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CMP3-L Pyranometer

5.4 Example Programs

The following programs measure the CMP3-L every 10 seconds and convert

the mV output to Wm

-2

and MJm

-2

. A sensor calibration of 15.02 µV per Wm

is used for the example programs. Both programs output an hourly average

flux (Wm

-2

), and a daily total flux density (MJ m

-2

Wiring for the examples is given in Table 5-2.

TABLE 5-2. Wiring for Example Programs

Color Description CR1000 CR10X

White Signal (+) DIFF Analog High DIFF Analog High

Black Signal (-) *DIFF Analog Low *DIFF Analog Low

Shield Shield

* Jumper to AG or

with user supplied wire.

5.4.1 CR1000 Example Program

'CR1000

'Declare Variables and Units

Public Solar_Wm2

Public Solar_MJ

Units Solar_Wm2=W/m²

Units Solar_MJ=MJ/m²

'Hourly Data Table

DataTable(Table1,True,-1)

DataInterval(0,60,Min,10)

Average(1,Solar_Wm2,FP2,False)

EndTable

'Daily Data Table

DataTable(Table2,True,-1)

DataInterval(0,1440,Min,10)

Totalize(1,Solar_MJ,IEEE4,False)

EndTable

'Main Program

BeginProg

Scan(10,Sec,1,0)

'CMP3-L Pyranometer measurement in Wm

-2

'The Multiplier (m) for this example is based upon a sensor calibration (c) of

'15.02 µV/Wm

-2

, and will be different for each sensor.

'Multiplier (m) = 1000/c = 66.577896.

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