[Weather] 1-wire humidity sensor for outdoor use?

[Karl Uppiano]

----- Original Message ----- 
From: "Dave McGuire" <mcguire at neurotica.com>
To: "List for 1 Wire Weather Stations and devices" <weather at buoy.com>
Sent: Tuesday, November 28, 2006 1:10 PM
Subject: Re: [Weather] 1-wire humidity sensor for outdoor use?


> On Nov 28, 2006, at 3:33 PM, Karl Uppiano wrote:
>> I have had good results with mine once I shielded it from the  light. I 
>> found
>> that even indirect sunlight on a bright sunny day -- even inside a 
>> radiation
>> shield -- would cause the sensor to get all flaky. I put a small  piece 
>> of
>> black heat shrink tubing over it, leaving openings at each end for  the 
>> air
>> to circulate (i.e., I did not shrink the tubing, I just allowed it  to 
>> remain
>> loose). This sensor has been in place for about 18 months, and the 
>> original
>> one might have been OK too, if I had shielded it from the light.
>
>   The datasheets even state that the component is light sensitive.

Yes, however, I was surprised how light sensitive. IIRC, the data sheet said 
avoid direct sunlight, but mine was affected by indirect sunlight. I'm just 
saying, if your sensor is flaky, make it *really* dark.