The Rosemount 2051CD offers compact design and reliable measurement performance, making it ideal for OEM machinery, skid systems, and cost-focused projects. ✔ Accurate flow measurement ✔ Reliable hydrostatic level calculations ✔ Filter and membrane monitoring ✔ Improved energy efficiency ✔ Reduced risk of unplanned downtime ✔ Optimized maintenance costs
Compared to the Rosemount 3051CD, the 2051CD has a smaller body size while still meeting essential process requirements, providing a strong price/performance balance.
Rosemount 2051CD is a smart differential pressure transmitter designed to measure pressure differences between two process points with high accuracy.
Key applications include:
Flow measurement (orifice, venturi, pitot tube)
Hydrostatic tank level measurement
Filter differential pressure monitoring
Pump performance analysis
Heat exchanger efficiency control
Membrane system monitoring
| Parameter | Description |
|---|---|
| CD | Compact Differential Pressure Transmitter |
| Measurement Range | Differential pressure capacity |
| Process Connection | ANSI, DIN, or NPT |
| Wetted Materials | 316L SS, Hastelloy |
| Output | 4–20 mA HART®, FOUNDATION™ Fieldbus, PROFIBUS PA |
| Housing | Aluminum or Stainless Steel |
Note: Communication protocols and certifications vary by configuration.
2051CD2A22A1AB4 → Medium range, 2” DIN flange, 316L SS, 4–20 mA HART, aluminum housing, IP66/NEMA 4X
2051CD1A05A1AB4 → Low range, 1” ANSI flange, 316L SS, 4–20 mA HART, aluminum housing
2051CD3A02A1AB4 → High range, ½” NPT, 316L SS, 4–20 mA HART, IP66 protection
2051CD2A2B21AB4 → Medium range, ½” NPT, Hastelloy C, 4–20 mA HART, NEMA 4X/IP66
2051CD3A22A1AB4 → High range, 2” DIN flange, 316L SS, 4–20 mA HART, aluminum housing
2051CD4A2B21AB4 → Very high range, ½” NPT, Hastelloy C, 4–20 mA HART, stainless steel housing
📑 Codes must be verified against the Rosemount 2051 datasheet and selected according to process conditions.
Differential pressure is applied to the diaphragm between two process points.
Mechanical changes are converted into an electrical signal.
The microprocessor performs temperature compensation and digital signal processing.
The measurement is transmitted via 4–20 mA HART or digital protocol.
Flow, level, or filter performance is reliably monitored.
| Parameter | Specification |
|---|---|
| Measurement Type | Differential Pressure |
| Output | 4–20 mA |
| Communication | HART®, FOUNDATION™ Fieldbus, PROFIBUS PA |
| Process Connections | ANSI, DIN, NPT |
| Wetted Materials | 316L SS, Hastelloy C |
| Housing | Aluminum / Stainless Steel |
| Protection | IP66 / NEMA 4X |
| Certifications | ATEX, IECEx, FM, CSA, SIL |
⚡ Power Plants → Steam line flow measurement, condensate systems
🛢️ Petrochemical & Refinery → Gas and liquid flow control, filter monitoring
🧪 Chemical Industry → Reactors, dosing systems, corrosive processes
💧 Water & Wastewater → Tank level, pipeline flow, filtration systems
🔧 OEM & Skid Systems → Compact process packages, compressor skids
✔ Compact body design ✔ Reliable differential pressure measurement ✔ Long-term stability ✔ HART®, Fieldbus, PROFIBUS support ✔ Global certification compliance ✔ Reduced total cost of ownership (TCO) ✔ Fast RFQ and global sourcing support
Zero Trim verification
Sensor Trim check
Loop Test
HART® communication validation
Manifold connection check
Impulse line venting
Reference pressure verification
| Problem | Possible Cause | Solution |
|---|---|---|
| Measurement drift | Calibration shift | Zero Trim / recalibration |
| Unstable reading | Air or vibration | Impulse line check |
| Noisy signal | EMC interference | Grounding check |
| Communication issue | HART® setup | Verify configuration |
| No output | Power supply fault | Loop/power check |
| Feature | 2051CD | 3051CD |
|---|---|---|
| Positioning | Compact, economical | Premium process solution |
| Housing | More compact | Advanced design |
| Typical Use | OEM, general process | Critical process applications |
| Cost | Lower | Higher |
| Flexibility | High | Very high |
What’s the difference between 2051CD and 3051CD? 2051CD is compact and cost-effective; 3051CD offers wider ranges and advanced options.
Which protocols does 2051CD support? Standard 4–20 mA HART, optional FOUNDATION Fieldbus and PROFIBUS PA.
Where is 2051CD typically used? Flow measurement, hydrostatic level, filter monitoring, pump performance analysis, and process control.
How long does the RFQ process take? Yeşil Grup Enerji typically responds within 24–48 hours through global sourcing.
Yeşil Grup Enerji provides:
Model validation
Technical configuration support
Cross-reference analysis
Datasheet verification
Spare parts planning
Global sourcing
Fast RFQ management
📞 +90 505 696 61 00
The Emerson Rosemount 2051CD differential pressure transmitter delivers compact design, cost efficiency, and reliable performance for flow, hydrostatic level, and filter monitoring applications. With Yeşil Grup Enerji’s global sourcing capability, datasheet-backed accuracy, and fast RFQ processes, your projects gain the most suitable technical and commercial solutions.
📌 Important Note:
Yeşil Grup Enerji is not an official Emerson distributor. As an independent, multi-brand industrial supplier, we leverage a global sourcing network to provide fast, competitive, and reliable solutions. This independence ensures both technical accuracy and commercial flexibility for your projects.
With Yeşil Grup Enerji’s global sourcing capability, datasheet-backed technical support, and rapid RFQ processes, you can secure the most suitable technical and commercial solution for your operations.