▶ Flowmeters measure the volume of water going through the groups, which is the water used for brewing the espresso.
▶ In those machines we can program different buttons with different volumetrics to get our espressos, so we don’t have to stop them manually.
▶ If the flowmeter is broken or blocked, the consistency of the yield of our espressos will be affected.
▶ If the yield on our group heads is inconsistent it can be or because of the grinder or because of the flowmeter. To check if it’s a problem with the flowmeter, we are going to need to remove the coffee from the equation.