Vaisala Calibration of Digital Transmitters with HMI41 User Manual
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Appendix A _______________________________________________Quick Reference to Calibration
VAISALA _______________________________________________________________________ 29
Display:
What to Do
Press
RH
Calibration has been successful.
ON/OFF
(disconnect the cable)
RH
Calibration has not been
successful. Perform the
calibration again.
Offset and Gain Calibrations with HMI41 as a
Terminal
Display:
What to Do
Press
RH
set min max
hyst hold
Lo bat Hi
Pabs
Pa
g/m
T
Td
°C°F
°C°F
%
HMI41 has been turned on.
Indication of the software
version (if the version is 1.02 or
more).
bat Hi
Indication of the battery voltage.
RH
Select the desired calibration
mode:
offset : humidity < 65%RH
gain : humidity > 65%RH
▲ (number up) or
▼ (number down)
ENTER
RH
%
Let the readings stabilize.
MODE
RH
set
%
Set the blinking RH reading to
the correct value (e.g. to the
equilibrium RH of the salt
solution).
▲ (number up) or
▼ (number down)
ENTER to conclude