Featuring best-in-class performance and measurement stability, the Rosemount 3051S Electronic Remote Sensor (ERS™) System is engineered with flexible, digital architecture. The ERS System calculates differential pressure electronically using two pressure sensors linked together with an electrical cable. Easy to install, this safety-certified system is engineered for faster response time than traditional systems, providing you with exceptional performance in a wide range applications.
Up to ±0.025% of span
Up to 15-yr limited Warranty
Up to 200:1
Max. Operating Pressure
Up to 10,000psi (689.48 bar)
Process Temperature Range
Based on fill fluid - Maximum 770°F (410°C), Minimum -157°F (-105°C)
4-20 mA HART®
Seal System Type
Welded-Repairable, All Welded
Flanged: ANSI/ASME, EN/DIN, GOST, & JIS
Process Wetted Material
316L SST, Alloy C-276, Alloy 400, Tantalum, Gold-plated Alloy 400, Gold-plated 316L SST, see full specs for complete list of materials
SIL 2/3 certified to IEC 61508 by an independent 3rd party, 3A, NSF, NACE®, hazardous location, see full specs for complete list of certifications
Provides DP Level measurements with a faster response time than traditional systems
Sensors are independently installed without heat tracing and insulation to offer simple installation
Digital architecture delivers stable measurement for applications with excessive temperature variation
Each sensor can be independently serviced for simplified maintenance
Entire system utilizes a single 2-wire, 4-20 mA HART® loop for straightforward system integration
Graphical interface of device dashboard offers simple configuration, commissioning and troubleshooting
Additional monitoring information of static pressure and sensor module temperature provide improved process insights
SIL 2/3 certified to IEC 61508 (via 3rd party) and prior-use certificate of FMEDA data for safety installations
Electronic Remote Sensor (ERS™) Systems provide DP Level measurements by calculating differential pressure from individual pressure readings. This solution eliminates the need for long capillaries and heat tracing, reducing response time by up to 90%. The sensor system is synchronized for DP calculation, easily connects with cable, and can be independently installed and serviced for simple installation and maintenance.
Thermal Range Expander
Thermal Range Expander enables pressure and level measurements in high temperature processes. This seal system uses two different fill fluids, extending the operating range of the transmitter from temperatures ranging from -75 °C (-103 °F) to 410 °C (770 °F). With an improved response time of up to 46%, thermal range expanders simplify installation and reduce cost by eliminating impulse piping and heat tracing.
With Wireless Technology, you can add new measurement points easily and cost-effectively in many areas of the plant including those that were previously inaccessible. This information allows you to better optimize your level measurements and reduce personnel exposure to hazardous environments. Get coverage over larger areas with long-range communication options up to 1 km (2/3 mi) between devices.
Diaphragm Seal System
The Diaphragm Seal System protects transmitters from hot, cold, corrosive, erosive or viscous processes. Seals are available with differential, gauge and absolute pressure transmitters. Advanced welding and assembly techniques prevent weld corrosion and improve seal strength to deliver reliability and performance in the toughest applications.