Rosemount 3051S Coplanar Pressure Transmitter
Overview
The Rosemount 3051S pressure transmitter is Emerson’s scalable SuperModule™-based platform engineered to meet the full range of pressure, differential pressure flow, and level measurement requirements found across modern process plants. Built on patented Rosemount Coplanar technology, the 3051S delivers optimized performance whether configured as a straightforward pressure transmitter, a DP flow solution, or a DP level instrument, and is available with both wired 4…20 mA HART and WirelessHART® communication options for maximum installation flexibility.
For refineries, petrochemical plants, and process facilities across Oman and the wider GCC, the 3051S offers industry-leading long-term stability and accuracy that reduces recalibration frequency and lowers total cost of ownership across large transmitter populations. Seven Star LLC supplies the Rosemount 3051S pressure transmitter to customers in Muscat, Sohar, Salalah, and across the Sultanate of Oman as a trusted Emerson Rosemount distribution supplier, ensuring genuine equipment, full documentation, and factory-backed technical support.
Measurement and Operating Principle
The 3051S SuperModule sensing platform uses a capacitance-based sensing cell to detect differential, gauge or absolute pressure, converting the mechanical deflection of the sensing diaphragm into a proportional electrical signal. This design gives strong resistance to overpressure and line pressure effects, helping the transmitter hold rated accuracy through process upsets that would degrade less robust sensor technologies. In its Ultra performance class it achieves accuracy as tight as ±0.025% with rangedown up to 200:1, allowing a single transmitter to be specified across a wide span of process conditions.
Advanced Diagnostics built into the 3051S electronics provide three layers of insight: Process Intelligence for proactive monitoring of abnormal process and equipment conditions, Plugged Impulse Line diagnostics for detecting blocked or restricted process connections, and Loop Integrity diagnostics for continuous monitoring of the electrical loop from transmitter to control system. Together these diagnostics support predictive maintenance strategies and help reduce unplanned downtime across critical measurement points.
Engineering Design of the Rosemount 3051S
The 3051S is available in multiple communication protocol configurations including 4…20 mA HART, WirelessHART, and FOUNDATION Fieldbus, giving system integrators the flexibility to specify the same proven sensing platform across wired and wireless network architectures. Transmitters, flow meters, and seal systems built on the 3051S platform arrive fully assembled and leak tested from the factory, simplifying field installation and reducing commissioning time. An optional Bluetooth wireless interface allows technicians to configure and troubleshoot the transmitter from a mobile device without opening the electronics housing, improving safety and efficiency during maintenance in hazardous areas.
The 3051S Ultra and Ultra for Flow performance classes are backed by a 15-year stability specification and matching 15-year limited warranty, reflecting Emerson’s confidence in the platform’s long-term measurement integrity. Safety-instrumented system applications are supported through SIL 2/3 certification to IEC 61508 via independent third-party assessment, along with prior-use certification and FMEDA data for safety system design documentation. The platform supports direct mounting, remote mounting, and balanced and tuned multi-sensor systems to accommodate a wide variety of process and installation requirements.
Key Features
- Patented Coplanar SuperModule sensing platform for pressure, DP flow, and DP level
- Accuracy to ±0.025% with rangedown up to 200:1 (Ultra performance class)
- 15-year stability specification and matching limited warranty
- Advanced Diagnostics: Process Intelligence, Plugged Impulse Line, Loop Integrity
- Wired 4…20 mA HART, WirelessHART, and FOUNDATION Fieldbus options
- SIL 2/3 certified to IEC 61508 for safety-instrumented systems
- Optional Bluetooth configuration and diagnostics
- Factory-assembled and leak-tested transmitters, flow meters, and seal systems
Performance Classes of the Rosemount 3051S
The Rosemount 3051S is ordered against a performance class code, and the distinction matters commercially because it fixes both the accuracy and the warranty a plant receives. Performance class 1, Ultra, is specified at 0.025 percent of span differential pressure accuracy with 200:1 rangedown, 15-year stability, and a 15-year limited warranty. Performance class 2, Classic, is specified at 0.035 percent of span with 150:1 rangedown and the same 15-year stability but without the extended warranty. Performance class 3, Ultra for Flow, is specified at 0.04 percent of reading DP accuracy with 200:1 rangedown, 15-year stability, and a 15-year limited warranty, and is the class normally selected where the transmitter is integral to a flow meter assembly.
Accuracy is also range dependent. On absolute pressure sensors, ranges 1 to 4 hold the Ultra figure of 0.025 percent of span, while range 0 is specified at 0.075 percent of span; below a 10:1 turndown the specification moves onto a URL-over-span formula rather than remaining flat. Where the 3051S is supplied as part of a Rosemount flow meter, the published figures shift to flow rate terms, with Ultra for Flow rated at 0.8 percent of flow rate and 14:1 flow turndown. Specifying the correct class against the actual turndown is the single most common source of disappointed accuracy expectations in the field, and Seven Star LLC sizes the 3051S against real process data before quoting.
Electrical and Environmental Limits
The 3051S requires an external supply of 10.5 to 42.4 Vdc with no load, rising to 12 to 42.4 Vdc when the Advanced HART Diagnostics Suite is fitted. Power supply effect is less than 0.005 percent of calibrated span per volt change at the transmitter terminals, and the transmitter meets the industrial environment requirements of EN 61326 and NAMUR NE-21 with maximum deviation under 1 percent of span during EMC disturbance. Ambient temperature limits run from -40 to +185 °F (-40 to +85 °C), a span that comfortably covers Omani summer conditions in unshaded outdoor installations.
