Rosemount 2051L Flange Diaphragm Level Transmitter

1. General Description

The Rosemount 2051L Flange Diaphragm Level Transmitter is part of the Rosemount 2051L family. Engineers design it for level measurement in tough industrial settings. It offers good stability for accurate readings.

We call this device the Rosemount 2051L Liquid Level Transmitter. It measures the level and specific gravity of liquids, slurries, powders, and granular materials. It does this accurately.

As a flange-mounted liquid level transmitter, it supports a wide variety of process applications while offering excellent protection. The flange diaphragm design protects the transmitter diaphragm from corrosive, erosive, or extreme temperature processes, ensuring long-term reliability.

The 2051L works well with modern systems. It supports the Tuned-System™ Level assembly for better performance in tough process conditions.

2. How accurate is the Rosemount 2051 pressure transmitter?

The Rosemount 2051 Pressure Transmitter series provides high accuracy across multiple applications:

l 2051C: ±0.10% of span (standard), ±0.065% (high performance)

l 2051T: ±0.065% of span (standard), ±0.05% (high performance)

l Rosemount 2051L: ±0.075% of span

These transmitters, including the Rosemount 2051 Pressure Transmitter family, maintain excellent measurement stability for reliable process control.

3. What is the difference between Rosemount 2051 and 3051?

The Rosemount 2051 offers reliable accuracy (±0.075% of span) for general industrial applications and level measurement tasks.

The Rosemount 3051 offers better accuracy, with a range of up to ±0.04% of span. It also has improved diagnostics for better predictive maintenance and real-time performance monitoring.

4. What is the pressure range?

l 2051C: Differential/gauge pressure 0.5 inH₂O to 2000 psi

l 2051T: Absolute/gauge pressure 0.3 psi to 10,000 psi

l Rosemount 2051L: Designed for level and specific gravity measurement with ranges up to 300 psi

l 2051HT: For hygienic applications up to 800 psig or 150 psia

Each model ensures stable and accurate readings for its intended environment.

5. What is the turndown ratio of the Rosemount 2051?

The Rosemount 2051 family offers a turndown ratio capable of measuring down to roughly 12% of the maximum range. Actual turndown varies per model (gauge, absolute, differential). Always refer to the specific datasheet for precise values.

6. Technical Specifications

l Seal System Type: Direct Mount, Tuned-System

l Range: Up to 100:1

l Accuracy: Up to 0.05% of span

l Max Operating Pressure: Up to 300 psi (20.68 bar)

l Process Connection: Flanged (ANSI/ASME, EN/DIN, JIS)

l Process Temperature Range: –157°F (–105°C) to 401°F (205°C)

l Wetted Materials: 316L SST, Alloy C-276, Tantalum

l Diagnostics: Basic diagnostics

l Communication Protocols: HART®, FOUNDATION™ Fieldbus, PROFIBUS® PA

7. Features of rosemount 2051l level transmitters

l Integrated Local Operator Interface (LOI): Enables easy configuration and real-time adjustments.

l Material Versatility: Suitable for corrosive or aggressive media.

l SIL Certification: Complies with IEC 61508 functional safety requirements.

l Flushing Ring Option: Simplifies calibration and cleaning.

l Broad Compatibility: Works with ultrasonic, radar, and other level measurement instruments.

l Stable Level Measurement: The Rosemount 2051L delivers level measurement with good stability for long-term use.

8. Rosemount 2051L Applications

The Rosemount 2051L Liquid Level Transmitter gives accurate level measurements in many process conditions. This makes it suitable for:

l Chemical Processing: Accurate liquid-level control for reactors and tanks.

l Water/Wastewater: Continuous level measurement for pumping and filtration systems.

l Oil & Gas: Level measurement and safety monitoring under harsh conditions.

l Food & Beverage: Reliable process-level measurement to support product quality.

9. Installation Procedure (Step-by-Step)

9.1 Preparation

l Gather tools and safety gear.

l Ensure installation surfaces are clean and accessible.

9.2 Mounting

l Align the Rosemount 2051L flange-mounted liquid level transmitter with the process connection.

l Secure with bolts to ensure stability for liquids and solids.

9.3 Wiring

l Connect wiring according to control system diagrams.

l Ensure proper grounding/shielding for accurate signals.

9.4 Calibration

l Fill systems with required fill fluid if needed.

l Use LOI to configure level, density, or specific gravity measurement.

9.5 Testing

l Power on the system and verify communication.

l Validate accuracy, stability, and response.

9.6 Final Inspection

l Check all fittings for leaks.

l Record installation parameters for future reference.

10. Related Part Numbers

l 2051L2AB0BD1AAAE5 – Flange-Mounted Liquid Level Transmitter

l 2051L2AG0M – Flange-Mounted Liquid Level Transmitter

l 2051L3AA4FD21AAE5 – High-Pressure Flange-Mounted Liquid Transmitter

Rosemount 2051C Coplanar Pressure Transmitter

Rosemount 2051CG Pressure Transmitter

Rosemount 248 Temperature Transmitter

Back to the top: Rosemount