To ensure the longevity of the sensor in wet environments, a thin layer of conformal coating can be applied to the pins without affecting the thermal response of the device.
A conformal coating is a thin, protective coating for PCBs and other electronic components from environments that contain moisture and/or chemical contaminants.
Conformal coating can be purchased from a number of electronic retailers, a link to such a retailer can be found below:
http://ie.farnell.com/search?st=conformal%20coating
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Keywords: DS18B20+PAR
