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David Smith

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  1. Thanks Reef. I have now selected 0.01 in in the setup as I'm sure I don't have the metric adapter. From my previous calibration this should be reasonably close. But I can't remember what setup I selected 10 yrs ago, on the original setup. If the rainfall setup is on 0.2mm bucket and it is actually calibrated for 0.01 in, that will result in 25% under estimating of the actual rainfall.
  2. Thanks for the responses, much appreciated. I have solved the first problem, during the summer I had to put the standard settings back in. On mine for the rain bucket, it has three calibrations ie 0.01inch, 0.1mm and 0.2mm. I had selected 0.1mm in error. I not convinced I have the metric measurement adapter, if this is the case then it will be measuring in 0.01 inch increments ie 0.254mm. Which will make it closer to the correct value in my calibration exercise.
  3. Davis Vantage Pro - model of 10 yr vintage. I have recently recently replaced the reed switch, before I never had any concern about the rain fall measurements, since I felt it did not record the rain fully. My tests reveal that for every swing the recorder is measuring 0.1mm, I thought this should be 0.2mm. The model is a UK version. I put 0.2litres slowly into the vessel, the rainfall came as 2.7mm (and I counted 27 movements). This should be around 9mm of rain. Firstly any idea why it is only counting every movement as 0.1mm and not 0.2mm (I can only assume it has always done this).
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