Place of Origin:
Germany
Brand Name:
Rosemount
Model Number:
4051
Rosemount 4051 Pressure Transmitter – Product Introduction
The Rosemount 4051 (especially the 4051S model) is a high-performance pressure transmitter developed by Emerson for precise measurement of pressure, differential pressure, level, and flow in demanding industrial applications.
Building on the proven reliability of the Rosemount 3051 series, the 4051 offers improved accuracy, long-term stability, advanced diagnostics, and smart digital communication options.
Key Features and Benefits
Typical Applications
| 
 Item  | 
 Description  | 
| 
 Model  | 
 Rosemount 4051 / 4051S Smart Pressure Transmitter  | 
| 
 Manufacturer  | 
 Emerson (Rosemount Measurement Division)  | 
| 
 Measurement Types  | 
 Differential Pressure (DP), Gauge Pressure, Absolute Pressure, Level, and Flow  | 
| 
 Technology  | 
 Capacitive sensor with microprocessor-based electronics  | 
| 
 Output Signal  | 
 4–20 mA DC with HART®, optional FOUNDATION Fieldbus or Profibus PA  | 
| 
 Accuracy  | 
 Up to ±0.025 % of span (reference accuracy)  | 
| 
 Stability  | 
 ±0.025 % of URL for 20 years  | 
| 
 Response Time  | 
 < 50 ms  | 
| 
 Rangeability (Rangedown)  | 
 Up to 800 : 1  | 
| 
 Process Temperature Range  | 
 –40 °C to +120 °C (standard); higher with remote seals  | 
| 
 Ambient Temperature Range  | 
 –40 °C to +85 °C (electronics housing)  | 
| 
 Power Supply  | 
 10.5–42.4 V DC (depends on protocol)  | 
| 
 Process Connection  | 
 1/4 in – 18 NPT, 1/2 in – 14 NPT, or flange-mounted options  | 
| 
 Wetted Materials  | 
 316L SS, Hastelloy C-276, Alloy 400, Tantalum, Gold-plated SS  | 
| 
 Housing Material  | 
 Aluminum or 316 Stainless Steel, epoxy-coated  | 
| 
 Display  | 
 Optional LCD with local zero/span buttons  | 
| 
 Communication Options  | 
 HART®, FOUNDATION Fieldbus, Profibus PA, Bluetooth®  | 
| 
 Diagnostics  | 
 Plugged Impulse Line detection, Loop Integrity, Process Alerts  | 
| 
 Enclosure Rating  | 
 IP66 / IP68, NEMA 4X  | 
| 
 Safety Certification  | 
 SIL 2 / SIL 3 (IEC 61508)  | 
| 
 Explosion Protection  | 
 ATEX, IECEx, FM, CSA approvals available  | 
| 
 Weight  | 
 Approx. 3.5 – 4.0 kg (depends on configuration)  | 
Summary
The Rosemount 4051S Pressure Transmitter delivers unmatched performance with best-in-class accuracy, long-term stability, and advanced diagnostics. Designed for safety and reliability, it supports multiple communication protocols, Bluetooth® connectivity, and SIL certification—making it a smart, future-ready solution for any critical pressure measurement application.
 
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