Campbell NR01, Instruction Manual

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NR01 Four-Component Net Radiation Sensor
3
The NR01 measures the four separate components of the surface radiation
balance. Working completely passive, using thermopile sensors, the NR01
generates four small output voltages proportional to the incoming and outgoing
SW and LW fluxes; SW
in
or global solar radiation, SW
out
or reflected solar
radiation, LW
in
or infrared emitted by the sky and LW
out
or infrared emitted by
the ground surface. From these also parameter like SW albedo, sky
temperature, (ground) surface temperature and off course net radiation (net
value of all SW and LW fluxes) can be calculated.
The NR01 requires leveling; a two-axis leveling facility is incorporated in the
design. See Section 6 ,
Installation
(p. 7)
.
The NR01 is supplied with four separate instrument sensitivities. To calculate
the radiation level, the sensor output voltage, U, must be divided by the sensor
sensitivity; a constant, E, that is supplied with each individual instrument:
Φ = SW
in
= U
pyrano, up
/ E
pyrano, up
5. Specifications
FIGURE 5-1 shows some dimensions. TABLE 5-1 , TABLE 5-2 , and TABLE
5-3 provide the general, pyranometer, and pyrgeometer specifications,
respectively.
FIGURE 5-1. Dimensions of the NR01 in mm:
(1) 2-Axis Leveling Assembly, (2) Mounting Arm