psi is psig not psia

psi is psig not psia   (09/07/2012, 11:10 AM)

In the metric system when the (g) is omitted e.g. kPa it is presumed to be absolute. The default in English field units is that if the "a" is omitted it is presumed to mean gauge pressure. Or at least that was what I was taught in my engineering classes many years ago and have practiced for many years.