KP23x Analog Barometric Air Pressure (BAP) Sensor Infineon KP23x Analog Barometric Air Pressure (BAP) Sensor delivers the same performance as the location and altitude change. As a result of different locations, the composition and the quality of the air around changes. Because of these changes, it is important that the engine reacts immediately. Infineon offers various KP23x pressure sensors for barometric measurement with different interfaces (analog and digital) and various pressure ranges.