Working in the NRM one only measures the Net radiation. This is done by subtracting the measured
values of the lower sensors from those of the upper sensors. Making a soldered hardware
connection of the electrical cables can do this. This is possible due to the fact that the sensor
sensitivities are matched. The proper way to connect the hardware is indicated in figure 1.1. The Pt-
100 does not have to be used because the temperature correction cancels when subtracting the
lower CG 3 measurement results from those of the upper CG 3 (assuming that the temperatures of
the opposite CG 3's are equal).
It should be realised that using the CNR 1 in this way, a large amount of information is lost, and also
the possibilities of checking the validity, as well as the quality of the measured data, can not be
utilised.