formulas to check pressure at hight altitud

by Jaiem Mendoza
(New york USA.)

I need to set up an air compresor at ground level and run an air house 200 feet hight. the air presure change at that hight?

Barry's Response - How much less will the air pressure outside the hose at 200 feet than it will be at the compressor level?

If that's the case, you can use a standard atmosphere calculator like the one at:

http://www.digitaldutch.com/atmoscalc/

It has the formulas to check pressure built right in.

From Sea level to 200 feet, the outside pressure drops from 101325 Pa to 100595 Pa, a difference of 730 Pascals, a drop of about 0.7 %

The two hundred feet won't make much difference.