Description

Rosemount 3051S Electronic Remote Sensor (ERS) System

The Rosemount 3051S ERS System is an advanced electronic differential pressure measurement solution designed to replace traditional capillary-based remote seal systems. It uses two 3051S pressure transmitters electronically linked to provide highly accurate and stable differential pressure measurements without the limitations of fill fluids or capillary lines.

The system is engineered for demanding process applications including level, flow, and pressure measurements in harsh and high-temperature environments.

System Configuration for Rosemount 3051S Electronic Remote Sensor (ERS) System

The ERS™ System consists of:

• One Primary 3051S transmitter (calculation and output)
• One Secondary 3051S transmitter (remote sensor)
• Electronic cable connection between sensors
• Optional remote diaphragm seals

Communication protocols available:

• HART®
• FOUNDATION™ Fieldbus
• WirelessHART® (where applicable)

Measurement Capabilities of Rosemount 3051S Electronic Remote Sensor 

Differential Pressure (DP)

• Suitable for level, flow, and interface measurement
• Eliminates capillary temperature effects

Static Pressure

• High accuracy static pressure measurement

Level Measurement

• Ideal for tall columns, separators, and pressurized tanks

Performance Specifications for Rosemount 3051S Electronic Remote Sensor (ERS) System

Parameter	Specification
Reference Accuracy	Up to ±0.025% of span
Long-Term Stability	Up to ±0.10% URL over 10 years
Rangeability	Up to 200:1
Response Time	≤ 100 ms
Update Rate	Configurable

Operating Conditions

Parameter	Specification
Process Temperature	Up to 400°C (depending on seal configuration)
Ambient Temperature	-40°C to +85°C
Maximum Working Pressure	Up to 10,000 psi (689 bar)
Hazardous Area Certifications	ATEX, IECEx, FM, CSA

Mechanical Specifications

• Wetted Materials: 316L SST, Alloy C-276, Monel (optional)
• Process Connections:
  • Flanged
  • Threaded
  • Remote diaphragm seals
• Housing:
  • Aluminum or Stainless Steel
  • IP66/67 and NEMA 4X rated

Key Advantages Over Capillary Systems

✔ No fill fluid
✔ No capillary-induced temperature errors
✔ Reduced installation complexity
✔ Faster response time
✔ Improved long-term stability
✔ Lower total cost of ownership

Applications

• Distillation columns
• Reactors
• Storage tanks
• Boilers
• Oil & gas separators
• Chemical processing vessels
• Refining units
• Power generation plants

Installation Features

• Electronic synchronization between sensors
• Remote mounting capability
• Reduced maintenance requirements
• Smart diagnostics

Compliance & Certifications

• SIL 2/3 capable (depending on configuration)
• IEC 61508 certified
• NAMUR NE43 compliant
• Hazardous area approved

Optional Features

• Advanced diagnostics
• Integrated LCD display
• Wireless connectivity
• Custom diaphragm seals
• Extended warranty options