The Rosemount 3051C Coplanar Differential Pressure Transmitter represents the industry-leading standard for precision pressure measurement in demanding industrial environments. Engineered with a robust coplanar platform design, this transmitter delivers exceptional stability and reliability across a wide range of process conditions. The 3051C model integrates a direct-mounted coplanar sensor module that eliminates the need for traditional impulse piping, significantly reducing installation complexity, potential leak points, and long-term maintenance requirements. Whether deployed in oil and gas production facilities, chemical processing plants, power generation stations, or water treatment systems, this transmitter provides accurate and repeatable differential pressure readings that form the foundation of reliable process control strategies. With its proven field performance and extensive installed base worldwide, the Rosemount 3051C remains the preferred choice for engineers and plant operators who require uncompromising measurement integrity and operational uptime.
Built around a hermetically sealed 316L stainless steel sensor diaphragm, the 3051C coplanar transmitter maintains consistent performance under harsh operating conditions including high static pressures, temperature fluctuations, and corrosive media exposure. The coplanar architecture supports multi-variable measurement capability, enabling simultaneous monitoring of differential pressure, static pressure, and process temperature within a single integrated instrument. This multi-variable functionality reduces the total number of instruments required per application, lowers installation and wiring costs, and simplifies asset management across the entire plant lifecycle. The transmitter incorporates advanced sensor characterization algorithms that compensate for ambient temperature effects and line pressure variations, ensuring measurement accuracy is maintained regardless of changing environmental conditions. Field-proven across millions of installations, the 3051C coplanar platform continues to set the benchmark for differential pressure measurement excellence in industrial automation.
Key Features| Parameter | Specification |
|---|---|
| Model | Rosemount 3051C Coplanar |
| Measurement Type | Differential Pressure |
| Sensor Platform | Coplanar (Direct-Mounted Manifold) |
| Output Signal | 4-20mA with HART Digital Protocol |
| Measurement Range | 0.1 inH2O to 2000 psi (137.89 bar) |
| Rangedown (Turndown) | Up to 150:1 |
| Reference Accuracy | ±0.065% of calibrated span |
| Long-Term Stability | ±0.125% of URL for 5 years |
| Process Wetted Material | 316L SST, Alloy C-276, Alloy 400, Tantalum, Gold-Plated Alloy 400 |
| Process Connection | 1/4-18 NPT or 1/2-14 NPT Female |
| Power Supply | 10.5 to 42.4 VDC (loop-powered) |
| Ambient Temperature Range | -40°C to 85°C (-40°F to 185°F) |
| Process Temperature Range | -40°C to 121°C (-40°F to 250°F) |
| Housing Material | Low-Copper Aluminum Alloy or 316L SST |
| Ingress Protection | IP66/IP67, NEMA 4X |
| Certifications | CE, ATEX, IECEx, FM, CSA, SIL 2 Certified per IEC 61508 |
| Warranty | Up to 5-Year Limited Warranty |
The Rosemount 3051C Coplanar Differential Pressure Transmitter serves a diverse range of demanding industrial applications that require accurate, repeatable, and stable pressure measurement. In the oil and gas industry, it is extensively deployed for custody transfer metering, separator vessel level measurement, gas compressor differential monitoring, and pipeline leak detection systems. Chemical and petrochemical facilities rely on the 3051C for reactor pressure control, distillation column differential monitoring, filter condition assessment, and safety instrumented system functions where SIL 2 certification is essential for risk reduction compliance. Power generation plants utilize these transmitters for boiler drum level measurement, feedwater flow monitoring, steam turbine performance optimization, and flue gas desulfurization process control.
Water and wastewater treatment operations depend on the 3051C for influent and effluent flow measurement through primary flow elements, clarifier sludge blanket level monitoring, chemical dosing control, and membrane filtration pressure supervision. The food and beverage industry employs these transmitters in sanitary process applications including pasteurization, fermentation tank pressure monitoring, clean-in-place (CIP) system management, and filtration differential pressure tracking. Furthermore, the pharmaceutical sector integrates the 3051C into critical manufacturing processes such as bioreactor pressure regulation, lyophilization chamber monitoring, sterile water for injection (WFI) system pressure control, and cleanroom HVAC differential pressure maintenance. The transmitter's multi-protocol communication capability ensures straightforward integration with distributed control systems, programmable logic controllers, and asset management platforms from all major automation vendors.
Packaging & Quality AssuranceEach Rosemount 3051C Coplanar Differential Pressure Transmitter undergoes a comprehensive factory acceptance test program prior to shipment. This includes full-range calibration verification, HART communication protocol validation, hydrostatic pressure testing at 150% of maximum working pressure, insulation resistance measurement, and visual inspection of all external surfaces and markings. Every transmitter is individually serialized and accompanied by a traceable calibration certificate documenting the as-shipped performance data. The instrument is packaged in anti-static protective wrapping with silica gel desiccant to prevent moisture ingress during transit, then secured in custom-cut high-density foam inserts within a reinforced export-grade corrugated carton. For international shipments, the carton is placed inside a fumigated wooden crate compliant with ISPM 15 international phytosanitary standards. Our quality management system is certified to ISO 9001:2015, and every transmitter is backed by an industry-leading warranty program of up to five years covering manufacturing defects and workmanship. Technical support, commissioning assistance, and on-site service are available through our global network of authorized service centers. For large project quantities or custom configuration requirements, contact our sales engineering team to discuss your specific application needs.
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