Overpressure capability is a function of sensor range rather than a single headline number. A range 0 Coplanar DP or GP sensor withstands 750 psi (51.71 bar), range 1 withstands 2,000 psi (137.90 bar), and ranges 2 through 5 withstand 3,626 psi (250.00 bar) without damage. Where higher static pressure is present, option code P9 raises the static pressure limit to 4,500 psig (310 bar) and option code P0 to 6,092 psig (420 bar) on 3051S_CD assemblies. Process isolating diaphragms are available in 316L stainless steel, alloy C-276, alloy 400, and gold-plated 316L SST, which allows the same Rosemount 3051S platform to be specified for sour service and chloride-bearing seawater duties alongside conventional hydrocarbon applications.
Industrial Applications
The Rosemount 3051S is deployed extensively across refining, petrochemical, upstream oil and gas, and power generation facilities for differential pressure flow measurement across orifice plates and other primary flow elements, direct pressure measurement, and DP-based level measurement in vessels and tanks. Its advanced diagnostics and long-term stability make it especially valuable for safety-instrumented systems and custody transfer applications where measurement integrity directly affects plant safety and commercial outcomes.
Across Oman’s oil, gas, and process industries, including facilities supporting the Sohar and Salalah industrial zones, the 3051S gives instrumentation engineers a proven, scalable platform that standardizes pressure measurement across an entire facility while reducing spares and training complexity. As a trusted supplier of Emerson Rosemount products, Seven Star LLC supports these projects across the Sultanate of Oman with transmitters sourced on request, application engineering, and technical support.
Technical Specifications
| Model | Rosemount 3051S |
| Type | Coplanar SuperModule pressure transmitter |
| Measured Variables | Differential, gauge, and absolute pressure; DP flow; DP level |
| Accuracy | Up to ±0.025% (Ultra performance class) |
| Rangedown | Up to 200:1 |
| Communication | 4…20 mA HART, WirelessHART, FOUNDATION Fieldbus |
| Stability | 15-year specification |
| Safety Certification | SIL 2/3 to IEC 61508 |
| Configuration Interface | Optional Bluetooth wireless |
| Manufacturer | Emerson Rosemount |
| Performance Classes | Ultra 0.025% span / 200:1; Classic 0.035% span / 150:1; Ultra for Flow 0.04% reading / 200:1 |
| Warranty | 15-year limited (Ultra and Ultra for Flow); 3-year and 5-year options available |
| Power Supply | 10.5 to 42.4 Vdc (12 to 42.4 Vdc with Advanced HART Diagnostics Suite) |
| Power Supply Effect | Less than ±0.005% of calibrated span per volt |
| Ambient Temperature Limits | -40 to +185 °F (-40 to +85 °C) |
| Overpressure Limit | 750 psi (range 0) to 3,626 psi / 250 bar (ranges 2–5), DP and GP |
| Static Pressure Options | P9: 4,500 psig (310 bar); P0: 6,092 psig (420 bar) |
| Isolating Diaphragm Materials | 316L SST, alloy C-276, alloy 400, gold-plated 316L SST |
| EMC | EN 61326 and NAMUR NE-21; <1% span deviation during disturbance |
Order Your Rosemount 3051S Today
Contact Seven Star LLC to request a quotation, datasheet, or technical consultation for the Rosemount 3051S pressure transmitter. As a trusted Emerson Rosemount supplier serving Muscat, Sohar, Salalah, and the greater Sultanate of Oman, Seven Star LLC supplies instrumentation on request with manufacturer documentation and dedicated technical support for pressure, flow, and level measurement projects across the GCC.
Other Models in the Rosemount 3051 Pressure Transmitters Range
Seven Star LLC supplies models from the Rosemount 3051 Pressure Transmitters range in Oman and the GCC. Compare the related models below and request a quote for the one that matches your application.
| Model | Category | |
|---|---|---|
| Rosemount 3051 Pressure Transmitter | Pressure Instrumentation | View details |
| Rosemount 3051 Coplanar Pressure Transmitter | Pressure Instrumentation | View details |
| Rosemount 3051S Series of Instrumentation | Pressure Instrumentation | View details |
| Rosemount 3051S Coplanar Pressure Transmitter | Pressure Instrumentation | You are viewing this model |
| Rosemount 3051SAL Liquid Level Transmitter | Level Instrumentation | View details |
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- Instruction Manual Rosemount 3051S Coplanar Pressure Transmitter Manual Download
Rosemount product families on this page
Pressure includes the 3051 in its variants (3051T in-line, 3051L for liquid level, 3051CF DP flowmeter and the 3051SMV MultiVariable transmitter), the 2051 and 1199 diaphragm seal systems. Level instruments are the 3300 guided wave radar, the 5408 non-contacting radar and the 2120 vibrating fork switch. Temperature is covered by the 248 and 644 head mount transmitters and the 848T high density transmitter for multiple sensor inputs. The 8800D vortex flowmeter and the 702 wireless discrete transmitter are also listed, along with liquid analysis sensors.Where Rosemount instruments are used
These are standard instruments in oil and gas production, refining, petrochemical, power and water plants. Typical duties are line and vessel pressure, differential pressure flow across orifice plates, tank and separator level and interface, and temperature measurement on pipes, reactors and rotating equipment.Ordering Rosemount transmitters: what we need
Send the complete model string and the serial number from the nameplate; a photo is ideal. Every character of the string selects something: range, output, materials of the isolating diaphragm and flange, process connection, housing, approval and options. If you are specifying a new point, give the measured variable and span, process fluid, pressure and temperature, connection, output (4-20 mA HART, FOUNDATION Fieldbus or wireless), display and hazardous area approval. For remote seals add flange size, rating and capillary length.Browse Rosemount products by category: Pressure Instrumentation, Temperature Instrumentation, Level Transmitter, Liquid Analysis Sensors, Flowmeters.
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