3051L*7555461
3051L with unique serial number 7555461 is a flange-mounted liquid level transmitter from Emerson Rosemount series. Equipped with extended diaphragm seal and capillary assembly instead of coplanar manifold structure, this model is specially engineered for hydrostatic tank level measurement, suitable for high viscosity, crystallizable or corrosive process media that cannot connect with impulse piping directly. It is widely deployed in petrochemical, thermal power, pharmaceutical and fine chemical industries for sealed and open storage tank continuous level monitoring.
Description
1. Product Overview
3051L with unique serial number 7555461 is a flange-mounted liquid level transmitter from Emerson Rosemount series. Equipped with extended diaphragm seal and capillary assembly instead of coplanar manifold structure, this model is specially engineered for hydrostatic tank level measurement, suitable for high viscosity, crystallizable or corrosive process media that cannot connect with impulse piping directly. It is widely deployed in petrochemical, thermal power, pharmaceutical and fine chemical industries for sealed and open storage tank continuous level monitoring.
The high-precision capacitive sensor converts hydrostatic pressure generated by liquid height into standard electrical signal with digital communication capability. Remote diaphragm and filled capillary effectively isolate the sensing core from harsh process fluid to avoid plugging or medium corrosion. Onboard intelligent diagnostic circuit monitors capillary leakage, diaphragm deformation and circuit loop abnormalities to reduce unexpected breakdown and maintenance expense. Each unit completes factory calibration and tightness test for direct commissioning after field installation.
2. Core Technical Specifications
Measurement Performance
Reference accuracy reaches up to ±0.04% of full calibrated span; total installed working accuracy is controlled within ±0.15% full scale. The maximum adjustable turndown ratio is 150:1 for flexible on-site range modification without hardware replacement. Five-year long-term stability is maintained within ±0.125% of calibrated measuring span under continuous production operation.
Electrical & Communication
Standard output is 4–20mA DC analog signal superimposed with HART7 digital communication, supporting remote parameter setting via handheld communicator or DeltaV DCS control system. Optional communication protocols include FOUNDATION Fieldbus H1, PROFIBUS PA and WirelessHART based on customer ordering requirement. Conventional loop-powered HART transmitter runs on input voltage ranging from 10.5VDC to 42.4VDC.
Construction & Wetted Materials
Default flange and remote diaphragm adopt 316L stainless steel as wetted material; alternative corrosion-resistant options including Hastelloy C-276, Monel alloy and tantalum are available for aggressive corrosive medium. Transmitter outer housing is die-cast aluminum coated with anti-corrosion epoxy paint; diversified filling fluid selections for capillary match different process medium temperature conditions.
3. Environmental Conditions
Ambient operating and storage temperature: -40℃ ~ +85℃; working relative humidity 5%~95% with no condensation. Allowable process medium temperature varies subject to selected capillary fill fluid grade to fit low temperature or high-temperature working scenarios.
4. Functions and Certifications
Optional backlit local LCD enables on-site real-time level reading and zero/span trimming operations. Built-in body push buttons support field calibration without extra calibration instruments. Advanced diagnostic functions cover diaphragm damage detection, capillary leakage early warning and signal loop fault inspection.
This level transmitter holds SIL2/SIL3 certification complying with IEC61508 functional safety standard, as well as ATEX and FM explosion-proof approvals for installation in hazardous classified areas, covered by Emerson five-year limited factory warranty.
5. Typical Application
Continuous level measurement of high-viscosity oil storage tanks, corrosive chemical vessels, high-temperature reactor tanks and water & wastewater buffer tanks of power generation plants.
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