The Yokogawa AAI143-S50-A4S00 is a flange-mounted absolute pressure transmitter from the DPharp EJA-E Series. It is designed for high-accuracy absolute pressure measurement in demanding industrial applications. The model features Yokogawa's single-crystal silicon resonant sensor technology and includes specific configuration options indicated by the suffix codes: S50 likely refers to a specific pressure range or flange connection, while A4S00 typically indicates Hastelloy C276 diaphragm material and additional calibration or output options.