[Edit 11/13/2020 Please read my other post in this thread that shows virtually no large difference between the 2 WH40 units, well within the margin of error]
I know... reading the topic some may be asking, huh ? why? Please understand this is more of a fun thing than a technical thing.
It's actually simple , I have 2 WH40s. One I got from Ecowitt, because I wanted to see how it worked. Then I bought the Ambient version to have that one work with my WS-2000 console.
I decided to make a side by side comparison. Now first off, I do not believe the results of this is because one came from Ecowitt, and the other from Ambient. Although the results are curious. I made a mount to have the 2 WH40s very close, separated by my Stratus. As seen in the image below (Please critique the arrangement). What I have seen is that the 2nd WH40 always reports lower (previous events), and usually same rough % difference.
I just had another rain event and this is the data. I would expect the side by side WH40's to report almost the same data. But as I have seen in previous instances with this exact combination one reads lower. The numbers are from GW1000s with the same (1.6.3) firmware.
(1) GW1000 #1 , WH40#1 (Ecowitt) , 0.45"
(2) GW1000 #2 , WH40#2 (Ambient), 0.36" (The WS-2000 reports the same number)
(3) Stratus manual, 0.43"
I would not expect that much of a difference. (I'm not trying to compare to my WH65 that reported 0.55" for the event on another GW1000 , as it is at a different area on my property). But for those following the WH65 vs WH40 thread, well even multiple WH40s don't agree (and probably multiple WH65's). I will continue to monitor , and probably apply offsets after some number of repeated events.
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