Rosemount 3051S Pressure Transmitter

In process automation, accurate pressure measurement is critical for maintaining safety, efficiency, and product quality. The Rosemount 3051S Pressure Transmitter, part of Emerson’s Smart Pressure family, sets a global standard for performance, reliability, and long-term stability.

This transmitter combines advanced sensing technology, smart diagnostics, and robust design, making it ideal for applications in oil and gas, power generation, chemical processing, and water treatment. Known for its exceptional precision and dependability, the Rosemount 3051S is a leading choice for engineers and plant operators seeking consistent, maintenance-free performance.

Table of Contents

What Is the Rosemount 3051S Pressure Transmitter?

The Rosemount 3051S is a high-accuracy, smart pressure transmitter designed for differential, gauge, and absolute pressure measurement. It can also be configured for flow and level applications when paired with primary elements such as orifice plates or level diaphragms.

With its modular architecture and scalable design, the 3051S offers a flexible solution for demanding industrial environments — delivering unmatched accuracy, long-term stability, and advanced diagnostic capabilities.

Working Principle of the Rosemount 3051S

The operation of the Rosemount 3051S is based on piezoresistive or capacitive sensing technology that converts applied process pressure into an electrical signal.

Here’s how it works:

The process pressure is applied to the transmitter’s sensing diaphragm.
This pressure causes minute deflections in the diaphragm.
The change in diaphragm position alters the resistance or capacitance of the sensing element.
The electronics convert this signal into a digital or analog output (4–20 mA or digital HART®).
The transmitter processes, amplifies, and transmits the data to a control system for monitoring and process control.

Because of its robust electronics and sealed reference chambers, the 3051S delivers accurate, stable readings even in fluctuating temperature, vibration, or pressure conditions.

Key Features of the Rosemount 3051S Pressure Transmitter

1. Industry-Leading Accuracy

Delivers reference accuracy up to ±0.025% of span.
Ensures consistent process control and optimized performance.

2. Advanced Diagnostics

Built-in PlantWeb™ digital architecture enables proactive maintenance.
Detects plugged impulse lines, sensor drift, and process anomalies before failures occur.

3. Modular, Scalable Design

Configurable for differential, gauge, or absolute pressure.
Available in multiple pressure ranges, materials, and communication protocols.

4. Long-Term Stability

Stability of ±0.025% of URL for up to 10 years — minimizing recalibration and downtime.

5. Smart Communication

Supports HART®, FOUNDATION Fieldbus™, and WirelessHART® communication for seamless integration with digital control systems.

6. Compact and Rugged Construction

Engineered for tough environments with vibration resistance, corrosion protection, and temperature tolerance.

7. Multi-Sensor Capability

Enables simultaneous pressure, temperature, and flow measurement for enhanced process insight.

8. Low Power Consumption

Designed for energy-efficient operation in both wired and wireless setups.

Advantages of Using the Rosemount 3051S

1. Precision and Repeatability

High measurement accuracy ensures tighter process control and better product quality.

2. Reduced Maintenance Costs

Long-term stability and smart diagnostics extend calibration intervals and minimize maintenance.

3. Enhanced Process Safety

Continuous monitoring and alert systems improve safety in critical operations.

4. Versatile Application Range

Performs accurately across gases, liquids, and steam in varied process conditions.

5. Easy Integration

Compatible with modern control systems for plug-and-play installation.

6. Durability and Reliability

Built for challenging industrial conditions, including high vibration and corrosive media.

7. Improved Efficiency

Accurate measurements help optimize process performance, energy consumption, and output quality.

Applications of the Rosemount 3051S Pressure Transmitter

The 3051S Pressure Transmitter is used in numerous industries and processes where precision and reliability are critical.

1. Oil and Gas

Monitors wellhead and pipeline pressure.
Measures differential pressure for flow applications.
Ensures accuracy under high-pressure, high-temperature environments.

2. Chemical and Petrochemical

Provides stable pressure and level measurement in reactors, distillation towers, and storage tanks.
Withstands corrosive and hazardous chemicals.

3. Power Generation

Used for boiler drum, steam, and feedwater pressure measurement.
Supports energy efficiency and process control.

4. Water and Wastewater Treatment

Monitors pump discharge pressure, filtration systems, and distribution networks.
Suitable for clean water, sludge, or aeration applications.

5. Food and Beverage

Maintains precise control in filling, packaging, and process automation systems.
Available with sanitary process connections.

6. Pulp and Paper

Ensures accurate level and pressure control in digesters and chemical recovery systems.

Technical Specifications Overview

Parameter	Specification
Measurement Type	Differential, Gauge, or Absolute Pressure
Accuracy	±0.025% of span
Stability	±0.025% of URL for 10 years
Output Signal	4–20 mA, HART, Fieldbus, WirelessHART
Pressure Range	Up to 20,000 psi (1379 bar)
Process Temperature	-40°C to +120°C (standard)
Materials	Stainless Steel, Hastelloy, or Alloy options
Mounting Styles	Coplanar, In-Line, or Remote Seal

Best Practices for Installation and Calibration

To ensure optimal performance and long service life:

Install the transmitter away from vibration-heavy or high-heat sources.
Keep impulse lines clean and filled to prevent condensation or blockages.
Ground and shield all wiring to avoid signal interference.
Perform annual calibration checks for critical applications.
Use built-in diagnostics for predictive maintenance and troubleshooting.

When installed correctly, the Rosemount 3051S delivers reliable and maintenance-free operation for years.

Why Choose The Transmitter Shop

The Transmitter Shop (TTS) supplies new and remanufactured Rosemount 3051S Pressure Transmitters, each tested and verified to meet factory standards.

Why Industries Trust TTS:

Factory-calibrated and performance-certified transmitters
Compatibility with leading process systems
Cost-effective alternatives to new OEM units
Fast delivery and expert technical guidance
Proven reliability across global industries

Every transmitter from TTS undergoes rigorous inspection and testing to ensure it performs with the same accuracy and dependability as a new unit — at a significantly reduced cost.

5 Frequently Asked Questions (FAQs)

1. What makes the Rosemount 3051S different from the 3051?
The 3051S offers higher accuracy, advanced diagnostics, and longer stability (up to 10 years) compared to the standard 3051 model.

2. Can the 3051S be used for flow measurement?
Yes. When paired with a primary element like an orifice plate, the 3051S can measure flow accurately using differential pressure.

3. Does it support wireless communication?
Yes. The 3051S is available in a WirelessHART® configuration for remote monitoring.

4. How often does the 3051S require calibration?
Typically once every 2–3 years, depending on process conditions, thanks to its long-term stability.

5. Is it suitable for harsh process environments?
Absolutely. The 3051S is constructed from corrosion-resistant materials and designed to withstand vibration, pressure spikes, and temperature extremes.