BMP388 Value issue

[mgchoi]

Hi, BOSCH

The BMP388 sensor is used to detect gas leaks.

Pressure: 2.5 to 2.8 kPa
Flow rate: 50 ml (cc/mim)

This product is set to this condition and detects the sensor and guides the voice to the gas leak.

*Problems
When the pressure is measured under the above conditions, an inconsistent value is output.
Inputs are constantly changing with each measurement.

-> bmp388.txt : Source of sensor settings and programs.

-> BMP388 board.jpg : This is a picture of the sensor board.bmp388 board.jpg

-> bmp388 circuit diagram.PNG

bmp388 circuit diagram.PNG

Please help me why this value is coming out.

Thanks

[BSTRobin · Accepted solution]

Hi mgchoi,

BMP388 range is 900~1100 hPa. Your test range is "Pressure: 2.5 to 2.8 kPa". BMP388's range didn't match the range you want to measure.

[mgchoi]

Thansks, BSTRobin

I missed the most basic part Thank you.