When was the intelligent transmitter introduced? What are its features?

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In the early 1980s, the American company Honeywell was the first to introduce the ST3000 series of intelligent pressure transmitters. The features of intelligent transmitters are as follows: 1. In addition to pressure (differential pressure) sensing elements, the sensing components usually also include temperature sensing elements. 2. The product utilizes microelectromechanical systems technology, very large-scale integrated circuits, and surface mounting technology; all of its components have a compact design, offering high reliability and a small size. 3. High precision, generally at 0.1% or 0.2%, with some reaching up to 0.75%. 4. The range ratio is wide, with some reaching 30, 40, 50, 100, or even 400. 5. Both the hydrostatic performance and one-way overload performance have seen significant improvements compared to analog products. 6. Intelligent transmitters can enable remote communication using a hand-held operator. Set its zero and full scale. In other words, passive migration is possible. It is very convenient for on-site use. 7. Digital communication is possible between the intelligent transmitter and the Distributed Control System DCS.