Impact of water grain and % oxygen

Signman · 09-08-2022, 09:15 AM

In may be over simplifying but both indicate the same thing: The amount of oxygen available in a defined volume of air.

In the 2000s O2 was seen as a good indicator but sensors required re calibrating regularly. Previously Density Altitude calculation was the ticket particularly when O2 sensor reading was included.
Many were for years looking at vapor pressure, humidity & temp to indicate available O2. In the last 10 years grains of water has become the indicator of favor since I believe does the VP/H/T calculation for you.
Am sure with some time will find one is more reliable than the other these days grains is favored.

09-08-2022, 09:15 AM	#3
Signman Senior Member Join Date: Oct 2003 Location: Lower Slower Delaware Posts: 535 Likes: 22 Liked 269 Times in 99 Posts	Re: Impact of water grain and % oxygen In may be over simplifying but both indicate the same thing: The amount of oxygen available in a defined volume of air. In the 2000s O2 was seen as a good indicator but sensors required re calibrating regularly. Previously Density Altitude calculation was the ticket particularly when O2 sensor reading was included. Many were for years looking at vapor pressure, humidity & temp to indicate available O2. In the last 10 years grains of water has become the indicator of favor since I believe does the VP/H/T calculation for you. Am sure with some time will find one is more reliable than the other these days grains is favored. __________________ Frank Ferrucci I/SA 1271 "Be Thankful for the Gifts You are Given"