BME280 atmospheric pressure sensor
Experimental atmospheric pressure measurement with a simple sensor: BOSCH BME280The instrument is in the data collection box of the CR10X, the temperature and humidity do not reflect the real air conditions, because the box is in the sun and is not properly ventilated for these measurements.
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Parameters of pressure sensor
- Operating temperature range : -40...+85 C (operational)
0...+65 C (full accuracy)
- Operating pressure range : 300...1100 hPa
- Offset temperature coefficient : +/-1.5 Pa/K, +/-12.6 cm/K
(+25...+65 C, 900 hPa)
- Absolute accuracy : +/-1.0 ... +/-1.7 hPa
- Relative accuracy : +/-0.12 hPa
(700...900 hPa, +25...+40 C, VDD=3.3V)
- Resolution : 0.18 Pa (highest oversampling)
- RMS Noise : 0.2 Pa, 1.7 cm (reduced bandwidth)
1.3 Pa, 11 cm (full bandwidth)
- Solder drift : -0.5...+2.0 hPa
- Long term stability : +/-1.0 hPa per year
Absolute accuracy pressure
300 ... 1100 hPa, -20 ... 0 C : +/-1.7 hPa
300 ... 1100 hPa, 0 ... +65 C : +/-1.0 hPa
1100 ... 1250 hPa, +25 ... +40 C : +/-1.5 hPa


