Campbell Scientific RDP500 Remote Data Platform - Manual (Page 15)

RDP500 Remote Data Platform
For optimal operation, the arms of the parallelograms should be horizontal
and parallel to the base of the rain gauge. If the front end is too high,
lower the shipping bolt and unscrew the adjusting nut on the top hook. If
the front end is too low, then tighten the adjusting nut on the top hook.
11. Orient the U-bolt bracket so that it is perpendicular to the upper hook, the
eye bolt is perpendicular to the lower hook, and the load cell is parallel to
the arms of the parallelogram.
12. Check to see if the eyebolt is centered on the lower hook.
13. Strain relief the load cell cable with cable ties so that it comes straight and
horizontally from the load cell without applying any forces on it.
14. Power up the datalogger and look at the load cell readings on the CD295
data display while slightly pushing down on the front member of the
parallelogram. The reading “Precip_in” should increase when applying
vertical force and come back to its original value once the force is
removed.
3.3 Solar Panel and Grounding Wire Installation Instructions
The RDP500 includes a 10-watt solar panel, 15’ cable, and mounting hardware.
The user must supply a mounting pole (for attaching the solar panel)
compatible with U-bolts that have a 2.125" inside leg length and a 2.5"
centerline width.
The RDP500 is also outfitted with a grounding lug located on the outside of the
internal enclosure. The user must establish a good earth ground and route it to
the grounding lug to ensure proper operation.
1. Thread the brass hex-reducing bushing into the threaded port recessed in
the rain gauge base.
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