Example 23: corr_irr - irradiance
This equation computes first a temperature corrected irradiance value in Volts:
Then applies a linear equation to convert to final units:
where
c0, c1 are calibration coefficients.
x0, x1, x2 are coefficients required to convert the raw data in Volts.
x3, x4, x5 are the temperature correction coefficients.
n0 is the index of the temperature of the sensor channel.
Tsensor is the temperature of the sensor in °C.
Irrtempcompensated is the measured irradiance in Volts and compensated in temperature.
Irrcalibrated is the measured irradiance in final calibration units.
Examples
TEXT
>> channel 3 type
<< channel 3 type = irr_01Confirm the channel type.
TEXT
>> calibration 3 datetime = 20171201000000, c0 = 0.000, c1 = 1.0000Set the core coefficients.
TEXT
>> calibration 3 datetime = 20171201000000, x0 = 9.983, x1 = 0.2003, x2 = 1.000, x3 = 0.0721, x4 = 0.1049, x5 = 21.29Set the cross-channel correction coefficients.
TEXT
>> calibration 3
<< calibration 3 type = irr_01, datetime = 20171201000000, c0 = 0.0000, c1 = 1.0000, x0 = 9.983, x1 = 0.2003, x2 = 1.000, x3 = 0.0721, x4 = 0.1049, x5 = 21.29, n0 = 7Request confirmation of all calibration coefficients.