Overview
The Rosemount 1151GP5E22B2 is an industry-standard gage pressure transmitter engineered for analog measurement and control in demanding industrial applications. Discontinued in 2011 after over 40 years of being the industry standard for pressure measurement, the 1151 remains one of the most popular transmitters in use today with over 8 million installations. This model produces a 4–20 mA linear output proportional to gage pressure from 0–1.865 bar (750 inH2O), making it suitable for integration into analog control loops and monitoring systems without smart electronics.
Key Features
- 4–20 mA Analog Output: Simple, noise-immune signal for long-distance transmission to controllers and recorders
- Gage Pressure Configuration: Measures relative pressure above atmospheric, ideal for tank, vessel, and system monitoring
- Proven Reliability: Known to offer long-term and reliable performance in legacy and retrofit applications
- Modular Design: Modular design allows interchangeable mechanical and electrical components, providing backward and forward compatibility
- Multiple Materials: Multiple wetted materials as well as alternative fill fluids ensure process compatibility
Technical Specifications
- Transmitter Type: Gage Pressure (GP)
- Measurement Range: 0–1.865 bar (0–750 inH2O)
- Output Signal: 4–20 mA DC, linear with input
- Output Code: E (Analog 4–20 mA)
- Wetted Materials: 316 SST flanges/adapters; 316L SST diaphragm
- Fill Fluid: Silicone
- Mounting Code: B2 (standard flange mount)
- Weight (without meter): 12 lb. (5.4 kg)
- Weight (with meter): 15 lb. (6.8 kg)
Typical Applications
- Tank and vessel gage pressure monitoring
- System air/process gas pressure indication
- Pump discharge and filter differential-to-gage pressure conversion
- Flow measurement integration (with appropriate orifice or venturi plate)
- Industrial automation and legacy control system retrofits
- Water treatment, chemical processing, and HVAC pressure sensing
Compatibility & Replacements
Compatible With
- Allen-Bradley CompactLogix, ControlLogix, PLC-5 analog input modules (4–20 mA)
- Siemens S7-200, S7-300, S7-1200 analog input cards
- Mitsubishi FX series and Q-series PLCs with analog input
- Omron CP-series and Programmable Logic Controllers with 4–20 mA inputs
- Schneider Electric Modicon M241, M251 with analog I/O modules
- Any industrial control system or data acquisition device with 4–20 mA signal input
- Pressure gauges, recorders, and analog instrumentation with 4–20 mA input loops
Replaces / Drop-In Replacement For
- Other 1151GP5E series gage pressure transmitters with 0–1.865 bar range and 4–20 mA output
- Rosemount 1151GP variants with equivalent range and analog output specification
- Note: Verify flange type, process connection, and mounting before substitution. Consult Emerson technical documentation or your system integrator for specific compatibility confirmation.
Works With
- 4–20 mA analog input loop networks (two-wire or three-wire)
- Any industrial protocol that accepts analog signal input (Modbus, EtherNet/IP, PROFINET via gateway devices)
- Pressure recording instruments and data loggers with mA input terminals
- Industrial automation software that accepts standardized 4–20 mA sensor data (RS-Logix, TIA Portal, GX Works, CX-Programmer)
