Campbell CM10K Spezifikationen PDF herunterladen (Seite 20)

7. Establish communication with the data logger: Select CR1000 on the left and hit the

Connect button on the upper left corner. Once the two are connected you will see the

time ticking on the bottom right corner of the main PC200W window.

8. Clock Synchronization: This is crucial to ensure that all climate data are properly time

stamped. IF YOU FORGET THIS STEP THE DATA WILL HAVE NO VALUE! To

perform the clock synchronization hit the Set Clock button in the clocks area in the main

window of PC200W (see Figure 8 on page 20). MAKE SURE THAT THE CORRECT

LOCAL DATE AND TIME are shown in the Data Logger Field. In locations with

Daylight Savings Time (DST) ensure that the standard time is shown (not the DST time).

Figure 8: Main PC200W window with set clock button highlighted.

3.3 Upload the data collection program

We have created a standardized data collection program that tells the data logger which sensors

are connected where, how often the data is collected, and how it is reported. The program

expects a maximum of five sensors: two temperature/RH sensors, two solar radiation sensors,

and one precipitation sensor. Table 4 shows how different variables from each sensor are

reported as well as for the voltage of the battery and the tachometer reading from the radiation

shield.

Variable (units) Collected every Reported every What is reported

Temperature (

5 sec 5 min Average, Standard Deviation

Relative Humidity (%) 5 min 5 min Value at the end of sampling

interval

Rainfall (mm) Continuously 5 min Total

Average Incident

Radiation (W/m

)

5 sec 5 min Average, Standard Deviation

Total Radiation (MJ/m

) 5 sec 5 min Total

1 2 ... 15 16 17 18 19 20 21 22 23 24 25 ... 94 95

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Campbell CM10K Spezifikationen Seite 20