Relative pressure transmitter Rosemount™ 4051S

absolutedifferential4-20 mA

Overview
The Rosemount™ 4051S pressure transmitter provides accurate differential, gauge and absolute pressure measurement and can be configured for flow or level applications. It combines a welded stainless SuperModule sensing platform, HART communications, Bluetooth® configuration and integrated diagnostics to support industrial process instrumentation requirements. Designed for long-term stability and hazardous-area operation, the 4051S includes two integral relay pressure switches for local protection and control.

Key features

• Measurement modes: differential, gauge and absolute; configurable for flow or level
• Output / protocol: 4-20 mA with HART®
• Bluetooth® connectivity for local configuration and safer maintenance
• Graphical backlit display for onsite readout (multi-language)
• All-welded hermetic stainless SuperModule for overpressure resistance and 0.025% span accuracy
• Integral dual relay pressure switches for local on/off protection and control
• Rangeability up to 800:1 to reduce model variants in stock
• Built-in proof testing and expanded diagnostics from field to control room
• Response time <50 ms
• SIL 2/3 certification available per IEC 61508 (3rd party)

Specifications

• Model: Rosemount™ 4051S
• Accuracy: 0.025% span
• Warranty & stability: 20 year limited warranty; 20 year stability
• Rangedown: up to 800:1
• Measurement ranges: differential up to 2000 psi (137.89 bar); gauge/absolute up to 10,000 psi (689.47 bar)
• Communication: 4-20 mA with HART®
• Response time / time constant: <50 ms

Materials & certifications

• Process-wetted materials: 316L stainless steel, Alloy C-276, Alloy 400, tantalum, gold-plated options
• Certifications/approvals: SIL 2/3 (IEC 61508 via independent 3rd party), NSF, NACE®, hazardous location approvals (see full spec)

Applications
4051S is suited to industrial process control, safety loops and asset protection where high accuracy, long-term stability and functional safety are required. Typical uses include pressure measurement, flow calculation and level monitoring in chemical, oil & gas, power and water treatment installations.