5 ms·
Even your unit has a trivial calibration. But in most cases you only need relative not absolute accuracy.
by gsich 6y ago
Even your unit has a trivial calibration. But in most cases you only need relative not absolute accuracy.
- MichaelZuo 6y agoYes, that’s the limitation of current technology. thankfully it’s doable with only a few minutes of attention and no tools or specialized requirements. 1000 ppm is an absolute limit, the vast majority of the population will experience measurable effects above this threshold. And it’s surprising how often that’s exceeded in normal everyday environments.