Vaisala HMP42 - Manual (Page 14)

HMI41 AND HMP42
Operating Manual
M210317EN-A
10
4.3 HOLD-mode
In any of the previously mentioned measurement reading displays, the HOLD
button freezes the display to show the current readings, e.g. RH & T readings:
RH
hold
T °C
%
With MODE or ENTER, the display returns to the normal display mode.
If the indicator turns itself off with the automatic power-off function during
the HOLD-mode, it wakes up in the same mode when turned on again. The
'hold'-text is blinking and the indicator can be returned to the normal display
mode with any button except ON/OFF.
4.3.1 MIN-mode
If you wish to know the minimum readings that have been measured after
power up, press HOLD when the indicator is in the HOLD-mode. The
minimum readings of the currently displayed quantities are shown (if the
‘hold’-text is blinking, the HMI41 must first be returned to the normal display
mode in order to activate the MIN-mode; see Chapter 4.3 above):
RH
min
T °C
%
With MODE or ENTER, the indicator returns to the normal display mode.
4.3.2 MAX-mode
If you wish to know the maximum readings that have been measured after
power up, press HOLD when the indicator is in the MIN-mode. The maximum
readings of the currently displayed quantities are shown:
RH
max
T °C
%
The indicator returns to the normal display mode with any button except
ON/OFF.