Rosemount 2051L flange-mounted level transmitter
The Rosemount 2051L Level Transmitter is a highly reliable and compact differential pressure device engineered for precise level, interface, or density measurements in a wide range of industrial applications. Designed for direct mounting or Tuned-System™ configurations, it delivers exceptional accuracy (up to ±0.05% of span), robust protocol support (HART®, WirelessHART®, Fieldbus, PROFIBUS®), and long-term stability. With SIL 2/3 safety certification, corrosion-resistant wetted materials, and a user-friendly Local Operator Interface (LOI), it ensures dependable performance even in harsh environments—making it an ideal solution for critical level measurement tasks.
Key words:
level
transmitter
Classification:
Rosemount transmitter
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Detailed introduction
The reliable Rosemount 2051L level transmitter is a flange-mounted level transmitter specifically designed for measuring liquid levels in the Rosemount 2051 series of transmitters. This level transmitter offers a variety of process connections, materials, and output protocols to meet diverse level measurement needs. The transmitter is safety certified and can be used with the Tuned-System™ level components or installed directly. Simple on-site commissioning is achievable through the Local Operator Interface (LOI).
Product Specifications:
| Parameter | Specification |
|---|---|
| Transmitter Type | Differential Pressure (DP) Level Transmitter |
| Measurement Range | Up to 100:1 turndown; varies based on model and configuration |
| Output Signal | 4–20 mA HART®, WirelessHART®, FOUNDATION™ Fieldbus, PROFIBUS®, 1–5 Vdc Low Power |
| Accuracy | ±0.05% of span (depending on range code and conditions) |
| Stability | ±0.10% of URL for 5 years |
| Mounting Configuration | Direct-mount or Tuned-System™ level assembly |
| Process Temperature | -101°C to 205°C (depends on fill fluid and materials) |
| Process Pressure | Up to 20.7 MPa (3000 psi) |
| Materials of Construction | 316L SST, Alloy C-276, Tantalum, others available |
| Display Options | Local Operator Interface (LOI) with LCD |
| Certifications | SIL 2/3, CSA, FM, ATEX, IECEx, INMETRO, NEPSI, EAC |
| Ingress Protection | IP66/IP68, NEMA 4X |
| Power Supply | 10.5–55 Vdc (depending on protocol and configuration) |
Product Features:
Here are the key features of the Rosemount 2051L Level Transmitter, crafted for reliability, flexibility, and precision in industrial level measurement:
Compact, Lightweight Design – Ideal for direct mounting on tanks and vessels without bulky brackets.
Tuned-System™ Capability – Enhances performance when paired with Rosemount diaphragms and capillaries, reducing temperature and static pressure effects.
Multivariable Output Options – Measures level, interface, or density using differential pressure principles.
Robust Communication Protocols – Supports 4–20 mA HART®, WirelessHART®, FOUNDATION™ Fieldbus, and PROFIBUS®.
High Accuracy – Up to ±0.05% of span with excellent long-term stability (±0.10% URL for 5 years).
SIL 2/3 Safety Certification – Suitable for use in safety instrumented systems (SIS), with complete FMEDA documentation.
Broad Application Range – Works across wide process pressures and temperatures (up to 20.7 MPa / 3000 psi).
Material Versatility – Wetted materials include 316L SST, Alloy C-276, and Tantalum for corrosive environments.
Local Operator Interface (LOI) – LCD screen with push-button access for field configuration and diagnostics.
SmartPower™ Technology – Extends battery life in WirelessHART® installations, minimizing maintenance in remote areas.
Frequently Asked Questions – Rosemount 2051L
1. What type of measurement does the 2051L perform?
It measures liquid level, interface, or density using differential pressure (DP) principles, often with remote diaphragm seals.
2. Can it be used in safety-critical applications?
Yes, it’s SIL 2/3 certified per IEC 61508 and comes with FMEDA documentation for use in Safety Instrumented Systems (SIS).
3. What communication protocols are supported?
It supports 4–20 mA HART®, WirelessHART®, FOUNDATION™ Fieldbus, PROFIBUS®, and 1–5 Vdc Low Power HART®.
4. What is the accuracy of the transmitter?
It offers up to ±0.05% of span accuracy, depending on the range and configuration.
5. What materials are available for wetted parts?
Options include 316L SST, Alloy C-276, and Tantalum, making it suitable for corrosive environments.
6. Is it suitable for high-pressure or high-temperature applications?
Yes. It handles pressures up to 3000 psi (20.7 MPa) and temperatures from -157°F to 401°F, depending on fill fluid and materials.
7. Does it support local configuration?
Yes, it features a Local Operator Interface (LOI) with an LCD screen for easy field commissioning without external tools.
8. What mounting options are available?
It supports direct mounting and Tuned-System™ Level assemblies for improved performance in dynamic conditions.
9. Is it compatible with diaphragm seal systems?
Absolutely. It integrates seamlessly with Rosemount 1199 and 1299 diaphragm seal systems, including flushing ring options.
10. What certifications does it carry?
In addition to SIL, it holds ATEX, IECEx, FM, CSA, NEPSI, INMETRO, and EAC certifications for hazardous locations.
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