Vaisala DMT132 - Manual (Page 45)

Chapter 4 ________________________________________________________________ Operation
VAISALA _______________________________________________________________________ 43
Example (enable the LED indicator at dewpoint above 20 °C):
>alarm on 20
Alarm level : 20.000000
Saving settings...done
>
Calibration and Adjustment Commands
Commands that have to do with calibration and adjustment on the serial
line are described below. For the calibration and adjustment procedures,
see section Calibration and Adjustment on page 52.
Calibrate Humidity Measurement
Use the RHCAL command to perform a one-point or two-point humidity
(RH) calibration.
RHCAL
When performing a one-point calibration, you need to place the
transmitter in a single humidity reference with RH < 50%. Run the
command and enter the exact RH of the reference after the measurement
has stabilized. Exit the command by pressing the ESC key before
proceeding to the second point (see example 1 below). To update the
value, press ENTER without inputting a value.
For two-point calibration, the first point requires a RH < 35% humidity
reference, the second point must be RH > 50%.
Example (one-point calibration):
>rhcal
RH: 11.278554 Ref1 ? 11.3
Press any key when ready
OK
Saving settings...done
>
Example (two-point calibration):
>rhcal
RH: 11.278554 Ref1 ? 11.3
Press any key when ready
RH: 75.091213 Ref2 ? 75
OK
Saving settings...done
>