Key Parameters & Specifications Model Series: 1151 (Rosemount Alphaline) Type: Differential Pressure Transmitter Model Designation: 1151DP (Differential Pressure variant) Housing Code: 089U (Specific housing configuration with options) Diaphragm Material: B (Typically 316L Stainless Steel) Fill Fluid: A (Silicone Oil - standard industrial application fill) Process Connection: R (Standard ¼-18 NPT or equivalent) Housing Material: A (Epoxy-coated cast aluminum, standard) Electrical Connection: A (½-14 NPT conduit entry with screw terminals) Output Signal: 4-20 mA DC (two-wire) Key Features Differential Pressure Measurement: Measures pressure difference between two points 316L Stainless Steel Wetted Parts: Good corrosion resistance for general-purpose applications Standard Fill Fluid: Silicone oil for general-purpose temperature ranges Specifications Details Parameter Value Output 4-20 mA DC Power Supply 12-45 V DC Accuracy Typically ±0.1% to ±0.2% of span Stability ±0.2% of URL for 12 months Temperature Limits -40°F to 250°F (-40°C to 121°C) with silicone fill Static Pressure Limit Up to 2000 psi (138 bar) typical Turn-on Time 2.3 seconds maximum Response Time 0.2 seconds typical Simplified Configuration: Streamlined model for common applications Standard Process Connection: Compatible with common manifold systems Typical Applications Flow measurement with orifice plates Level measurement in closed tanks Filter monitoring Pump protection General industrial pressure monitoring