3051C with exclusive serial number 8906494 is an Emerson Rosemount coplanar smart pressure transmitter utilizing proprietary coplanar modular structure. The device measures differential pressure, gauge pressure and absolute pressure, widely deployed in thermal power, petrochemical and oil & gas sectors for pipeline pressure monitoring, closed tank level measurement and differential flow measurement matched with orifice and annubar flow primary elements.

A high-precision capacitive sensing core converts process pressure into standard electrical signals with superimposed digital communication. Its coplanar body allows direct assembly with three-valve or five-valve manifolds without transitional adapters, simplifying field impulse piping layout and lowering leakage hazards. Built-in intelligent diagnostic circuits continuously check impulse line clogging and circuit faults to reduce unplanned downtime and maintenance costs, and each unit finishes factory calibration and pressure testing for direct field commissioning after installation.

Reference accuracy reaches ±0.04% of full calibrated span, while overall installed performance stays within ±0.15% full scale. The maximum adjustable turndown ratio is 150:1 to support flexible onsite range modification without hardware replacement, and five-year long-term stability is controlled within ±0.125% of set measurement span under continuous operating conditions.

Standard output is 4–20mA analog signal with HART7 digital communication, supporting remote parameter configuration via handheld communicator or DeltaV DCS system. Optional communication protocols include FOUNDATION Fieldbus H1, PROFIBUS PA and WirelessHART based on customized order. For regular loop-powered HART type, the required supply voltage ranges from 10.5VDC to 42.4VDC.

Default wetted parts including isolation diaphragms and coplanar flanges adopt 316L stainless steel. Corrosion-resistant alternative materials such as Hastelloy C-276, Monel alloy and tantalum are available for corrosive medium and NACE sour working environment. The outer housing is cast aluminum with anti-corrosion epoxy coating, and silicone oil serves as standard internal sensor fill fluid for common process conditions.

Ambient operating and storage temperature both range from -40℃ to +85℃, with applicable relative humidity between 5% and 95% under non-condensing surroundings. Equipped with standard silicone fill fluid, the allowable process medium temperature covers -40℃ to +120℃.

Optional backlit local LCD realizes on-site real-time data display and zero-span trimming, and integrated body push buttons enable field calibration without extra auxiliary tools. Advanced onboard diagnostics cover blocked impulse line detection, power loop monitoring and abnormal process warning.

This transmitter holds SIL2/SIL3 certification complying with IEC61508, alongside ATEX and FM explosion-proof approvals to fit installation in hazardous classified areas, and it is covered by five-year limited manufacturer warranty provided by Emerson.

Main usages contain differential flow detection on industrial pipelines, hydrostatic liquid level measurement of sealed storage tanks, real-time pressure monitoring for power plant boilers and chemical reactor piping, as well as pressure supervision of natural gas and crude oil transmission pipelines.