Question

I am measuring pressure in a piping system. My gauge reads 75 PSIG. The barometer in the lab reads 30.07 in Hg.

What is the pressure in the piping system in PSIA?

Answer 1

The pressure in the piping system is approximately 76 psia

Step-by-step explanation:

The pressure in the piping system in psia, can be obtained using Pascal's Principle:

`P_(abs) = P_(gauge) + P_(atm)`

Where;

`P_(abs)` is the absolute pressure in the piping system

`P_(gauge)` is the gauge pressure in the piping system

`P_(atm)` is the atmospheric pressure

Given;

`P_(gauge)` = 75 psig

Barometric pressure = 30.07 in Hg

Converting barometric pressure to atm

1 in Hg ---------------------> 0.0334211 atm

30.07 in Hg ---------------> ?

= 30.07 X 0.0334211 atm

= 1.004973 atm

`P_(abs) = P_(gauge) + P_(atm)`

`P_(abs) = 75 + 1.004973` = 76.004973

The pressure in the piping system is approximately 76 psia