Humidistat for Wood conditioning box

[Farrell]

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That web site states "The differential between the on and off points is =
fixed at 5% RH", which means the environment will vary 5%, depending on =
where it is in the on/off cycle. A decent thermostat will keep the =
environment within a degree or so and thus keeps the RH next to =
perfectly constant.=20

I had considered this subject humidistat and others also. I'm glad I =
stuck with the simple thermostat. It reall is easy to use and works very =
well.

Terry Farrell

----- Original Message -----=20

>> I found this humidistat that I would use for a wood conditioning box=20
>> that seems to be fairly good but expensive ($290).  Anyone have any=20
>> experience with it or can you suggest one that works as well for less =

>> $$$.  It=92s the RHC that I=92m looking at=97scroll down to the =
second unit.=20
>>=20
>> http://www.greenair.com/humidistat.htm
>>=20
>> David Love
>=20
>=20
> If you're conditioning wood for soundboard building, +-5%RH is=20
> pretty miserable accuracy. If you set it at 30%RH and 90=B0F looking=20
> for 6%MC, you could get anywhere from 5.2%-6.7%. Of course, if=20
> that's just calibration accuracy, and repeatability within a narrow=20
> range is good (which they never seem to think is important enough to=20
> mention) you can offset the reading and be pretty close. I assume=20
> that's what the mentioned 5% "set differential" is for. So even a=20
> cheap humidistat can work well if it makes the same mistake with=20
> dependable repeatability.
>=20
> Ron N

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