The Rosemount 3051GP Direct Mount Pressure Transmitter represents Emerson Process Management’s industry-leading solution for accurate and reliable pressure measurement in demanding industrial applications. This comprehensive technical overview covers model specifications, performance characteristics, and application guidelines for the 3051GP3A2B21AB4l5M5 configuration.
Model Code Breakdown: 3051GP3A2B21AB4l5M5
| Code Position | Value | Description |
|---|---|---|
| Base Model | 3051GP | Direct Mount Gage Pressure Transmitter |
| Range | 3 | 0 to 300 psi (0 to 20.7 bar / 0 to 2068 kPa) |
| Output | A | 4-20 mA with Digital HART Protocol |
| Process Connection | 2B | 1/2-14 NPT Female |
| Isolating Diaphragm | 21 | 316L Stainless Steel |
| Fill Fluid | AB | Silicone Oil |
| Housing | 4 | Aluminum, Polyurethane-Covered |
| Conduit Entry | l5 | 1/2-14 NPT, Aluminum |
| Display | M5 | LCD Display with Local Operator Interface |
Technical Specifications
Performance Characteristics
- Accuracy: ±0.065% of span (Standard), ±0.04% of span (High Performance option)
- Stability: ±0.1% of URL for 5 years
- Response Time: 100 ms (typical)
- Update Rate: 22 times per second
- Turn Down Ratio: Up to 100:1
Environmental Specifications
- Ambient Temperature: -40°C to 85°C (-40°F to 185°F)
- Process Temperature: -40°C to 121°C (-40°F to 250°F) direct mount
- Storage Temperature: -46°C to 85°C (-50°F to 185°F)
- Humidity: 0-100% relative humidity
- Vibration: Tested to IEC 60770-1 field requirements
Electrical Specifications
- Power Supply: 10.5-42.4 VDC (non-IS), 10.5-30 VDC (IS)
- Load Limitations: 0-1440 ohms (HART communication requires minimum 250 ohms)
- Communication Protocol: HART Revision 5, 6, or 7 selectable
- Output Signal: 4-20 mA DC, user-configurable for linear or square root
Certifications & Approvals
| Certification Type | Standards |
|---|---|
| Hazardous Area | ATEX, IECEx, FM, CSA, NEPSI |
| Safety Integrity | SIL 2/3 certified per IEC 61508 |
| Marine | ABS, DNV GL, Lloyd’s Register |
| Drinking Water | NSF/ANSI/CAN 61, ACS, KTW |
| Hygiene | 3-A, EHEDG |
Key Features & Technologies
Coplanar™ Platform Design
The Rosemount 3051GP utilizes Emerson’s patented Coplanar platform, enabling direct mounting to process connections while maintaining superior performance characteristics. This design eliminates the need for impulse piping in many applications, reducing installation complexity and potential leak points.
SuperModule™ Platform
The SuperModule design provides:
- Plugged impulse line detection
- Statistical process monitoring
- Power advisory diagnostics
- Variable logging capabilities
Advanced Diagnostics
- Loop integrity monitoring
- Process alert detection
- Device health monitoring
- Predictive maintenance capabilities
Typical Applications
Oil & Gas Industry
- Wellhead pressure monitoring
- Separator pressure control
- Pipeline pressure management
- Compressor station monitoring
Chemical & Petrochemical
- Reactor pressure measurement
- Distillation column control
- Storage tank pressure monitoring
- Process vessel pressure indication
Power Generation
- Boiler drum pressure
- Steam system monitoring
- Condenser pressure measurement
- Turbine control systems
Water & Wastewater
- Pump discharge pressure
- Filter differential pressure
- Membrane system monitoring
- Tank level (hydrostatic) measurement
Installation Guidelines
Mounting Considerations
- Direct mount configuration eliminates need for mounting brackets in most applications
- Ensure process connection is properly torqued per Emerson specifications
- Consider thermal expansion when mounting in high-temperature applications
- Maintain minimum bend radius for electrical conduit
Electrical Installation
- Use shielded twisted pair cable for HART communication
- Maintain proper grounding per local electrical codes
- Install surge protection in areas with high lightning activity
- Verify loop resistance meets HART communication requirements
Why Choose Genuine Rosemount 3051GP?
| Feature | Benefit |
|---|---|
| Emerson Factory Calibration | Guaranteed accuracy and traceability |
| Global Support Network | Local technical assistance worldwide |
| 5-Year Stability Warranty | Reduced calibration frequency, lower maintenance costs |
| SIL 2/3 Certification | Compliance with safety instrumented systems requirements |
| PlantWeb™ Digital Architecture | Seamless integration with asset management systems |
Ordering Information
The Rosemount 3051GP pressure transmitter is available in multiple configurations to meet specific application requirements. The model code structure allows precise specification of:
- Pressure range and sensor materials
- Output protocol and communication options
- Process connections and wetted materials
- Housing and electrical configurations
- Display and interface options
- Certifications for hazardous area classifications
