Vaisala HMT130 - Manual (Page 39)

Chapter 4 ________________________________________________________ Serial Line Operation
VAISALA ________________________________________________________________________ 37
Restore Probe RH Factory Calibration
Use the CRHCLR to restore the probe RH factory calibration.
CRHCLR<cr>
Example:
>crhclr
OK
>
Calibrate Temperature Measurement
Use the CT command to perform a one-point or two-point temperature
(T) calibration.
CT<cr>
When performing a one-point calibration, you need to place the probe in
a single temperature reference. Run the command and enter the exact
temperature of the reference after the measurement has stabilized. Exit
the command by pressing the ESC key before proceeding to the second
point. To update the value, press ENTER without inputting a value.
For two-point calibration, the second reference point must be at least
20 ºC warmer than the first. The measurement reading for the second
point will appear when this requirement is met.
Example 1: One-point calibration
>ct
T 21.9827 Ref1 ? 22
Press ENTER to continue or ESC to exit
OK
>
Example 2: Two-point calibration
>ct
T 22.0007 Ref1 ? 22
Press ENTER to continue or ESC to exit
T 44.9847 Ref2 ? 45
OK
>
Example 3: No calibration, only updating the value
>ct
T 22.0007 Ref1 ?
T 22.0145 Ref1 ?
Calibration terminated with ESC
>