Rosemount 1151 Differential Pressure Transmitter 1151DP 1151AP 1151GP 1151HP

Rosemount 1151 Differential Pressure Transmitter 1151DP 1151AP 1151GP 1151HP

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