Rosemount 3051CG3A22A1AB4M5 Gage Pressure Transmitter with LCD Display and Attached Manifold

The Rosemount 3051C is a high-performance coplanar pressure transmitter designed for accurate gage pressure measurement in demanding industrial environments. This specific model, 3051CG3A22A1AB4M5, features a measurement range of -1000 to 1000 inH2O (-2.49 to 2.49 bar) with an accuracy of ±0.075% of span, making it ideal for applications in oil and gas, chemical processing, pharmaceuticals, and water treatment where precise control is essential. It supports 4-20 mA output with HART protocol for seamless integration into digital control systems, enabling advanced diagnostics and configuration. Constructed with 316L stainless steel isolating diaphragm and process connections for corrosion resistance, it includes an integral LCD display (M5) for local monitoring and a stainless steel coplanar mounting bracket (B4) for flexible installation on 2-inch pipes or panels. The unit comes with an attached 3-valve manifold (visible in images, likely Rosemount 0305 series) for isolation, venting, and equalization, enhancing safety and ease of maintenance. Benefits include exceptional reliability, long-term stability, and reduced downtime due to self-diagnostics; drawbacks may include a higher upfront cost compared to basic transmitters and the need for periodic calibration in harsh conditions. The device appears used based on image analysis, showing minor surface wear and handwritten markings (e.g., '4.2'), but no major damage; faceplate confirms model, serial (partially visible as 'WP...'), and ratings. No additional child assets beyond the manifold. Advantages over competitors like Yokogawa or Honeywell include superior accuracy and Emerson's extensive support ecosystem.