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Originally Posted by unregistered
the hydraulic data is straightforward and the effect of temperature can be seen,
though not really in the flow range of significance - below 1.5 gpm - with the instrumentation used
of greater interest to me was the temperature data taken at the same time:
the ambient temp was held at 25°C and the dT measured at 11.5, 5.5, and 0°C temperature difference; then run again at 15.3°C with 0°C difference
there is a temp change w/o any DUT, for higher accuracy this must be addressed
the WCing testing community might consider the use of these (cheap) crosses as a de-facto std, everyone would have the same corrections
(there is an inst offset included in these curves which could be backed out)
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Bill I need to get this straight, having difficulty re-engaging brain. I don't really understand.
Where is the water temperature measured?
The correction would be for the RTD in the "T" piece? I guess I am wondering which is right...
The hydraulic behaviour is I think real (that said without any deep investigation at all) and therefore requires no correction, just a statement of absolute water temp. ?
I am not at all up to speed here.