How do gas meters measure how much gas you use if gas can be compressed? (unlike water)

Question

How do gas meters measure how much gas you use if gas can be compressed? (unlike water)

In: Engineering

Answer 1

Because the gas is supplied at a set pressure.

There’s a flow meter that reads the amount of gas that’s gone through it.

So given a set specific pressure and a reading of how much has gone through it’s very easy to know just how much gas has been used.