Vaisala Calibration of Digital Transmitters with HMI41 - Manual (Page 22)

User's Guide ______________________________________________________________________
20 __________________________________________________________________ M210777EN-B
Insert both probes to the higher humidity. Within 1 ... 2 seconds, the
display changes automatically to show a text similar to the following:
RH %
Numbers on the first line indicate the RH measured by the transmitter,
and numbers on the second line indicate the RH measured by the
reference probe. Let the readings stabilize. If you prefer, you can
change the display to show the difference in the readings. Press
HOLD and a text similar to the following appears:
RH %
Numbers on the first line indicate how much the transmitter reading
differs from that of the HMI41 reference probe. Numbers on the
second line indicate the RH measured by the reference probe. You can
return to the previous display by pressing HOLD again.
When the readings have stabilized, press ENTER in either of these
two display modes to conclude the calibration. If the calibration has
been successful, the following text appears:
RH
The data is now stored in the transmitter memory. If the calibration
has not been successful, the following appears:
RH