1. Read the pressure in inches of water from the pressure gauge. Interpolate as necessary on an analog gauge. 2. Use a calculator for speed and accuracy. Enter the pressure reading
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One psi (pounds per square inch) is 27.7 inches of water. An inch of water is a unit of pressure which will raise water one inch. A cubic inch of water weighs 0.0361 pounds, so one
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I am going to send you a link to help better explain it
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27.68 inches of water is equivalent to one pound per square inch of pressure. So, take your value of inches of water use the conversion factor to cancel your units to psi. For example
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