HART-enabled variant

The YOKOGAWA ASI533-H is the HART-enabled variant of the ASI533 analog output module with a built-in barrier, designed for the CENTUM VP distributed control system. The "-H" suffix indicates it supports HART digital communication, allowing remote monitoring and configuration of connected HART field devices (such as valve positioners) alongside the standard 4–20 mA analog output signal.

The YOKOGAWA AAI141-H is the HART-enabled variant of the AAI141 analog input module for the CENTUM VP / CS 3000 distributed control system. The "-H" suffix specifically indicates support for HART digital communication, allowing configuration and diagnostics of smart field transmitters over the 4–20 mA loop.