My AcuRite Smart Hub has incorrect barometer readings

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  • Updated 5 months ago
My model 09150M AcuRite smarthub is giving me highly incorrect barometer readings. In the MyAcuRite app, the readings are around 11.8 inHG, give or take an inch. This is a highly inaccurate and impossible barometric pressure reading. In the app, the pressure is set to “adjusted pressure” and my elevation is set to 6240ft which is the elevation of my town, Castle Rock, Colorado. The app is updated to version 3.1.2.1. Why is the app displaying a pressure so low and what can I do to fix this?
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Christian

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Posted 5 months ago

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George D. Nincehelser

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You might switch it to "station pressure" and see what it reads.

That will tell you if you're starting with a bad baro reading from the sensor, or if something's gone awry with the altimeter pressure calculation.
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Christian

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When I did this, I got a reading of 9.36 inHG which is even worse! Does this mean there is something wrong with the smarthub’s barometer?
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Steve U

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FWIW there is no barometer IN the smart hub or Access.  The barometer is (part of)  a Sensor
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George D. Nincehelser

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No.  Every SmartHUB and Access has its own baro sensor.  Every display has its own baro sensor, too.

There is no baro sensor in the 5n1 or Atlas sensor.
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Steve U

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I assumed :(  it was where it was logical
I just looked at the 5 in 1 specs... No barometer tolerances :o

What seems weird, is the reading appear under the 5 in 1 section of the dash.
Doubly weird, is readings INSIDE, are subject to HVAC positive pressure variations.
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George D. Nincehelser

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Inside readings are generally easier to do.  The temperature is more stable and you don't have to worry about wind gusts.  You also don't have to worry about powering the baro sensor by battery or transmit possible lengthy raw pressure parameters by radio.

There are some stations that do have outside baro sensors, but they seem to be in the minority for personal weather stations.  I do have a Weatherflow and some Bloomskys that have have outdoor baro sensors.

The pressures due to HVAC systems are generally insignificant.  You might be able to see minor changes on your graphs, but from a weather monitoring standpoint they aren't a particular problem.  Typical homes are so "leaky" that pressure differences vanish pretty quickly.  Large buildings might be a different story, though.
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George D. Nincehelser

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It could be.  I've seen them having a fixed bias before, but nothing of that magnitude.

If it's under warranty, it's definitely a replacement candidate.

If it's no longer under warranty, you can still take advantage of the $40 upgrade to an Acurite Access unit.  (the next-generation SmartHUB)
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Christian

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Ok, thanks for the help!
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Steve U

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With all the WU issues, things may have become glitched. (I found my 5 in 1 locked out and a soft reset would not un-stick that)
You might try a FULL power cycle reset.  1) disconnect the Network cable. 2) Then remove the power for a few minutes.
reconnect network, then power,
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AcuRite Rachell, Employee

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Hello Christian,
The barometric pressure readings are way too low which leads us to believe the sensor in the HUB is not registering accurately. Please power cycle your smartHUB and router. To do this, you will unplug your Ethernet cable from the router then the adapter for the HUB. After this you can unplug your router. Please leave them unplugged for about 5 minutes. When you plug them back in plug the router in first and let it completely boot up, then you can plug the Ethernet cable into the router after that the adapter. When and where was your smartHUB purchased? Thank you.