Hygrometer Ratings

Don pianotuna@yahoo.com
Tue, 14 Feb 2006 12:30:10


Hi Bill,

Yes that's exactly what it means 23% + or - 3% could be as low as 20 and as
high as 26%

You will find that below 20% and above 80% most gauges + or - value will
increase quite dramatically. I've seen some that were + or - 10% so 20%
could be 10 or 30! Precision of more than + or - 5% is generally
expensive--but worth while.

At 12:19 PM 2/14/2006 -0500, you wrote:
>A quick question because I can't find it in any catalog/web pages. When a
>hygrometer is rated at ±3% between 10-90%RH, does that mean 103% or 97%
>times the stated RH on the scale, or the stated RH ± 3 (%)? I remember
>buying Pianotek's CMM880at a regional awhile back, and later at the same
>regional asking the salesperson this question, with no answer. I'm guessing
>the former, such that a stated RH of 23% could be anything between 20-26%,
>and a stated RH of 82%, anything between 79-85%.
> Bill Ballard RPTNH Chapter, P.T.G.wbps@vermontel.net
>"Trust me, you've got all the equipment, You just need to read the manual" 
>  ...........Reese Witherspoon in "Legally Blonde"+++++++++++++++++++++No
>virus found in this incoming message. Checked by AVG Free Edition. Version:
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Regards,
Don Rose, B.Mus., A.M.U.S., A.MUS., R.P.T.
Non calor sed umor est qui nobis incommodat

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