Campbell Scientific NR01 Net Radiometer - Manual (Page 8)

NR01 Four-Component Net Radiation Sensor
The following equations assume the temperature is in Kelvin.
Add 273.15 to equations 2.1-9 and 2.1-10 for temperature in
degree Celsius. NOTE
T
surface
= (LW
out
/5.67.10 -8 ) 1/4 2.1-9
T
sky
= (LW
in
/5.67.10 -8 ) 1/4 2.1-10
2.2 NR01 Construction
FIGURE 2.2-1. The NR01 Four-Component Net Radiation Sensor
(1) SW
in
solar radiation sensor or pyranometer,
(2) LW
in
Far Infrared radiation sensor or pyrgeometer
(3) radiation shield
(4) leveling assembly for x- and y axis, block plus bolts for x-axis
adjustment
(5) leveling assembly for x- and y axis, horizontal rod
(6) connection body containing the Pt100 temperature sensor, heater,
and hole for user-supplied temperature sensor (add cable gland M8)
(7) LW
out
Far Infrared radiation sensor or pyrgeometer
(8) leveling assembly for x- and y-axis, bolts for y-axis adjustment
(9) SW
out
solar radiation sensor or pyranometer
A level is located under the radiation screens.
4