the pressure inside and outside of the container, and it is measured in units of pounds per square inch (psi). To find gauge pressure, you will need to measure the pressure of the liquid or gas inside the container and then subtract the atmospheric pressure from it.
The first step to finding gauge pressure is to measure the pressure of the liquid or gas inside the container. This is usually done with a pressure gauge, which is a device that measures the force of a liquid or gas. Pressure gauges are often calibrated in units of psi, so you will need to make sure that the pressure gauge is calibrated in the desired unit. Pressure gauges can be found in most hardware stores.
Once you have the pressure gauge, you will need to set it up properly for the measurement. First, make sure that the pressure gauge is securely attached to the container and the container is filled with the liquid or gas. Then, make sure the pressure gauge is set to zero.
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