3 ms·
The linked post isn’t great. But a CO2 monitor is one of the more interesting gadgets I’ve purchased in recent years. Left to it’s own devices, my house levels
by D13Fd 4y ago
The linked post isn’t great. But a CO2 monitor is one of the more interesting gadgets I’ve purchased in recent years. Left to it’s own devices, my house levels out at around 1500 ppm CO2. But turn on a bathroom fan on the other side of the house, and you can see the CO2 level drop pretty rapidly. It’s neat.
- tuatoru 4y ago> around 1500 How do you know? Did you send your meter to a certified lab for calibration? With uncalibrated meters all you can tell after some experience is "probably higher than before", "probably lower than before". Consumer grade meters are worse.
- D13Fd 4y agoIs it important the the reading is precisely correct for my use? It doesn't seem so. How do you know your thermometer is calibrated? Your thermostat? Your speedometer? Did you have your computer monitor calibrated by a professional? The CO2 meter has a self-calibration function that I've used that calibrates it to the baseline known outdoor PPM. Indoors, it is clearly responsive to the environment. And the readings correlate with noticeable changes in air quality. The primary interesting part about it is that it gives a clear indication of how long it takes for the air in the house to be exchanged by the vent fan and return to the outdoor PPM. I don't see how precise calibration really matters for this use case.