Description:The 2051CG3A02A1AH2B2M5D4 is a Rosemount 2051CG Series Coplanar™differential pressure (DP) and flow transmitter, not a standalone communication card. It integrates a HART-enabled electronic module that provides both a 4–20 mA analog signal and digital communication over the same loop. Designed for precise measurement of pressure, level, and flow in harsh industrial environments, it features a coplanar flange design that eliminates the need for external mounting brackets, simplifying installation and reducing potential leak points. The integrated communication module allows for remote configuration, calibration, and diagnostics using HART handhelds or asset management systems.Application Scenarios:In a chemical processing plant in Shanxi, a 2051CG3A02A1AH2B2M5D4 was installed to monitor the flow of corrosive feedstock through a pipeline using an orifice plate. The transmitter’s Hastelloy C-276 diaphragm and Viton seals resisted the aggressive media, while its HART communication allowed engineers to remotely monitor the differential pressure and re-range the device during process changes without shutting down the line. When a zero drift was detected, technicians used a HART communicator (e.g., Emerson 475) to perform a trim calibration on-site, restoring accuracy in minutes without opening the process connection.
Parameter:
| Parameter | Specification |
|---|---|
| Product Model | 2051CG3A02A1AH2B2M5D4 |
| Manufacturer | Rosemount (Emerson) |
| Product Type | Coplanar Differential Pressure/Flow Transmitter |
| Pressure Type | Gauge Pressure (CG) |
| Output Signal | 4–20 mA DC with HART Protocol (Revision 5 or 7) |
| Reference Accuracy | ±0.075% of Span (typical for 2051CG series) |
| Measurement Range | Code A02 (Specific range, e.g., 0–6.2 kPa to 0–37.3 kPa) |
| Process Connection | Coplanar Flange, 1/4-18 NPT (Code 2) |
| Diaphragm Material | Hastelloy C-276 (Code M5) |
| Filling Fluid | Silicone Oil (Code D4) |
| O-Ring Material | Viton (Code D) |
| Electrical Connection | 1/2-14 NPT Conduit (Code AH) |
| Local Display | None (Blind, Code B) |
| Power Supply | 10.5 – 55 V DC (Loop Powered) |
| Operating Temperature | -40°C to 85°C (-40°F to 185°F) |
| Communication Protocol | HART (FSK over 4-20 mA) |
Technical Principles and Innovative Values:
- Innovation Point 1: Coplanar Flange Design. Unlike traditional DP transmitters that require separate mounting brackets and impulse piping, the 2051CG series features an integrated coplanar flange. This design reduces installation time, minimizes potential leak paths, and provides a more compact footprint, which is critical in space-constrained plant environments.
- Innovation Point 2: Integrated HART Module. The transmitter’s electronics incorporate a HART modem that superimposes a digital signal on the standard 4–20 mA analog current. This allows for bidirectional communication for device configuration, diagnostics (e.g., sensor health, plugged impulse line detection), and multivariable data transmission without requiring additional wiring or separate communication cards.
- Innovation Point 3: High Overpressure Protection. The sensor design, combined with the robust Hastelloy diaphragm and silicone oil fill, provides excellent overpressure capability and long-term stability, even when subjected to pressure spikes common in industrial processes.
