Chapter 3 _______________________________________________________________ Calibration
VAISALA _______________________________________________________________________ 19
HMI41 as a Reference Meter
RH
Normally, the HMI41 reference is needed for calibration. Insert the
HMI41 probe and the transmitter probe to the lower 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 HMI41. Numbers on the second line indicate the
RH measured by the reference probe. You can return to the previous
display by pressing
HOLD
again. Let the readings stabilize. Press
ENTER
, and the following appears:
RH
Содержание HUMICAP HMI41
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