Humidistat Accuracy

[Don]

Hi Terry,

One reason you are getting weird readings is that the dc controller was
never intended for high wattage units like stand alone dehumidifiers. I
suspect that each time the unit cycles the contacts inside "weld"
themselves together giving you a much higher *off* cycle.

Where did you get your "high end" humidstat?

At 10:16 AM 12/1/02 -0500, you wrote:
>The sling hygrometer is fine for the room RH, but not much use to
determine the RH right next to the underside of the soundboard (unless you
have a 9' Brambach with no framing!). Before I bought my high-end
hygrometer, I had run my shop dehumidifier off several regular DC
humidistats and several "DRY" DC humidistats. The regular ones would turn
the dehumidifier on around 60% to 65%. The "DRY" ones would be a bit
better, switching the dehumidifier on in the upper 50%s.

Regards,
Don Rose, B.Mus., A.M.U.S., A.MUS., R.M.T., R.P.T. Tuner for the Center of
the Arts

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