PHYS 2212L Chapter Notes - Chapter Acceleration and Absolute pressure: Pressure Measurement, Atmospheric Pressure, Barometer
Document Summary
When any pressure is detected above the absolute zero of pressure, it is labeled as absolute pressure. It is measured using barometer, and it is equal to measuring pressure plus the atmospheric pressure. Absolute pressure formula (p a b s) is given by, Pabs=patm+pgauge where pgauge is gauge pressure and patm is atmospheric pressure. At sea level it is around 14. 7 pounds per square inch. Problem 1: a pressure gauge measures the pgaug e reading as 31 psi. Compute the absolute pressure that corresponds to pgauge reading. Given: patm (atmospheric pressure) = 31 psi pgauge (gauge pressure) = 14. 2 psi. Problem 2: the psia pressure instrument gives the reading as 35. 8 psi. If the atmospheric pressure is 15 psi, calculate the corresponding guage pressure. Given: atmospheric pressure p a t m = 15 psi. The gauge pressure is p g a u g e = 35. 8 psi 15 psi.
