Hi Patrick, The problem with that would be that the bars would cause R.H. to plunge when there was no water. At 06:19 AM 2/16/2003 -0500, you wrote: > >On Saturday, February 15, 2003, at 10:46 PM, Don wrote: > >> This should be simple to check. All it would take is someone to measure >> pitchs on a piano in some strategic areas before a Damppchaser is >> installed >> in a dry time of the year. Then measure the piano a hour, a day, and a >> week >> after the install. Then unplug and drain the tank, and measure in an >> hour, >> a day, and a week. >> >> Shall I do this? Vote here! yea or nay? >> >> Can someone suggest a better protocol for such an experiment? > >Well, one flaw that I see in this is that temperature remains a >variable. While you have a full DC system running you have the affect >of the heating elements (both the long "drying" bar and the shorter bar >with the wicks) which will have some affect on the pitch (warmer ---> >flatter). >So I think you'd need to control for that (perhaps cycle both bars with >a timer throughout the experiment, with the only variable being the >presence or absence of water). >I think you also might want to monitor the RH (and temperature) inside >and outside the piano constantly with the data logger system that Roger >Wheelock uses (and has demoed at the Convention's CyberCafe). > >Please consider these modifications before you run your experiment. > >Patrick Draine > >_______________________________________________ >pianotech list info: https://www.moypiano.com/resources/#archives > > Regards, Don Rose, B.Mus., A.M.U.S., A.MUS., R.M.T., R.P.T. mailto:pianotuna@accesscomm.ca http://us.geocities.com/drpt1948/ 3004 Grant Rd. REGINA, SK S4S 5G7 306-352-3620 or 1-888-29t-uner
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