Wind pressure measurements

[Guest]

I know that pressure (in water, air etc.) is measured in pascals, but why are the wind pressures for air entering organ pipes measured in inches/mm?

[Menschenstimme]

Re: Wind pressure measurements



Wind pressure in a pipe organ is measure in Inches of Water Column. It can literally be measured with a simple device that uses water in a plastic (or glass) tube and a ruler or with a mechanical pressure gauge connected to a tube that has a wooden "pipe foot" at the end of a hose.

Hope this helps!

[odellorgans]

Re: Wind pressure measurements

I suspect that the reason we use continue to use water column is that by most standards the pressures used in organbuilding are very low. Also, the methods of measurement we use pre-date most modern scientific systems.

For your reference, 1 inch of water colum is only 0.036 psi, which works out to about 241 Pascals.