The MLX90821 measures pressures that dip down to 50 mbars

https://www.electronics-lab.com/mlx90821-measures-pressures-dip-50-mbars/

Melexis has designed a relative pressure sensor IC that can operate in and measure very low pressures in automotive applications. The MLX90821 can detect even the smallest vapor leaks—which is a central part of EVAP systems. The device is an SoC (system on a chip) employing MEMS (Microelectromechanical system) technology, an analog signal chain, and digital […]