Chapter 6 _______________________________________________________________ Calibration
6.
Insert the probe into the measurement hole of the NaCl chamber.
Wait for 20 to 40 minutes.
7.
Check the temperature and read the closest corresponding RH
value in the calibration table. Give the value and acknowledge it
with enter.
RH : 76.00 Ref2 ? 75.5 <cr>
>
8.
Check again the reading at the first point and repeat the procedure
if necessary.
One Point Calibration
CRH xx.xx yy.yy
xx.xx =
current humidity
yy.yy =
offset calibration
Example of performing the offset calibration in one reference point:
>crh 54.63 2.3
>
Use an accurate and calibrated reference only.
Gain Calibration
CRH 0 0 xx.xx yy.yy
xx.xx =
current humidity
yy.yy =
correction (RH
ref
-RH
measured
)
Example of performing the gain calibration in one reference point:
>crh 0 0 73.60 1.7
>
Use an accurate and calibrated reference only.
VAISALA _______________________________________________________________________ 33