WMR 200 rain gauge

[Solly]

South African farmer with an Oregon Scientific WMR200 weather station
Found it very useful and of great help in crop farming

Notice that my wireless rain gauge measurement is about 15% less than my rain gauge at the fence post
Notice last night that we had 2 mm of rain and the wireless rain gauge record 0.0 mm

Are there a trick to it and were must I start

Thanks
Solly

[stevebrtx]

Two things, first of all your are depending on a tipping bucket system which each contains .04" of rain before tipping. So, you could be literally one drop short of .04" and not tip. Next, many have added an 8" funnel to increase the sensitivity to .01" per tip with the appropriate calibration to VWS, or just divide the console reading by 4.

[sjg1976]

Are both in the same location as well.

You say one is on a fence post, is the OS Rain Gauge in a similar location, or are you suffering from rain shaddows?  So it's not actualy getting any rain.