Rosemounts Emerson Hart 3051 1151 2051 4-20ma Water Pressure Transmitter

Rosemounts Emerson Hart 3051 1151 2051 4-20ma Water Pressure Transmitter

Modular Pressure Transmitter Line

The 1151 series comprises multiple configurations—including 1151GP (gauge), 1151AP (absolute), 1151HP (high-pressure), 1151DP (differential), 1151DR (remote-seal differential), and 1151LT (liquid-level). Each shares the same rugged, dual-compartment housing and interchangeable mechanical/electronic modules

Performance Specs

• Reference Accuracy
• Smart versions (output Code S) achieve ±0.075% of span for mid-to-high ranges; analog versions vary between ±0.1–0.25% depending on span
• Long-Term Stability
• Installed drift is ±0.01% URL over 2 years with silicone fill; analog models hold ±0.1–0.2% over 6 months
• Rangeability: Wide turndown ratio of 50:1 enables flexible span settings
• Pressure Ratings:
• Measurement spans from 0–5 inH₂O up to 1 000 psid.
• Static/line pressure withstands up to 6 000 psi (±4 500 psi typical), with burst ratings hitting 10 000 psi

Environmental & Dynamic Capabilities

• Operating Temp Range: –40 °C to +70 °C; withstands –40 °C to +85 °C in storage.
• Temperature Effects: Smart types show ±0.2% URL zero drift per 56 °C; analog double that
• Response/Damping: Digital electronics with 0.2-second minimum time constant (adjustable via output codes S/E/G)

Materials & Fill

• Wetted diaphragms: 316L stainless steel standard; optional Hastelloy C, Monel, Tantalum for aggressive fluids
• Fill fluids: Silicone oil or inert gas to suit process conditions

Outputs & Diagnostics

• Versatile output codes:
• S: Smart HART 4–20 mA, configurable linear or square-root.
• E/G: Standard analog 4–20 mA or 10–50 mA.
• L/M: Low power analog (for loop-powered or barrier applications)
• Security and diagnostics:
• EEPROM-based calibration retention, failure-mode alarms (alarms drive output beyond limits), and configurable security lock for calibration

Application Fit

• Suited for demanding industrial roles: differential flow, high-pressure gas monitoring, remote-seal liquid levels.
• Proven for harsh environments: wide temp range, high humidity tolerance, rugged static/over-pressure design
• Modular design enabled easy upgrade paths to successors like the Rosemount 3051 series

Why It’s a Classic