Hygrometer

[Farrell]

Hi Greg. I am not trying to directly measure moisture content (MC) of the board. Intruments for measuring wood MC only go down to 5 or 6% MC. When you are down at the extreme of most any instrument like this, the inaccuracy goes way up. Del has mentioned that they do not work well at these low MCs. 

I am trying to measure temperature and relative humidity (RH) of the air in a hot box. There are reliable charts that provide values of wood MC for various combinations of temp and RH.

Terry Farrell
  
----- Original Message ----- 
From: "Greg Newell" <gnewell@ameritech.net>
To: <pianotech@ptg.org>
Sent: Friday, August 30, 2002 3:18 PM
Subject: Re: Hygrometer


> Dave,
>          What am I missing here? Is this not, as other sling hygrometers, 
> measuring the air and not the board? Isn't Terry trying to judge the 
> moisture content of the board and not necessarily the air around it?
> 
> Greg Newell
> 
> 
> At 10:05 AM 8/30/2002, you wrote:
> >Terry:
> >
> >I have an Amprob THWD-1 that I've used for several years.  I got it for 
> >about $105.00 from a local industrial supply co.  Since I'm not cooking 
> >sounding boards I've found it to be quite good.  Check it out.
> >
> ><http://www.testmart.com/advice/advicetmp.cfm/v/001~~%2E%2E%2Fsearch%2Farchivespec%2Ecfm~~TEMP~~AMPROB~~THWD%2D1~~%20~~%20%7C1.html>http://www.testmart.com/advice/advicetmp.cfm/v/001~~%2E%2E%2Fsearch%2Farchivespec%2Ecfm~~TEMP~~AMPROB~~THWD%2D1~~%20~~%20%7C1.html
> >
> >dave
> >
> >
> >_____________________________
> >David M. Porritt
> >dporritt@mail.smu.edu
> >Meadows School of the Arts
> >Southern Methodist University
> >Dallas, TX 75275
> >_____________________________
> 
> Greg Newell
> mailto:gnewell@ameritech.net