⚙️ Emerson Rosemount 2051TG / 2051TA Coplanar Pressure Transmitter \| Technical Guide, Model Codes and Price Advantage
Rosemount 2051TG and 2051TA are compact intelligent pressure transmitters using Emerson's Coplanar™ platform.
2051TG → Gauge (relative) pressure measurement
2051TA → Absolute pressure measurement
Thanks to the coplanar design, the transmitter can be easily integrated directly into manifolds and process connections.
Key advantages: ✔ Compact body design ✔ High measurement accuracy ✔ Long-term stability ✔ Low maintenance cost ✔ HART®, FOUNDATION™ Fieldbus and PROFIBUS PA support ✔ Cost advantage in EPC and OEM projects
Compared to the 3051 series, its more economical structure makes it widely used especially in OEM machines, skid systems and standard process applications.
| Parameter | Description |
|---|---|
| TG | Gauge Pressure Transmitter |
| TA | Absolute Pressure Transmitter |
| Measurement Range | Low, medium and high pressure ranges |
| Process Connection | NPT, ANSI, DIN Flange |
| Output | 4–20 mA HART®, FOUNDATION™ Fieldbus, PROFIBUS PA |
| Housing | Aluminum or Stainless Steel |
| Wetted Parts | 316L SS, Hastelloy, Monel, Tantalum |
| Certifications | ATEX, IECEx, FM, CSA, SIL options |
Note: Communication protocols and certification options vary depending on the ordered model.
2051TG1A02A1AB4 → Gauge Pressure → ½" NPT → 316L SS → 4–20 mA HART® → IP66
2051TA2A22A1AB4 → Absolute Pressure → 2" DIN Flange → 316L SS → 4–20 mA HART® → NEMA 4X / IP66
2051TG3A05F1AB4 → Gauge Pressure → FOUNDATION™ Fieldbus → ANSI Flange → Stainless process connection
2051TA4A2B21P1AB4 → Absolute Pressure → Hastelloy C → PROFIBUS PA → Stainless Housing
📑 Product codes must always be verified against Emerson datasheet and selected according to process conditions.
Sensor diaphragm detects process pressure.
Electronic sensor cell converts this pressure into a digital signal.
Microprocessor applies temperature compensation.
Output signal:
4–20 mA
HART®
FOUNDATION™ Fieldbus
PROFIBUS PA
Transmitted to PLC or DCS systems.
| Parameter | Feature |
|---|---|
| Measurement Type | Gauge / Absolute Pressure |
| Output | 4–20 mA |
| Communication | HART®, FOUNDATION™ Fieldbus, PROFIBUS PA |
| Process Connections | ANSI, DIN, NPT |
| Wetted Parts | 316L SS, Hastelloy |
| Housing | Aluminum / Stainless Steel |
| Protection | IP66 / NEMA 4X |
| Certifications | ATEX, IECEx, FM, CSA, SIL options |
⚡ Power Plants • Steam lines • Turbine auxiliary systems • Vacuum systems
🛢️ Petrochemical and Refineries • Gas pressure • Process lines • Tank pressure
🧪 Chemical Industry • Reactor pressure • Corrosive processes • Chemical storage
💧 Water and Wastewater • Line pressure • Pump outlets • Filtration systems
🔧 OEM and Skid Systems • Compact process equipment • Package systems • Machine manufacturers
✔ Compact coplanar design ✔ Easy manifold integration ✔ High long-term stability ✔ Low Total Cost of Ownership (TCO) ✔ Global certification compliance ✔ Fast RFQ and global sourcing support
Zero Trim
Sensor Trim
Loop Test
HART® communication verification
Process connection check
Pressure sealing test
Output verification
| Problem | Possible Cause | Solution |
|---|---|---|
| Measurement drift | Calibration | Zero Trim |
| Unstable signal | Vibration | Check process connection |
| Communication error | HART® setting | Verify configuration |
| No output | Power supply issue | Check power source |
| Feature | 2051TG | 2051TA |
|---|---|---|
| Measurement Type | Gauge Pressure | Absolute Pressure |
| Reference | Atmosphere | Vacuum |
| Usage | Line Pressure | Vacuum and Gas Systems |
| OEM Usage | Very Common | Common |
What is the main difference between 2051TG and 2051TA? 2051TG measures relative pressure referenced to atmosphere. 2051TA measures absolute pressure using internal vacuum reference.
Which communication protocols are supported? Standard: 4–20 mA HART®. Optional: FOUNDATION™ Fieldbus and PROFIBUS PA.
How long is the RFQ process? Yeşil Grup Enerji typically responds within 24–48 hours through its global sourcing network.
Yeşil Grup Enerji provides:
Model validation
Datasheet review
Technical configuration support
Cross-reference analysis
Global sourcing
Fast RFQ management
International project support
📧 [email protected] 📞 +90 505 696 61 00 🌐 www.yesilgrupenerji.com
Emerson Rosemount 2051TG and 2051TA Coplanar Pressure Transmitter models; with compact Coplanar™ design, high accuracy measurement performance and industrial communication protocols, provide reliable pressure measurement in energy, petrochemical, chemical, water & wastewater and OEM processes. Suitable for both gauge and absolute pressure applications, they stand out with wide configuration options, long service life and low Total Cost of Ownership.
Yeşil Grup Enerji supports projects with model validation, technical configuration, datasheet verification, alternative product analysis, global sourcing and fast RFQ management, helping determine the most suitable technical and commercial solution. Through its international supply network, it offers competitive quotations, flexible delivery options and reliable engineering support.