trader_4 wrote:
On Friday, November 21, 2014 8:52:22 PM UTC-5, Stormin Mormon wrote:
On 11/21/2014 8:40 PM, Tony Hwang wrote:
panes. Panel can be reused after cleaning with CLR.

Ideally, with the flow of water through, the
panel "never needs cleaning". But nothing is
perfect.

--
.
Christopher A. Young
Learn about Jesus
www.lds.org
.

The panels in those last a year to maybe 3 years, depending on
how hard the water is. For the OP:

Hi,
If your water is not hard. Digital ATD type humidity sensor hardly ever
goes out of calibration.