[TowerTalk] WX Sensor Placement

[Gedas]

Very interesting. Can you take a picture of it pse? I would imagine the 
distance from the sensor to the hood makes a difference and what the 
hood is made from. I would imagine white Styrofoam may not be a bad idea 
for a sun shield. Also any height above ground suggestions etc?

Gedas, W8BYA

Gallery at http://w8bya.com
Light travels faster than sound....
This is why some people appear bright until you hear them speak.

On 3/3/2019 1:54 PM, George Dubovsky wrote:
> You pretty much have to avoid the house. As you surmise, even the 
> North side is going to be a heat source or sink. I did not start 
> getting decent readings - ones that compared to Wunderground, etc - 
> until I moved mine to a pagoda (homebrew, made from inverted, stacked 
> dollar-store soup bowls) 75' away from the house.
>
> 73,
>
> geo - n4ua
>
> On Sun, Mar 3, 2019 at 1:38 PM Gedas <w8bya at mchsi.com 
> <mailto:w8bya at mchsi.com>> wrote:
>
>     This made me wonder about sensor placement. I have had a number of
>     different wx stations and the instructions most provide for the
>     placement of the outdoor temperature sensor is to simply mount it
>     on the
>     north side of the house just under the eaves. This kind of makes
>     sense
>     as it will be away from direct sunlight but what about the heat
>     from the
>     house?
>
>     How many do this and does it work for you? Do your temperature
>     readings
>     match those or come very close to an "official" local temp like at an
>     airport.
>
>     Has anyone else noticed just how critical the placement of this
>     sensor
>     really is? I have 2-3 outside sensors in different locations and they
>     all read differently, sometimes as much as a 4F delta. I made sure
>     they
>     were all calibrated inside the house to read the same then installed
>     them outside. Once the sun goes down my readings stabilize and my
>     readings are within a degree of the "official" airport temperatures.
>     During the day, esp summer time the readings can be all over the
>     place.
>
>     I know enough to keep them out of the sun, away from objects that can
>     absorb & retain heat, off the ground at least 10' or so, not above
>     concrete, etc......and yet I see big differences. So my question is
>     where and how do people mount their temperature sensors?
>
>     Also does anyone know where and how the "official" temperature
>     sensors
>     used by the NWS are mounted in places like airports?
>
>     Gedas, W8BYA
>
>     Gallery at http://w8bya.com
>     Light travels faster than sound....
>     This is why some people appear bright until you hear them speak.
>
>     On 3/3/2019 1:19 PM, Michael Forinash wrote:
>     > I bought a Davis Weather Station for my wife, who is a
>     Weatherbird, seven years ago. As I recall, it was a six hundred
>     dollar unit. In the past seven years, the only maintenance I have
>     performed on it is remove a seed (from my neighbor’s tree) that
>     blocks the flow of moisture through its self-emptying range gauge.
>     It has a solar panel that recharges the unit’s rechargeable
>     batteries. I have yet to change them.
>     >
>     > The unit is attached to a twelve-foot pole.
>     >
>     > The installation instructions are a little vague on various
>     points, but that’s the only criticism I can make of this package.
>     Not a cheap station, but one my wife has been happy with, as the
>     base unit sits on a end table by her chair in our living room. She
>     checks the base station five or six times a day when she’s not
>     monitoring the Weather Channel or the ND DOT online.
>     >
>     > 73,
>     > Mike
>     > KB0RIA
>     >
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