No , you 're going the wrong way. This is the pressure of the steam milk bubble tube. The pressure during coffee extraction is in the left half of this instrument. In general, the digital display is from 1- 16 bar. If the coffee machine has only one meter, the left half shows the coffee extraction pressure and the right half shows the steam pipe pressure. When coffee extraction starts, the left pressure pointer will move and the normal state will return to zero. The steam pipe pressure has been kept at 0.8- 1.0. Only when the steam is continuously discharged will the pointer go up instead of down, that is, from 0.8- 1.0 to zero.