Quote:
Originally Posted by Shuksan
A hygrometer doesn't have to be adjustable to calibrate it in practice. If you determine that the display on a digital hygrometer reads 47% in a potassium carbonate test instead of 43% as it should, for example, then you know to subtract 4% from the display readings for RH values in the range that's important for guitars. That is essentially what happens when you adjust an adjustable hygrometer so that it displays the correct value. Write "-4%" on a piece of tape and stick it on the non-adjustable hygrometer as a reminder and it's calibrated.
|
No, that is not calibration, which requires more than one data point and adjustment to match all the data points.
It is plenty good enough for practical purposes.