Room Dehumidifiers vs. Dampp-Chaser

[Susan Kline]

At 11:02 PM 8/21/97 -0500, Richard Moody wrote:
>I still have not figured out how a Dampchaser can keep a zone of
>humidity different from the room the piano is in more than three
>inches away from the heat bar, or the water tank.  
>
>Richard Moody
>ps  No I havn't measured the humidity 2 inches 3 inches 14 inches 25
>inches away from a damp chaser.    Nor compared the values above and
>below the soundboard.  But some one has or is gonna ??

...............................................
Dear Richard,

In this benign climate, the whole question of humidity control is vastly
different than for most of the folks in places like New Orleans or Wichita.

However, I do tune one 3-year-old Steinway L near the coast that has two
dampp-chaser rods underneath (with humidistat, of course). I was interested
in what they really were doing, so I measured the temperature and humidity
in the room (on the left key block, to be exact) and then put the gauge on
top of a back post under the piano while I finished the tuning. One rod was
about a foot to the side, the other was about two feet in front of the
meter. I imagine the difference in readings occurs because the heat rises
and gets trapped by the sides of the piano.

In room: 70º F, 60% RH
On top of backpost: 77º F, 51% RH

Not much, but it's a start ---

Susan

.

Susan Kline 
P.O. Box 1651
Philomath, OR 97370
skline@proaxis.com