The P4100 from Kavlico Corp., Moorpark, CA, is a board-mount pressure sensor with quick-hose disconnect, designed to measure dry air or inert gases in vehicle air applications such as braking and active suspension. Pressure ranges are 0–15 psi to 0–300 psi, gauge or absolute. The piezoresistive sensor operates on a 5 VDC power supply and provides a linear amplified 0.5–4.5 VDC output proportional to pressure. You can specify a variety of quick-disconnect port sizes, including 5/32 in., 3/16 in., and 1/4 in.
Air Pressure Sensor from Kavlico