[wxqc] VP2 Hygrothermometer

[Gary Oldham]

I believe the Davis manual and spec sheets all describe the nature of the
humidity sensor (as well as its accuracy tolerances).  The VP definitely
measures the humidity and calculates dew point from actual temperature and
humidity readings. 

Gary
CW0146

-----Original Message-----
From: wxqc-bounces at lists.gladstonefamily.net
[mailto:wxqc-bounces at lists.gladstonefamily.net] On Behalf Of Philip
Gladstone
Sent: Monday, July 10, 2006 9:20 PM
To: Discussion of weather data quality issues
Subject: Re: [wxqc] VP2 Hygrothermometer



Evan Bookbinder wrote:
> Does anyone know how the Davis Vantage Pro 2 measures the outdoor 
> dwpt/humidity?

Some of the commercial sensors actually measure RH directly using an IC
sensor. This is then converted to dewpoint using the standard formula (given
temperature).

Philip