Joshua, I hope you read this post by Mark. Harry
----- Original Message ---- > From: Mark Iverson <[email protected]> > To: [email protected] > Sent: Wed, June 22, 2011 1:42:07 PM > Subject: RE: [Vo]:relative humidity > > Jeff, > > Mass of water in = mass of water out > > It doesn't get any simpler. > > Everyone is assuming (wrongly) that they are using the instrument to measure >the liquid content > directly, which the instrument clearly cannot do. That is NOT what they are >doing. You obviously > didn't read my posting where I describe the simple algebra required to figure >out how this can be > done... > > The instrument DOES provide a (calculated) value for the mass of water which > is >in the form of > vapor... Its called the mixing ratio (sometimes referred to as mass ratio) > and >is displayed in > g/cubic meter, which is exactly what Galantini states... "device indicates > the >grams of water by > cubic meter of steam". From that, one can easily work backward and calculate >the mass of liquid > water using simple algebra... One can calulate the mixing ratio from the >humidity. > > I agree that this is not the most desirable method, but is valid, unless > you're >claiming that they > are violating the conservation of mass. > > -Mark >
