Rosemount 4051S provides 20-year warranty and stability, comprehensive diagnostics and enhanced ease-of-use
SHAKOPEE, Minn. (Oct. 23, 2025) – Today Emerson announced the release of the Rosemount™ 4051S Pressure Transmitter, a new industrial measurement solution with the flexibility to meet the most demanding pressure measurement challenges by increasing performance and operational insights.
This innovative pressure transmitter can provide local real-time control, eliminating the need for a separate device, such as a programmable logic controller. This functionality is provided by two relay switches, each of which can be configured to provide on/off control of pumps, motors and other equipment. These switches can also provide alerts based on pressure, flow, totalised flow, level, volume or module temperature.
The Rosemount 4051S Pressure Transmitter provides 20-year warranty and stability, comprehensive diagnostics and enhanced ease-of-use.
“The Rosemount 4051S Pressure Transmitter is designed to provide exceptional versatility and performance, helping customers improve operations and expand their pressure measurement capabilities across a broad range of industrial applications,” said Nathan Stokes, vice president pressure products with Emerson’s measurement instrumentation business.
The Rosemount 4051S has been engineered to withstand the toughest processes and the harshest environments, with a 20-year warranty and 20-year stability specification, both unique to the pressure transmitter market. A fast response time of 40 milliseconds allows the 4051S to be used in the most demanding applications. A best-in-class 800:1 turndown ratio reduces the number of unique models needed to be kept in stock, streamlining inventory.
Advanced diagnostics provide more insights, with loop integrity continuously monitoring the health of the entire electrical loop to detect potential failures. Plugged impulse line detection alerts plant personnel so they can take action, and the transmitter can also diagnose other abnormal conditions, such as cavitation, using its built-in process intelligence. Built-in calibration and diagnostic logs provide the information needed to optimise maintenance and perform root cause analysis.
Emerson’s Rosemount 4051S Pressure Transmitter provides real-time control in some applications, eliminating the need for a separate device, such as a programmable logic controller.
The graphical, backlit display is larger than previous models, making it easier to read and allowing inclusion of more descriptive warning messages, an always-on process variable value, and a customisable secondary area. The display can be configured in seven languages, and the intuitive user interface speeds and simplifies operator interactions, while reducing the risk of errors.
Bluetooth® connectivity from up to 15 metres (50 feet) away improves safety by allowing plant personnel to access the transmitter so they can avoid entering hazardous areas. This fast and easy connectivity increases productivity, reliability and safety by simplifying operator rounds. Configuration and troubleshooting are improved because operators are informed as to which devices need attention, and the AMS Device Configurator mobile app provides a seamless experience across all devices.
Guided proof-testing and logging simplifies these tasks with a step-by-step process. Built-in proof-testing provides reliable verification of instrument functionality to improve operational efficiency and safety, and the transmitter is certified to Safety Integrity Level 2/3 and IEC (International Electrotechnical Commission) 61508. Partial proof-testing includes in-situ capability, allowing you to extend proof-test intervals without applying an external pressure source.
Learn more at www.Emerson.com/Rosemount4051S.
The Rosemount 4051S Pressure Transmitter is engineered to give customers more insights, more performance and more flexibility.
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About Emerson
Emerson (NYSE: EMR) is a global industrial technology leader that provides advanced automation. With an unmatched portfolio of intelligent devices, control systems and industrial software, Emerson delivers solutions that automate and optimise business performance. Headquartered in St. Louis, Missouri, Emerson combines innovative technology with proven operational excellence to power the future of automation. For more information, visit Emerson.com.
Further press information
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