ROSEMOUNT 3051TG2A2B21AB4M5 Pressure Transmitter

Product Overview

The ROSEMOUNT 3051TG2A2B21AB4M5 is a high-performance intelligent pressure transmitter manufactured by Emerson’s Rosemount brand. It belongs to the 3051 series of direct-mount gauge pressure transmitters. This product utilizes advanced capacitive sensor technology and is designed for pressure and level measurement applications in industrial process control, featuring high accuracy, high stability, and long-term reliability.

Technical Specifications

Basic Performance

Measurement Type: Gauge Pressure Measurement

Overall Performance: ±0.15%FS

Accuracy: ±0.075%FS

Measurement Range: Calibrated range from 0.3 to 10000 psi (0.02 to 689.47 bar)

Turndown Ratio: Up to 150:1

Stability: ±0.125% over 10 years after installation

Response Time: Minimum 200 milliseconds

Output Characteristics

Output Signal: 4-20mA with digital signal based on HART protocol

Communication Protocol: Supports HART, WirelessHART, FOUNDATION Fieldbus, Profibus, 1-5V Low Power HART

Resolution: 15-bit

Process Connection

Process Connection Type: 1/2-14NPT female thread

Isolation Diaphragm Material: 316L Stainless Steel

Process Wetted Parts Material: 316L Stainless Steel

Filling Fluid: Silicone oil

Housing Material: Aluminum, polyurethane coated

Conduit Entry: 1/2-14NPT

Environmental Adaptability

Operating Temperature: -20°C to +70°C

Protection Rating: IP66

Certifications: IEC 61508 SIL 2/3 certified, NSF, NACE certified, Hazardous location certified

Operating Principle

The ROSEMOUNT 3051TG2A2B21AB4M5 pressure transmitter uses capacitive sensor technology. During operation, the process pressure is transmitted through the isolation diaphragm and filling fluid to the sensing diaphragm at the center of the sensor. The sensing diaphragm is a tensioned elastic element whose displacement changes with the applied pressure. The maximum displacement is 0.004 inches (0.1 mm), and the displacement is proportional to the pressure. Capacitive plates on both sides detect the position of the sensing diaphragm, and the difference in capacitance between the sensing diaphragm and the capacitive plates is converted into a corresponding current, voltage, or digital HART output signal.

Product Features

1. High-Precision Measurement

Using advanced capacitive sensor technology, it achieves an accuracy of up to ±0.075%FS, with a reference accuracy of 0.04%, meeting high-precision measurement requirements.

2. Long-Term Stability

Provides 10-year stability after installation, maintaining range accuracy within ±0.125%, significantly reducing calibration and maintenance costs.

3. Flexible Turndown Ratio

A turndown ratio of up to 150:1 provides a wide measurement range and excellent application flexibility, adapting to the measurement needs of different working conditions.

4. Multiple Communication Protocols

Supports multiple communication protocols such as HART, WirelessHART, FOUNDATION Fieldbus, and Profibus, facilitating integration into various control systems.

5. Diagnostic Functions

Features loop integrity diagnostics and impulse line blockage diagnostics, detecting electrical circuit problems and impulse line blockages before they affect process quality, improving system safety and reducing downtime.

6. Safety Certification

Certified to IEC 61508 SIL 2/3 (by a third party), meeting hazardous location certification requirements and suitable for safety-critical applications.

Application Areas

The ROSEMOUNT 3051TG2A2B21AB4M5 pressure transmitter is widely used in the following areas:

Petrochemical Industry

Used to measure critical parameters such as reactor pressure, pipeline pressure, and tank liquid level, ensuring the stability and safety of the production process.

Power Industry

Used for pressure and liquid level measurement in boiler feedwater systems, steam systems, and condensation systems, ensuring the safe operation of power generation equipment.

Water Treatment

Used for pressure monitoring and liquid level control in wastewater treatment plants, and for pressure measurement in drinking water treatment processes.

Food and Beverage

Used for pressure measurement in food processing and beverage production processes, ensuring product quality and production safety.

Pharmaceutical Industry

Used for precise pressure control in pharmaceutical production processes, meeting GMP requirements. Model Analysis

The meaning of the 3051TG2A2B21AB4M5 model code is as follows:

3051: Product Series

TG: Gauge Pressure Transmitter

2: Pressure Range Code (0-1.5 to 0-150 psig)

A: Output Type (4-20mA HART)

2B: Process Connection Type (1/2-14NPT Female Thread)

2: Isolating Diaphragm Material (316L Stainless Steel)

1: Filling Fluid (Silicone Oil)

A: Housing Material (Aluminum, Polyurethane Coating)

B4: Mounting Bracket (2-inch Pipe Mounting or Panel Mounting Bracket)

M5: LCD Display Option

Installation and Maintenance

Installation Requirements

Ensure the process connection is clean and free of contaminants before installation.

Tighten the process connection to the correct torque.

Ensure the transmitter housing is properly grounded.

When installing in hazardous locations, relevant safety regulations must be followed.

Maintenance Suggestions

Regularly check the transmitter status and output signal.

Clean the transmitter housing regularly according to the operating environment.

Use a HART communicator for remote diagnostics and calibration.

Calibration verification is recommended every 5 years.

Choose Shenzhen Changxin, choose peace of mind, worry-free after-sales service! Large stock available, same-day SF Express shipping!!!