Vaisala HM44 - Manual (Page 13)

Chapter 4 _____________________________________________________________ Taken into use
VAISALA __________________________________________________________________________ 11
Selecting the display quantities
set
The HMI41 displays relative humidity (RH), temperature (T) and dewpoint temperature (Td)
readings. Additionally, one of the following quantities can be chosen: absolute humidity (a),
wet bulb temperature (Tw) and mixing ratio (x). The number on the display indicates the
following quantities:
0 = RH, T, Td
1 = RH, T, Td, abs
2 = RH, T, Td, Tw
3 = RH, T, Td, x
• select the number with buttons ▲ and ▼
• press ENTER and the display changes to show the setting of the pressure for
mixing ratio and wet bulb temperature calculations.
Setting the pressure for mixing ratio and wet bulb temperature
calculations
set
P Pa h
• change the pressure (in steps of 0.25 hPa) with buttons ▲ and ▼
• press ENTER; the display now changes to show the text PROBE n (n=probe
number). Change this setting only if there is no ID-marking on the indicator
label. Otherwise do not change this setting.