Campbell Scientific CMP6-L, CMP11-L, and CMP21-L Pyranometers - Manual (Page 37)

Appendix A. CVF3 Heater/Ventilator
4. Loosely mount the pyranometer on the 27084 mounting stand. Do not
fully tighten the two mounting screws.
5. Turn the CVF3’s leveling screws bringing the bubble of the pyranometer’s
level within the ring (see FIGURE A-3).
FIGURE A-3. CVF3 installed onsite
6. Tighten the mounting screws to secure the assembly in its final position.
Check that the pyranometer is still correctly leveled and adjust as
necessary.
7. Use the cover’s screws to fasten the white cover to the pyranometer (see
FIGURE A-4).
A-3