Experimental Procedure - Fourier MultiLogPRO User Manual

8.4 Experimental Procedure

1. Leave the doors and windows of the classroom closed for at least
an hour before beginning to record data.
2. Open the MultiLogPRO Weather Station program.
3. Click the Start button to start recording.
Note: Although there is no wind flow in the first half hour the wind direction
sensor will record the direction that it is facing as a constant number.
One may move the wind direction sensor to the north (0), in this case
the curve will show 0 on the x axis and therefore the results of natural
ventilation will be easier to understand from the graph.
4. After half an hour open the doors and windows.
5. Wait a further forty minutes before analyzing the data.
6. Switch to the Offline mode.
7. Load today's data.
8. Leave only temperature, humidity, wind direction and wind speed
data by de-selecting the other sensors - click on the corresponding
buttons below the graph.
88 Experiment Notes
Figure 29: The Weather Station in the classroom.