Vaisala HMP46 - Manual (Page 56)

HMI41 AND PROBES
Operating Manual
M210316EN-A
52
2.2 Two-point humidity calibration
RH
set min max hyst hold Lo bat Hi
P Pa h g/m
T
Td °C °F
°C °F
% Turn the HMI41 indicator on. Within 1-2 seconds
press simultaneously buttons MODE and HOLD
until the text SEtUP appears.
Wait a few seconds.
set
°C
Press ENTER eight times.
set
Press MODE three times.
RH
set
Press ENTER to activate two point humidity
calibration.
RH
set
%
Lo
The lower reference reading stored in the HMI41
memory is blinking. Change it to the correct value
(see calibration table) with buttons ▲ or ▼. Press
ENTER.
RH %
Lo
The indicator shows the value that the probe is
currently measuring. Wait at least10 minutes for
the reading to stabilize and acknowledge it with
ENTER. Press ENTER again to conclude the lower
point calibration.
RH
set
%
Hi
The higher reference reading stored in the HMI41
memory is blinking. Change it to the correct value
(see calibration table) with buttons ▲ or ▼. Press
ENTER.
RH %
Hi
The indicator shows the value that the probe is
currently measuring. Wait at least 10 minutes for
the reading to stabilize and acknowledge it with
ENTER. Press ENTER again to conclude the
calibration.
Calibration was successful. If it was not succesful,
some other text appears on the display (e.g. too
close, err offst or err gain). Perform the calibration
again.