Inaccurate Barometric Pressure

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I Own a  Model 01212DIA3 5 in 1 weather station, During a Recent Storm I was reporting what I thought was an accurate Barometric Pressure on Facebook. Come to Find Out The local National Weather Service reading  and the my Android Cell Phone Barometer app are within .01 In Hg! My Acurite is Barometric Pressure reading is -.30 In Hg , Totally unacceptable!  I read several threads pertaining to this and there is no calibration adj! As far as the Learning mode goes mine has been connected for months! I realize this is an inexpensive unit but it should be able to be calibrated Based on Location! What ever happened to your proposed Atlas Line?? Any Answers on a Correction?
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Tom Hoskins

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Posted 5 months ago

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George D. Nincehelser

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The "learning mode" does not affect myAcurite.  It's just affects the reading on the local display screen, and not any baro data transmitted, even if it's from that same display.

I can't tell from that model number how you are transmitting data to myAcurite.  Are you doing through the PC Connect software, or are you doing it through a SmartHUB or Access?

How you are transmitting your data will determine how you should best set your barometer.
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Tom Hoskins

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Hi George, I have a Basic unit with a Monochrome display, It has No Internet interface the data is not being transmitted.  The Barometric sensor and display are contained in the Console. It is close to .- 3 In Hg Far beyond the advertised tolerance Specification. 
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George D. Nincehelser

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Oh.  So when you said "My Acurite" you're referring to your Acurite system and not the myAcurite application itself.  Gotcha.

Some of the newer displays allow for manual adjustment, but it sounds like your particular one does not.

They typical advice if you are that far off in pressure is to reset the display and enter the learning period again.  The downside of that is that you will lose your historical data.  If I remember correctly, Acurite states that the pressure should be within 0.15inHg after the learning period is complete.  On my displays I find it is much closer than that, usually within a few hundredths of a local airport reading.

If you still can't get at least within 0.15inHg after the learning period then there might be something wrong with your baro sensor.  You might want to watch it to see if it "trends" correctly in relation to other local reports.  If not, it might be giving bad readings that are messing up the learning period.

I haven't been able to find a manual for your particular display.  If you have the correct model number from the back of the display, you should be able to find the manual on-line that will give a better idea what your options are.