HART is by far the largest digital communications technology deployed in the process industries with over 40 million field instruments supporting HART technology installed worldwide. HART is the global standard for sending and receiving digital information across the 4-20mA analog current loops that connect the vast majority of field instruments with distributed control systems. HART technology offers a reliable, long-term solution for plant operators who seek the benefits of intelligent devices with digital communication, while preserving existing investments in analog instrumentation and plant wiring. Much more than a communication protocol, with HART technology process plants have access to a wealth of digital process, maintenance, and diagnostic information. Information that is valuable throughout the plant lifecycle from design, to installation and configuration, through operation, and finally maintenance.
HART is simple, reliable, and easy to use.