The 3051C transmitter bearing unique serial number 9721672 is an Emerson Rosemount smart coplanar pressure transmitter built around patented coplanar modular construction. It is engineered to measure differential pressure, gauge pressure and absolute pressure, extensively used in petrochemical, thermal power, oil and gas industries for pipeline pressure monitoring, sealed tank liquid level measurement and differential flow calculation paired with orifice plates and annubar primary flow elements.

A high-precision capacitive sensing element transforms physical process pressure into standard electrical output combined with digital communication capability. Its coplanar design enables direct connection with three-valve or five-valve manifolds without transition adapters, streamlining field impulse piping arrangement and minimizing potential leakage points. Embedded intelligent diagnostic circuitry automatically identifies blocked impulse tubing and electrical loop faults to cut unexpected maintenance and unplanned production shutdown. Every unit undergoes complete factory calibration and pressure verification to allow immediate onsite commissioning after installation.

Reference accuracy is up to ±0.04 percent of full calibrated span, with overall installed performance kept within ±0.15 percent full scale. The maximum adjustable turndown ratio reaches 150:1 to permit flexible onsite range reset without component replacement, and five-year long-term stability is maintained within ±0.125 percent of configured measuring span during continuous service.

Standard signal output is 4–20mA analog overlaid with HART7 digital communication, supporting remote parameter configuration via handheld communicator or DeltaV and other mainstream DCS platforms. Optional communication selections include FOUNDATION Fieldbus H1, PROFIBUS PA and WirelessHART against customized ordering. Conventional loop-powered HART variant operates on supply voltage ranging from 10.5VDC to 42.4VDC.

Standard process-contacting parts such as isolation diaphragms and coplanar flanges use 316L stainless steel. Alternative corrosion-resistant grades including Hastelloy C-276, Monel alloy and tantalum are available for aggressive corrosive fluid and NACE sour service conditions. The transmitter outer enclosure is cast aluminum finished with anti-corrosion epoxy coating, and silicone oil is the default internal sensor filling fluid for general working media.

Operating and storage ambient temperature both span from -40℃ to +85℃; permissible relative humidity falls between 5% and 95% under non-condensing environment. With standard silicone fill fluid, applicable process medium temperature ranges from -40℃ up to +120℃.

Optional backlit local LCD facilitates on-site real-time value reading as well as zero and span trimming. Integral body push buttons support field calibration without additional testing instruments. Advanced built-in diagnostics cover plugged impulse line detection, loop integrity monitoring and abnormal process condition early warning.

The transmitter holds SIL2/SIL3 functional safety certification per IEC61508 standard plus ATEX and FM explosion-proof certifications for installation in classified hazardous areas, and it is protected by Emerson’s five-year limited factory warranty.

It is widely applied for differential flow measurement on industrial process pipelines, hydrostatic level measurement of closed storage tanks, real-time pressure tracking on power plant boiler piping and chemical reactor circuits, alongside pressure supervision of crude oil and natural gas transmission pipelines across energy and chemical sectors.