Range Report  Station Pressure default on Brunton Pro?

Lindy

Gunny Sergeant
Minuteman
Mar 26, 2003
4,006
6
Rifles Only
www.arcanamavens.com
Re: Station Pressure default on Brunton Pro?

At Kaiser Memorial right now, the BP is 29.93 corrected sea-level-equivalent pressure. The altitude there is 869 feet.

So, if the meter reads 29.93 or thereabouts, it's sea level pressure. If it reads down around 29.00, it's reading station pressure.

If the barometric pressure reading has a reference altitude, then set it to your altitude to get the sea-level-corrected pressure. Set it to zero to get the station pressure.

Brunton unfortunately does not have their manuals online on their web site, or I could probably tell you more.

 

Hellbender

Gunny Sergeant
Minuteman
Apr 23, 2008
1,561
298
Lebanon, Missouri
Re: Station Pressure default on Brunton Pro?

Lindy,
Thank you for the response. Your excellent article made me realize how little I know about this subject. I downloaded the trail version of Precision Shooters Workbench and am attempting to get my shooting data to coincide with the program.

I found this in the manual, I "think" this means default should be Station Pressure, correct?

From the Brunton Manual......


Setting Pressure relative to Sea Level

1) When the barometric pressure has been
calibrated, the current barometric pressure will
offset by the target offset value.

2) To be able to read the current barometric
pressure as a pressure referring to sea-level
although at an altitude, calibrate as follows:
Check the current altitude (for example 1000m).
Divide 1000/8 (since 1 hPa/mbar is 8m altitude).
Result 125 hPa/mbar. Set offset to +125hPa/mbar.
The reading will now refer to the pressure at sealevel.

Thanks again,
Brad

 

Lindy

Gunny Sergeant
Minuteman
Mar 26, 2003
4,006
6
Rifles Only
www.arcanamavens.com
Re: Station Pressure default on Brunton Pro?

It looks like if you have the offset set to 0 what you get will be the station pressure, which is the best thing to have for ballistic software.

Regards,
-- Lindy