3051CD Differential Pressure Flow Transmitter – High Accuracy DP Measurement for Liquid, Gas, and Steam Applications
The Rosemount 3051CD Differential Pressure Flow Transmitter is a high-performance instrument designed for accurate and reliable measurement of differential pressure in flow, level, and pressure applications. Featuring a coplanar platform, it integrates seamlessly with primary flow elements such as orifice plates, venturi tubes, and pitot tubes to deliver precise flow calculations. With industry-leading accuracy, long-term stability, and a wide turndown ratio, the 3051CD ensures dependable performance in demanding process environments. Its robust construction, advanced diagnostics, and compatibility with multiple communication protocols make it a trusted choice for industries such as oil and gas, power, chemicals, and water treatment.
| Parameter |
3051CD |
3051SMV |
2051CD |
| Measurement Type |
Differential Pressure (ΔP) |
Multivariable (ΔP + Static Pressure + Temperature) |
Differential Pressure (ΔP) |
| Accuracy |
±0.075% of span (high-performance option available) |
±0.04% (DP), ±0.10% (Static Pressure), ±0.25 °C (Temperature) |
±0.10% of span |
| Rangeability (Turndown) |
Up to 100:1 |
Up to 14:1 (DP), 100:1 (Pressure) |
Up to 50:1 |
| Special Features |
Coplanar design, robust diagnostics, multiple communication protocols |
Direct mass flow output with real-time temperature & pressure compensation |
Compact, cost-effective, reliable performance |
| Communication |
HART, FOUNDATION Fieldbus, Profibus PA |
HART, FOUNDATION Fieldbus, Profibus PA |
HART |
| Stability |
5-year installed stability |
5-year installed stability |
2-year stability |
| Applications |
Flow (with primary element), level, pressure monitoring in oil & gas, chemical, power, water treatment |
High-accuracy steam, gas, and liquid flow measurement with compensation |
General-purpose flow and level measurement in cost-sensitive applications |
Applications
- Flow Measurement
- Works with primary elements such as orifice plates, venturi tubes, and pitot tubes to measure the flow of liquids, gases, and steam.
- Suitable for custody transfer, energy balance, and process optimization.
- Level Measurement
- Measures liquid level in pressurized or vented tanks by detecting the differential pressure between the top and bottom of the vessel.
- Common in the chemical, petrochemical, and water treatment industries.
- Pressure Monitoring
- Provides accurate differential pressure readings for filtration systems, pump performance monitoring, and pipeline integrity checks.
- Steam and Energy Applications
- When combined with temperature and static pressure inputs, it supports compensated steam flow measurement for power generation and heating systems.
- Industrial Process Control
- Widely used in oil & gas, power, chemical, pulp & paper, and water industries for reliable process monitoring and control.
Frequently Asked Questions (FAQ)
Q1. What is the Rosemount 3051CD used for?
The 3051CD is a differential pressure transmitter designed for accurate measurement of flow, level, and pressure. When paired with a primary element such as an orifice plate or venturi tube, it provides reliable flow measurement for liquids, gases, and steam.
Q2. Can the 3051CD directly measure flow?
No. The 3051CD measures differential pressure (ΔP). Flow is calculated using the square-root relationship between ΔP and flow rate. For direct compensated mass flow output, the Rosemount 3051SMV multivariable transmitter is recommended.
Q3. What is the accuracy of the 3051CD?
The transmitter offers up to ±0.075% of span accuracy, with a turndown ratio of up to 100:1, ensuring precise performance across a wide range of applications.
Q4. What communication protocols are available?
The 3051CD supports HART®, FOUNDATION™ Fieldbus, and Profibus PA, making it compatible with most modern control systems.
Q5. What industries commonly use the 3051CD?
It is widely applied in oil & gas, chemical, power generation, pulp & paper, and water treatment industries for flow, level, and pressure monitoring.
Q6. How long is the stability period?
The 3051CD provides 5-year installed stability, reducing the need for frequent recalibration and lowering maintenance costs.
Q7. What mounting options are available?
The transmitter features a coplanar design, allowing direct integration with manifolds and primary flow elements for flexible installation.
Q8. What materials are available for wetted parts?
Standard options include 316L stainless steel and Hastelloy®, with other alloys available for corrosive service conditions.
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