measuring rain and hail in vaisala WXT520

[mwall]

On 03 Nov 2019, at 16:49, Nafpaktos Live <nafpaktia> wrote:

Hello Matthew!
The station and the driver WXT5xx works perfectly, it is working without a problem except that it doesn't measure hail total correctly. 
It is possible the direct reading day hail from the WXT520??
When I ask the precipitation of the station with polling mode in results you can see the hail count as Hc=0.0 hits/cm^2.


On Sat, Jan 6, 2018, 22:54 Matthew Wall <mwall> wrote:
rain and hail should work properly now

might be issues with hail units - hail was never really handled uniformly in wview, and some hardware might use units different from others

if you watch real-time LOOP and REC, the rain_total and rain may be in different units.  this is due to inconsistency of the wview schema that weewx inherited.  we'll fix it in a later weewx release that uses a new schema and (before that) a more extensible units architecture.

but rain_total is not used by the reporting, so everything should work properly

the syslog exception was due to random null characters coming from the serial device

i made the driver safeguard against those, so if they happen they will be ignored

i have logged out and disconnected from the weather station, so it is all yours again

let me know how it goes

m

[mwall]

On Monday, December 2, 2019 at 7:43:42 AM UTC-5, mwall wrote:

On 03 Nov 2019, at 16:49, Nafpaktos Live <nafpaktia> wrote:

Hello Matthew!
The station and the driver WXT5xx works perfectly, it is working without a problem except that it doesn't measure hail total correctly. 
It is possible the direct reading day hail from the WXT520??
When I ask the precipitation of the station with polling mode in results you can see the hail count as Hc=0.0 hits/cm^2.

i'm sorry, but i do not understand what you mean, and i do not have a vaisala on which to test.

the wxt520 reports 'rain' as a length (mm or in), and as a cumulative value.  so the driver converts that to 'rain_total' and calculates a delta 'rain' for the loop packets and archive records.

the wxt520 reports 'hail' as an area (hits per cm^2 or hits per in^2), as a delta value.  so the driver simply uses that for the loop packets and archive records.

if you want a cumulative value for hail, you can do that using tools in the weewx reporting system, or by querying the database.

or do you mean something else?

m