Peet what’s the deal with covering them up?
Light can heat stuff up a bit and throw off readings. It’s usually not a huge deal, but if you want the best level of accuracy, a little shade like that helps
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Just as a reference, we use the BME280 sensor in our Pulse One. It’s one of the most accurate sensors available. It’s got great accuracy across a wide range of temperatures and humidity values, and has good hysteresis performance. You can learn more about why it’s the best in this study here: http://www.kandrsmith.org/RJS/Misc/Hygrometers/calib_many.html#commentary
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Ok so I waited well over 24 hrs and then changed the 4847 sensor up by .8 to match the 4848 sensor. The temp readings are the same but the humidity reading between the 2 sensors is even worse. There was a 2.5% difference before the temp adjustment but now after adjusting the temp and waiting over 12hrs there is a 3.3% difference. I’ll wait 24hrs to see if it gets better. The sensors are still face to face, at canopy level and shielded from direct light. I don’t know if this is normal but I guess I just expected greater accuracy. I thought by adjusting the temp it was suppose to bring the humidity readings closer?
Temp dictates humidity. By changing the numerical value of the temp you altered the % of humidity. Just see if they’ll switch it out for you.
Do you have a device to tell which pulse is most accurate?
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No don’t have one yet but I have one coming
Finally got them synced nicely. Very close readings. Had to change temp first, then when the humidity wasn’t changing automatically, had to change humidity too. So far so good.
Thanks to you that helped!
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Great to hear!