Topic: Atlas Temperature Accuracy

[Rgv20]

Hello Atlas owners, what do you all think of the Atlas Temperature Accuracy especially in the summer Texas heat? We have been having a scorcher down here in deep south texas and my Atlas has been running about 3 degrees higher than surrounding stations. FYI I'm surrounded by Ambient PWS, however I do have notice that Ambients run a bit higher on Dew Point readings compare to my Atlas. 

[DoctorKnow]

It depends on where I mount the sensor in my yard. The results can vary. It usually runs a degree or two higher than the Fine offset (ambient) 7 in 1 when they are mounted together.

[worachj]

Same with me. My Atlas runs 1-2° higher than my neighbor's ambient ws-2000 during the daytime. Nighttime seems to be pretty much the same.

My current replacement Atlas is running 1-2° higher than the one it replaced.

[CW2274]

No surprise, but T/H accuracy comes down to basically three things.... siting, the sensor itself, and radiation shield quality, be it passive or aspirated. Shield quality, I would think, being of concern for most, then siting, then sensor quality being last. The best sensor in the world is only as good as the other two allow.

[johndeerefarmer]

My Accurite runs 5 degrees higher (in the sun) than my Davis Vantage Vue. Pretty disappointed with it.

[DoctorKnow]

The motor is bad. It should not be that much hotter.

[johndeerefarmer]

Got two of them. One at home and one at vacation home- both run 5 degrees or so hot.

[Vasco]

Put them in the shade.

[DoctorKnow]

Got two of them. One at home and one at vacation home- both run 5 degrees or so hot.

Pop off the bottom radiation shield and be sure the motor is running. Also there is a thin fiber filter that surrounds the sensor. This can get dust build up and block air flow. I have had to clean mine more than once.

[johndeerefarmer]

On my Davis you can adjust any settings that are off with an offset. For example my humidity was off so I was able to adjust it to match my three other meters.
Accurite got that option anywhere in the settings? It's a 5 n 1

[DoctorKnow]

You can adjust them on the display, but it doesn't go out like that to WUnderground, at least it didn't used to. Also you can calibrate MyAcurite.

[daman]

Got two of them. One at home and one at vacation home- both run 5 degrees or so hot.

So you have 2 bad aspirating motors. They do not run that much hotter with a proper operating fan AND proper placement.