Campbell Scientific NR-LITE-L Kipp and Zonen Net Radiometer - Manual (Page 10)

NR-LITE Net Radiometer
Mechanical
Housing material: Anodized aluminum
Cable material: Polyurethane
Weight: 200 g
Cable length: 15 m (can be extended up to 100 m)
Physical Dimensions
Sensor: 3.1” (8.0 cm) diameter
Support Arm: 0.6” (1.6 cm) diameter x 31.5” (80 cm) L
Weight: 23 oz (635 g)
Environmental
Working temperature: -30 to +70°C
Temperature dependence: 0.12%/°C
3. Installing the NR-LITE
Screw in the ~2.5” long bird repellent stick, which is typically
shipped with the calibration documentation. NOTE
Mount the sensor so that no shadow will be cast on it at any time of day from
obstructions such as trees, buildings or the mast or structure on which it is
mounted. In the northern hemisphere the instrument is normally oriented
towards the South to avoid potential problems from shading. The downward
facing sensor is representative (99%) for a circular area having a radius of ten
times the height (10h).
To avoid shading effects and to promote spatial averaging the NR-LITE should
be mounted at least 1.5 m above the ground surface. It is recommended that
the NR-LITE be mounted to a separate vertical pipe at least 25’ from any other
mounting structures. PN 26120 mounting bracket kit is used to mount the NR-
LITE directly to a vertical pipe, or to a CM202, CM204, or CM206 crossarm.
Mount the sensor as follows:
1. Attach the 26120 mounting bracket to the vertical mounting pipe, or
CM200-series crossarm using the u-bolt provided (see Figure 6).
2. Insert the sensor’s support arm into the mounting block of the mounting
bracket kit. Make sure the sensor points in the direction of the arrows that
appear after the word “SENSOR” on top of the bracket (see Figure 6).
Perform a coarse leveling of the sensor using the sensor’s bubble level.
Tighten the four screws on top of the mounting bracket to properly secure
the support arm so that it does not rotate.
Do not attempt to rotate the instrument using the sensor head or
you may damage the sensor – use the support arm only. NOTE
3. Perform the fine leveling using the two spring-loaded leveling screws—
one on the front and the other on the back of the bracket.
6