[wxqc] Re: Steve - Vantage Pro barometer fix

[spamfree at pensom.org]

Hello John ,

I'm getting closer. I'm pretty confident of the algorithms at this point. I've been doing a fair amount of testing. I just uploaded a new version of everything. The VPLive program now calculates and displays running averages, etc. that are used to put together the APRS/CWOP data packet. This includes calculating the unit vector average of wind direction. It also displays what it would be sending to APRS/CWOP if the sending part were done (that is the next thing I will tackle - but I may in the interim generate the file that VWAPRS looks for to send APRS data, and then that freeware program could be used). The CWOP data VPLive generates follows the specifications described in the CWOPS manual. This is the common standard for observations that is also used by the NWS/FAA automated (ASOS) stations.

The link to the latest is here:
http://www.pensom.org/weather/vptools/vptools.html

On that page there is also a Vantage Pro Pressure Calculator that lets you play around with the pressure algorithms and see what they do. I also have a link for the Delphi source code unit that contains all the algorithms so other weather program makers can easily incorporate this into their programs if they want.

Best regards,
Steve (CW4409) 
  
======= At 2006-01-04, 12:46:23 you wrote: =======

>Steve,
>
>Have you finalized your fix for the Davis barometer incompatibility? I 
>would be interested in testing this to help it along. It would be nice to 
>have a fix for this before I add another station at nearly 3,000 feet 
>elevation. Anyone know what the status of this problem is with Davis?
>
>John Webb
>CW3212
>