User Manual

21
4.2.5 Influence of the temperature on the relative humidity measurement
Relative humidity (%)
100
±5
±5
±5
±4
±4
±3
±4
±4
±4
±4
±4
±4
±4
±5
90
±5
±5
±4
±3
±2
±2
±2
±3
±3
±3
±3
±4
±4
±4
±5
±4
±4
±3
±2
±2
±2
±3
±3
±3
±3
±4
±4
±4
80
±4
±4
±4
±3
±2
±2
±2
±3
±3
±3
±3
±3
±3
±4
±4
±4
±4
±3
±2
±2
±2
±3
±3
±3
±3
±3
±3
±3
70
±4
±4
±4
±3
±2
±2
±2
±3
±3
±3
±3
±3
±3
±3
±4
±4
±3
±3
±2
±2
±2
±2
±3
±3
±3
±3
±3
±3
60
±4
±3
±3
±2
±2
±2
±2
±2
±2
±2
±2
±2
±2
±3
±4
±2
±2
±2
±2
±2
±2
±2
±2
±2
±2
±2
±2
±3
50
±4
±2
±2
±2
±2
±2
±2
±2
±2
±2
±2
±2
±2
±3
±4
±2
±2
±2
±2
±2
±2
±2
±2
±2
±2
±2
±2
±3
40
±4
±2
±2
±2
±2
±2
±2
±2
±2
±2
±2
±2
±2
±3
±4
±3
±3
±2
±2
±2
±2
±2
±2
±2
±2
±2
±2
±3
30
±4
±3
±3
±2
±2
±2
±2
±2
±2
±2
±2
±2
±2
±3
±4
±4
±3
±2
±2
±2
±2
±2
±2
±2
±2
±2
±2
±3
20
±4
±4
±4
±3
±2
±2
±2
±3
±3
±3
±3
±3
±3
±3
±5
±4
±4
±3
±2
±2
±2
±3
±3
±3
±3
±3
±4
±4
10
±8
±5
±5
±4
±3
±2
±3
±4
±4
±4
±4
±4
±4
±4
±8
±8
±8
±6
±5
±3
±5
±5
±5
±5
±5
±5
±5
±5
0
0 10 20 30 40 50 60 70
Temperature (°C)
4.3 MEASUREMENT MODES
Measurement
modes
Displayed value Rate of display of CO
2
values
Rate of polling of the temperature
and relative humidity sensors
Portable
Mean of 11 successive
measurements
Every 15 seconds Every 2 seconds
1D and 3D Mean Every minute Every 2 seconds
ECO Instantaneous, not averaged Every 10 minutes Every 5 seconds
P_REC Mean User-programmable User-programmable
4.4 POWER SUPPLY
Batteries: 2x1.5V AA/LR6
Mean battery life (without backlighting and Bluetooth):
 In portable mode: 15 days
 In 1D 3D mode: 45 days
 In ECO mode: approximately 1 year
 In P_REC 10 minutes mode: 45 days
It is possible to use rechargeable storage batteries but the life between charges will be shorter.
Connected to mains using the mains--micro USB adapter provided. The batteries are not used while the device is connected to
mains.