Kipp&Zonen 2AP Sun Tracker - Manual (Page 46)

INSTALLATION AND SETUP
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4.5.6 Attaching Instruments to the 2AP
This section describes how to attach Kipp & Zonen radiometers for diffuse and direct solar
measurements. Section 4.5.6.3 provides additional information on the installation of other than
Kipp & Zonen instruments.
The 2AP is specially designed for direct and diffuse sunlight measurement applications. The
Shading Assembly provides mounting for three shaded pyranometers (diffuse radiation). Two Large
Side Mounting Plates provide mounting for 4 pyrheliometers, or 3 pyrheliometers and 1 Sun Sensor.
4.5.6.1
Attaching Kipp & Zonen Radiometers to the Large Side Mounting Plates
Figure 4.31 shows how to install Kipp & Zonen Pyrheliometers on the Large Side Mounting Plates.
See the Kipp & Zonen CH 1 Pyrheliometer and the datalogger installation manuals for more
information.
Figure 4.31: Pyrheliometer Installation Diagram.
Important:
Mount the Pyrheliometer in the clamps far away enough from the Rear Mounting
Plate, such that the rear visor plate cannot hit the plate.
4.5.6.2
Attaching Kipp & Zonen Radiometers to the Rear Mounting Plate
A 2AP with Pointing & Shading Ball Assembly provides the ability to measure diffuse light irradiance
with up to three pyranometers/pyrgeometers. The 2AP Pointing and Shading Assembly is designed
for Kipp & Zonen radiometers fitted with the CV2 Ventilation System. Adapters for raising the
radiometers must be used to fill in the space when CV2 ventilation units are not used.
Figure 4.32 shows an example of how to install a Kipp & Zonen Pyranometer with CV 2 Ventilation
Unit on the Rear Mounting Plate. Figure 4.33 shows how to install a Kipp & Zonen Pyranometer
with adapter on the Rear Mounting Plate. Ensure that the radiometers are securely retained on the
Rear Mounting Plate. At a later stage, after verification of levelling of the 2AP, fine-tuning of the
radiometers will be required. See the Kipp & Zonen Pyranometer/Pyrgeometer instruction manual
for more information.