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Barometric Pressure Unit is a barometer unit, which integrates the Bosch BMP280 pressure sensor to measure atmospheric pressure and estimate the altitude. The relative accuracy can reach ± 0.12hpa, equivalent to ± 1m height difference. At the same time, the temperature drift coefficient is very low, which can reach 1.5 PA / K, that is, the temperature drift is 12.6 cm / K. in addition, there is an integrated temperature sensor in the chip.
| Resources | Parameter |
|---|---|
| Air pressure measurement range | 300 - 1100 hPa(+9000m ~ -500m) |
| Relative accuracy | 0.12hPa |
| Absolute accuracy | 1hPa |
| Temperature measurement range | -40 ~ +85°C |
| Temperature resolution | 0.01°C |
| Pressure resolution | 0.16Pa |
| Temperature coefficient offset | 1.5 Pa/K(12.6 cm/K) |
| Current consumption | 2.7μA @ 1 Hz sampling rate |
| Voltage | 1.71V - 3.6V |
| Communication protocol | I2C：0x76 |
| Net Weight | 8g |
| Gross Weight | 21g |
| Produce Size | 24*24*13mm |
| Package Size | 35*36*18mm |
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