Accuracy & Precision; I have various SHT15 and SHT21 sensors running. All are housed in a single radiation shield about 10mm apart. They seldom show the same though the difference is fairly constant suggesting precision is OK but accuracy may be suspect. Only calibration can indicate which is accurate.
I have an SHT31 which I must get working in next few days.
I have an SHT31 which I must get working in next few days.

