Vaisala HMM100 - Manual (Page 37)

Chapter 4 _________________________________________________________________ Operation
VAISALA ________________________________________________________________________ 35
Calibration Commands
Commands that have to do with calibration on the serial line are
described below. For the calibration procedures, see section Calibration
on page 53.
Calibrate Temperature Measurement
Use the CT command to perform a one-point or two-point temperature
(T) calibration.
CT
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 (see example 1 below). 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.
NOTE Remember to save the changes!
Example: one-point calibration
>ct
T 21.9827 Ref1 ? 22
Press any key when ready
OK
>
Example: two-point calibration
>ct
T 22.0007 Ref1 ? 22
Press any key when ready ...
T 44.9847 Ref2 ? 45
OK
>