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Setup SPUV-6/10 Frequently Asked Questions

FAQ Legend:All Products
Product Class (Rotating Shadowband Radiometers)
This Product (SPUV-6/10)

2. Setup

1. We have verified the direction of geographical North-South and the motor axis is parallel with earth's polar axis. For many months the shadowband shadeed correctly. But now the shadowband tip does not shadow the diffuser entirely. Each day the gap of shadow becomes larger (headed toward the summer solstice) or smaller (headed toward the winter solstice).

This tends to happen near summer solstice and is an adjustment issue:

1. Using a protractor, cut a small (roughly 3") triangle of thin cardboard with the angle of your site latitude. Now slip the triangle under the motor case between the stand and the motor housing, to verify your motor's shaft angle is equal to your site latitude. This must be set to within about a degree, and once set, you can forget about it.

2. Check that your motor assembly is pressed all the way back against the machined slide (a both points top and bottom), If there is a small gap loosen the screw and press the motor hard against the slide and re-tighten the clamp.

3. Assuming the above two items are set correctly, the band may have been bent slightly out of round. Gently bend it down (not too much) and try that.

For further help, see our support system:


2. Can longer cables be supplied?

Yes. The standard length cable on a UVB-1, UVA-1, or TSP-700 is 10 meters, and standard cable for the TSP-400 is 3 meters. However, we can supply a longer cable as a special order. You can also splice a piece of good-quality foil shielded cable to the existing cable. The cable type that we use is manufactured by Belden, but any PVC jacket cable with foil shield and drain wire, plus nine #24 AWG stranded tinned copper conductors, will work.

Note that due to signal levels, the cable on the MFR-7 or SPUV cannot be made longer than the standard length.



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This page was last updated on Monday, September 11, 2006 .