Where did the RH Go

[Sarah Fox]

Hi Don,

Well, you say my system shouldn't work, but my hygrometer, mounted 1"
beneath the soundboard, says differently.  The recorded high and low RH,
stored in memory, are 45% and 37%, respectively, throughout the previous 3
months.  As I said before, I'm running on lower humidity now, owing to the
window condensation I would otherwise have.  Currently (over the past few
weeks), I'm operating in the 37 - 39% RH range.

I do agree that 1 gal/day won't cut it.  However, 10 gal/day is excessive.
I'm in a rather cold climate and am stabilizing my humidity with about 3
gal/day.  I'm running a 2.5 gal/da ultrasonic unit (humidistatically
controlled), supplemented as needed with a steam vaporizer.

Incidentally, my humidity is applied evenly to the entirety of *both* sides
of the soundboard *and* action *and* pinblock.  Honestly, how does DC claim
to do that with one of its little buckets?!

Peace,
Sarah




----- Original Message ----- 
From: "Don" <pianotuna@accesscomm.ca>
To: "Pianotech" <pianotech@ptg.org>
Sent: Sunday, January 11, 2004 6:13 PM
Subject: Re: Where did the RH Go


> Hi Sarah,
>
> It isn't steam, but rather water vapor (only 8 watts for the rod) *grin*
> and with a bottom cover the DC system will make even your pianos more
> stable. And your whole house system does nothing about high summer
humidity
> levels--leading to compression set and eventual destruction (how long? who
> knows but it does finally happen)
>
> And by the way DC units work much better in an upgright if a back cover is
> used.
>
> At 11:15 PM 1/11/2004 -0500, you wrote:
>
> >A DC humidifier beneath my soundboard is quite unneccessary.  Besides
that,
> >I question whether a teensy weensy column of steam can evenly distribute
> >over the underside of a grand piano.  (I have no question that it works
well
> >in an upright.)  In contrast, whole-room/house humidification is fairly
> >stable and consistent if done well.
> >
> >Peace,
> >Sarah
>
> Regards,
> Don Rose, B.Mus., A.M.U.S., A.MUS., 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
> _______________________________________________
> pianotech list info: https://www.moypiano.com/resources/#archives