Detailed Description 3051CD3A23A2AB belongs to classic Rosemount 3051C coplanar DP transmitter series. CD means differential pressure measurement; 3 is sensor range code with calibrated span from 1.034bar to 10.34bar. A represents 4-20mA+HART digital communication; 2 is 316L stainless steel diaphragm; 3 is silicone oil fill fluid; A stands for standard O-ring; 2 is aluminum explosion-proof housing; AB are extra factory option codes. Powered by 10.5–42.4V DC two-wire loop power, it outputs 4–20mA analog signal superimposed with HART digital protocol, supporting communication with HART hand communicator, DCS and asset management software.

It adopts coplanar flange structure, compatible with 3-valve manifold or 5-valve manifold for convenient field installation. It supports linear or square root output for orifice plate flow measurement. It is equipped with plugged impulse line diagnostic, loop integrity monitoring, sensor self-diagnosis and NAMUR alarm function. The turndown ratio reaches up to 150:1, featuring high stability and low long-term drift. Local zero/span adjustment button allows on-site calibration without opening the housing cover.

Built-in protections include reverse polarity protection, overpressure protection, overtemperature alarm and sensor fault diagnosis. With explosion-proof certification, it can be installed in hazardous areas. Ambient working temperature: -40℃ ~ +85℃, process fluid temperature: -40℃ ~ +121℃. Housing protection grade IP66. SIL2 safety certification is available for safety instrument system.

3051CD3A23A2AB is a mature and widely used Rosemount instrument. Many chemical, power and oil process plants still adopt this DP transmitter. When the original transmitter fails, replacing it with identical 3051CD3A23A2AB can reuse existing manifold, impulse piping, two-wire cable and DCS configuration without redesigning the measuring loop. Technicians complete mounting, pressure piping connection, HART parameter configuration and calibration, so the differential pressure/flow/level measuring loop resumes operation and cuts downtime.

Before shipment, every 3051CD3A23A2AB undergoes comprehensive inspection including power-on self-test, 4-20mA output calibration, HART communication test, pressure calibration, leak test and fault simulation. All products come with 12-month warranty. Our automation technical team provides remote support for wiring, HART configuration, range setting, calibration and fault diagnosis. Fast global shipping available for urgent maintenance orders.

For automation maintenance engineers and system integrators, 3051CD3A23A2AB is reliable spare differential pressure transmitter for legacy Rosemount process measurement systems. It restores accurate flow and liquid level monitoring, extends service life of process assets and avoids high-cost whole measurement loop renovation.