Instructions

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9
2.2 THE HD21ABE17 DISPLAY
HD21ABE17
2010/02/10 08:00:00
Carbon Dioxide
CO
2
600
ppm
CO 0 ppm
Patm 1000 hPa
RH 25.0 %
T 17.0 °C
1. Battery’s charge status and instrument code. In case the logging function is on, this line
shows the current logging number and the time elapsed from logging start.
2. Main quantity (in this case, CO
2
Carbon Dioxide).
3. Display of all other quantities.
4. Current date and time.
The detected and computed quantities are:
CO
2
Carbon Dioxide
ppm
CO
Carbon Monoxide
p
p
m
RH
Relative Humidity %
T
Temperatur
e
°C
–
°F
Patm
Atmospheric Pressur
e
hPa
Td
Dew Point
°C
–
°F
Tw
Wet Bulb Temperatur
e
°C
–
°F
AH
Absolute Humidity g/
m
3
r
Mixing Ratio
g/kg
H
Enthalpy
kJ/kg
1
3
4
2