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TechSpec
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Air pressure and height...
Ok, i have a hard time with the air pressure. I should do a calculation with the pressure and determine the height.
I have a pressure sensor which i use for pitot-tube sensing and i have a static sensor of the same kind to measure static reference pressure. I can determine speed with the given values of temperature and pressure differency. But i should also calculate a height where that pitot-tube sensor is. I have a pressure value from the ground level and i use that as a reference value for the height calculation. However, i did find some formulas to calculate the pressure from the given height, but not vice versa.
The basic principle would be like this:
Lets assume that I am in a certain level from a sealevel, that height is unknown but let's say its within few hundred meters.
I have the air pressure of 102kPa and i move upwards into a point where the air pressure is 101kPa, now the big question is, how much is the elevation in meters? The height from a sealevel is not important and not even known, only thing matters is how much i elevated from point A to B. Is that possible to determine with only temperature and a reference pressure and a current pressure which is altered by height? The accuracy also is not critical, let's say we don't take count the gravity changes or climate pressure changes during the measurements. Only temperature and pressure.
TechSpec
Ok, i have a hard time with the air pressure. I should do a calculation with the pressure and determine the height.
I have a pressure sensor which i use for pitot-tube sensing and i have a static sensor of the same kind to measure static reference pressure. I can determine speed with the given values of temperature and pressure differency. But i should also calculate a height where that pitot-tube sensor is. I have a pressure value from the ground level and i use that as a reference value for the height calculation. However, i did find some formulas to calculate the pressure from the given height, but not vice versa.
The basic principle would be like this:
Lets assume that I am in a certain level from a sealevel, that height is unknown but let's say its within few hundred meters.
I have the air pressure of 102kPa and i move upwards into a point where the air pressure is 101kPa, now the big question is, how much is the elevation in meters? The height from a sealevel is not important and not even known, only thing matters is how much i elevated from point A to B. Is that possible to determine with only temperature and a reference pressure and a current pressure which is altered by height? The accuracy also is not critical, let's say we don't take count the gravity changes or climate pressure changes during the measurements. Only temperature and pressure.
TechSpec
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