Thanks Michi for your help.
Good tip for verifying the accuracy of a rain gauge. As a relatively new
weewx user (several months), I was wondering how to implement a conversion
factor in the config file.
My weather station uploads simultaneously to Ambient weather and Weather
Underground. Those are the "actual numbers" that I mentioned in my post.
Those numbers correspond to what I am seeing on my Ambient Ws-2000 display
console.
However, i must be overlooking something regarding conversion factors.
For instance in the last 3 rain events here is what I got:
Ambient Weewx conversion
Date Rain mm* Rain mm factor
2019-12-09 25.9 352.8 13.62162162
2019-12-08 1.8 10.9 6.055555556
2019-12-04 2.0 12.2 6.1
* as reported by ambientweather.net
The conversion factors are all different so if I put in a conversion factor
of 10 what would happen to the weewx reported numbers?
Thanks..Glenn
--
On Wednesday, December 11, 2019 at 3:26:32 AM UTC-5, Michi Kaa wrote:
>
> Take your and the other Measurements (which, I suppose, are measure on
> another place nearby, where the real amount of rainfall may vary to your
> place more or less) yout measurements are off with ~factor 10.
>
> so you could configure:
>
> [StdCalibrate]
>
> [[Corrections]]
>
> rain = rain / 10
>
>
> If it is really off by a certain factor, you could do so.
>
> To check that, place a bucket near the rain sensor, then compare your
> measure value to the value your sensor delivers. The amount of mm is the
> amount of water in liters divided by the area of the opening of the bucket
> in square meters. Or the amount of water in kilograms divided by the is the
> area of the opening of the bucket in m².
>
> Am Dienstag, 10. Dezember 2019 14:06:55 UTC+1 schrieb Glenn Szlagowski:
>>
>>
>> comparison of a few weeks rainfall data in Oct 2019:
>>
>> WEEWX ACTUAL
>> RAIN RAIN
>> -------
>> 1.3 0.25
>> 4.8 0.76
>> 40.6 5.84
>> 23.6 3.05
>> 52.8 5.33
>> 120.6 8.64
>> 81.5 9.14
>> 102.6 9.14
>> 254.5 14.48
>> 719.1 35.81
>> 24.4 2.54
>> 77.2 6.86
>> 55.4 4.32
>> ---
>>
>
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