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Difference between revisions of "Barometric pressure"

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{{MitoPedia
{{MitoPedia
|abbr=''p''<sub>b</sub>
|abbr=''p''<sub>b</sub>
|description=Barometric pressure, ''p''<sub>b</sub>, is an important variable to be measured for calibrating oxygen sensors in solutions that are equilibrated with air. The atm-standard pressure (1 atm = 760 mmHg = 101.325 kPa) has been replaced by the standard pressure of 100 kPa. The partial pressure of oxygen, ''p''<sub>O2</sub>, in air is a function of barometric pressure, which changes with altitude and locally with weather conditions. The partial oxygen pressure declines by 12% to 14% per 1,000 m up to 6,000 m, and by 15% to 17% per 1,000 m between 6,000 and 9,000 m. The [[O2k-Barometric Pressure Transducer]] is built into the OROBOROS Oxygraph-2k as a basis for accurate air calibrations in high-resolution respirometry. For highest-level accuracy of calculation of oxygen pressure, it is recommended to compare at regular intervals the barometric pressure recording provided by the O2k with a calibrated barometric pressure recording at an identical time point and identical alitude.
|description=Barometric pressure, ''p''<sub>b</sub>, is an important variable to be measured for calibrating oxygen sensors in solutions that are equilibrated with air. The atm-standard pressure (1 atm = 760 mmHg = 101.325 kPa) has been replaced by the standard pressure of 100 kPa. The partial pressure of oxygen, ''p''<sub>O2</sub>, in air is a function of barometric pressure, which changes with altitude and locally with weather conditions. The partial oxygen pressure declines by 12% to 14% per 1,000 m up to 6,000 m, and by 15% to 17% per 1,000 m between 6,000 and 9,000 m. The [[O2k-Barometric Pressure Transducer]] is built into the Oroboros O2k as a basis for accurate air calibrations in high-resolution respirometry. For highest-level accuracy of calculation of oxygen pressure, it is recommended to compare at regular intervals the barometric pressure recording provided by the O2k with a calibrated barometric pressure recording at an identical time point and identical altitude.
|info=[[MiPNet06.03 POS-calibration-SOP]], [[O2k-Barometric Pressure Transducer]]
|info=[[MiPNet06.03 POS-calibration-SOP]], [[O2k-Barometric Pressure Transducer]]
}}
}}

Revision as of 09:03, 1 August 2017


high-resolution terminology - matching measurements at high-resolution


Barometric pressure

Description

Barometric pressure, pb, is an important variable to be measured for calibrating oxygen sensors in solutions that are equilibrated with air. The atm-standard pressure (1 atm = 760 mmHg = 101.325 kPa) has been replaced by the standard pressure of 100 kPa. The partial pressure of oxygen, pO2, in air is a function of barometric pressure, which changes with altitude and locally with weather conditions. The partial oxygen pressure declines by 12% to 14% per 1,000 m up to 6,000 m, and by 15% to 17% per 1,000 m between 6,000 and 9,000 m. The O2k-Barometric Pressure Transducer is built into the Oroboros O2k as a basis for accurate air calibrations in high-resolution respirometry. For highest-level accuracy of calculation of oxygen pressure, it is recommended to compare at regular intervals the barometric pressure recording provided by the O2k with a calibrated barometric pressure recording at an identical time point and identical altitude.

Abbreviation: pb

Reference: MiPNet06.03 POS-calibration-SOP, O2k-Barometric Pressure Transducer



MitoPedia methods: Respirometry 


MitoPedia O2k and high-resolution respirometry: O2k hardware, DatLab