Product description: Air pressure sensor - barometer - 30-125 kPa - BMP581 - Qwiic - SparkFun SEN-20170
The SparkFun module with the Bosch Sensortec BMP581 sensor enables the measurement of atmospheric pressure in the range from 30 hPa to 125 kPa with an accuracy of ± 0.5 hPa andtemperature in the range from -40 ° C to 85 ° C. The sensor uses the I2C and SPI bus, has Qwiic connectors for rapid prototyping and solder pads as an alternative connection. It is characterized by a very high measurement resolution , reaching up to 1/64 Pa. It features a configurable oversampling setting, a FIFO buffer to hold up to 32 pressure samples, programmable low-pass filtering, and up to 6 bytes of user programmable non-volatile memory. The module is also equipped with an additional protection of the system against moisture (it is not fully waterproof, but can be used near water).
Air pressure sensor - barometer - 30-125 kPa - BMP581 - Qwiic - SparkFun SEN-20170.
Air pressure sensor equipped with the BMP581 system by Bosch Sensortec.
What does the barometer measure? What is atmospheric pressure?
The barometer is commonly referred to as the pressure sensor and is used to measure the total air pressure. Atmospheric pressure depends on weather conditions and varies with altitude. Are you wondering what atmospheric pressure is good for a human being? The value of such atmospheric pressure, the so-called normal pressure is 1013.25 hPa and decreases with increasing altitude. Pressure above this value is considered too high and dangerous to humans.
Technical specification of the sensor
- Type: barometer, air pressure and temperature sensor, barometric sensor
- Built-in chip: BMP581
- Pressure measurement range: from 30 hPa to 125 kPa
- Accuracy: ± 0.5 hPa
- Data resolution: 1/64 Pa
- Temperature measurement range: -40 ° C to + 85 ° C
- Supply voltage range: 1.71 V to 3.6 V
- Power consumption:
- 260 µA - maximum consumption during measurements
- 1.3 µA / 1 Hz - consumption in low consumption mode
- 0.55 µA - sleep mode / idle mode
- Communication interface: I2C, SPI
- I2C interface address
- 0x47 - default
- 0x46 - alternate
- I2C data transfer speed: 1 MHz
- SPI data transfer speed: 12MHz
- Output data baud rate:
- 0.125 Hz to 240 Hz (normal mode)
- 622 Hz (continuous mode, 1x oversampling)
- 6 bytes of non-volatile memory
- Built-in FIFO buffer for storing up to 32 measurements
- Built-in low-pass filter
- Conclusions:
- 2x Qwiic connector
- solder pads
- Tile sizes: 22.86 x 25.4 mm
Air pressure sensor - barometer.
