Topic: WS-2000 Calibration(console)

[DWIGHT123]

Hello I just setup my WS-2000 a few weeks ago love it so far besides the few hiccups in Ambient weather servers,Wunderground registration no problems really,I was just wondering is There any Calibration on the console settings I need to deep dive into to get the most out of the the station thank you very much everyone!

[Platokidd]

https://p10.secure.hostingprod.com/@site.ambientweatherstore.com/ssl/Manuals/WS-2000.pdf

page 47,  had to calibrate the barometer on my unit.

[galfert]

https://p10.secure.hostingprod.com/@site.ambientweatherstore.com/ssl/Manuals/WS-2000.pdf

page 47,  had to calibrate the barometer on my unit.

The manual is not much help. To make matters worse the example given is impossible in the real world.

The manual states:

Thus, your absolute pressure may read 28.62 inHg (969 mb) at an altitude of 1000 feet (305 m), but the relative pressure is 30.00 inHg (1016 mb).

Why is this impossible?

• Because if your Absolute pressure really is 28.62 inHg (969 mb) and Relative pressure truly is 30.00 inHg (1016 mb) then you must be at 1316 feet (401 m) not 1000 feet (305 m). Proof...plug in the numbers and see for yourself:
  https://keisan.casio.com/exec/system/1224585971
  
• Or...because if you really are at 1000 feet (305 m) and the Relative pressure is truly 30.00 inHg (1016 mb) then your Absolute pressure has to be 28.94 inHg (980 mb) not 28.62 inHg (969 mb). Proof...plug in the numbers and see for yourself:
  https://keisan.casio.com/exec/system/1224579725
  
• Or...because if you really are at 1000 feet (305 m) and the Absolute pressure is truly 28.62 inHg (969 mb) then your Relative pressure has to be 29.68 (1005 mb) not 30.00 inHg (1016 mb). Proof...plug in the numbers and see for yourself:
  https://keisan.casio.com/exec/system/1224575267
  

Executive Summary:

• There are 3 variables for consideration: Your Elevation, Your Absolute Pressure, and Relative Pressure.
• Given any 2 of these you can calculate the remaining variable.
• Knowing this is critical in understanding the relationship of these variables and in then properly configuring your station.
• You can find all the relevant formulas with an automatic web calculator at:
  https://keisan.casio.com/menu/system/000000000480
  (different formulas depending on which variables are know and which aren't)

[Platokidd]

I need a Barometer Calibration Book for Dummies. This by far has fried my brain to the point I had to walk a way several times. Spent hours yesterday reading this forum and going through the offset / set-up process. Cross converting the metrics back and forth added more time to the process using the web tool.
Think I'm "fairly dialed in" but I'm not sure if I'm spot on. My relative pressure does come very close or spot-on to the nearest airport. 

[galfert]

You shouldn't expect to be perfectly dialed in on day one. Barometer calibration is something you fine tune over a period of days or even weeks. Helps to do it when weather is steady and fair around 29.92 inhg (1013.25 hPa). Also helps to do it when isobars of pressure run through you and your airport so that you know your pressure should be equal. You should then revisit it and fine tune again months later.

[Platokidd]

Close to my home is  a weather station from a near by township. Been comparing their readings to mine and thus far I'm  please.
http://camptonhillsweather.com/

Sorry DWIGHT123, didn't mean to high-jack your thread.

[DWIGHT123]

No worries I just went to NOAA got my the closest station and put into the configuration good to know I should do it again in a few months to insure accuracy.