http://thermo-diagnostics.com/files/Steam_Distribution_Quality.pdf
talks about the measurement of steam quality.
Page 3 and 4 show a method of measuring steam quality. It does not
involve using a relative humidity meter, which, to me, looks like a
fish bicycle for this measurement. An RH meter, in steam of any
quality, as long as it is at the boiling point, will show 100% RH, it seems.
I got a manual for the Testo 650.
https://go.testo.de/online/abaxx-?$part=PORTAL.INT.Applications.active-area.default.Common.Manuals&$event=changeDir&id=13
The manual I needed is linked from this page, it's 782 KB (the other
manual is in German). To get this page to display, I had to register
as a user with the web site.
The manual doesn't mention "enthalpy." However, there is a parameter
that is measured, "aw." The chapter begins on page 28 of the manual.
"aw value measurement" -- "aw" is in lower case and refers to "water
activity," and the primary interest is with bacteria. The test
procedure is complex and involves weighing water using the "dry and
weigh method." This is obviously not what was done with the Rossi measurements.
"aw value" does show total water content in some way. But that's not
this application, and water content is being measured for solids, if
I read this correctly. A special device is used, filled with the
material to be measured and sealed, pressure tight.
The mystery increases, it is not going away yet.
What this boils down to (heh!) is that there are aspects of the
demonstrations that simply raise questions rather than answering
them. These demonstrations, alone, cannot be considered to be
conclusive, given these questions. Some, putting together information
from many sources, are personally convinced, others, perhaps without
access to all that information, are not convinced.
I will say this: I'm not seeing anyone with extensive information
outside of public channels who is saying, "Stay Away! Fraud!" But I'm
not sure what that means.
Let's see what Defkalion announces!
I suppose I could eat some popcorn, if there is lots of butter on it.
