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Vaisala DRD11A rain detector


PaulHeinrich Sep 29, 2011 10:47 PM

Has anyone tried interfacing a Vaisala DRD11A Precipitation detector with a Campbell CR-1000 datalogger? If so, can you share any information on wiring and code?

cheers, Paul


Dizbert Oct 30, 2011 02:30 AM

I have never used one but their brochure can be found at:

http://www.vaisala.com/Vaisala%20Documents/Brochures%20and%20Datasheets/Vaisala%20DRD11A%20Rain%20Detector%20Brochure.pdf

From the information in the brochure it appears the sensor can be measure in three ways:

-set up as a simple on/off (rain/no rain) using the open collector wired to a control port.

-with a SE or Diff voltage measurement of the 1 to 3 volt (wet to dry) analog output.

or

-with a frequency pulse input set to Hz output (1600 to 6000 Hz).

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