Overview
The Rosemount Analytical 400-11 Endurance Contacting Conductivity Sensor is an industrial-grade measurement instrument for electrolytic conductivity in clean, non-corrosive liquids. This model features a 0.01/cm cell constant and integral cable connection, enabling direct screw-in installation into process piping via a 3/4-inch MNPT fitting. Factory-measured calibration ensures accurate measurements with no initial setup required—reducing commissioning time and operational risk.
Key Features
- Pre-calibrated cell constant (0.01/cm) eliminates need for field calibration at startup
- Screw-in design with 3/4-inch MNPT process connection for direct pipeline integration
- Measures conductivity up to 20,000 µS/cm in clean water applications
- Compatible with Emerson/Rosemount analyzer transmitters (models 56, 1056, 1057, 1066, 5081, and legacy models)
- Optional sidestream installation via pipe tee or flow cell configuration
- Integral cable connection for simplified wiring
Technical Specifications
| Model Number | 400-11 |
| Sensor Type | Contacting Conductivity (ENDURANCE) |
| Cell Constant | 0.01/cm |
| Measurement Range | Up to 20,000 µS/cm |
| Process Connection | 3/4-inch MNPT screw-in fitting |
| Cable Configuration | Integral cable (standard 10 ft; 50 ft optional) |
| Calibration | Factory-measured; no field calibration required |
| Installation Method | Direct screw-in, pipe tee, or flow cell (sidestream) |
| Manufacturer | Rosemount Analytical (Emerson) |
| Compatible Transmitters | Models 56, 1056, 1057, 1066, 5081, 1055, 54C, 54eC, 4081C, 6081-C, XMT-C |
Typical Applications
- Power Generation: Cooling tower water quality monitoring
- Water Treatment: Boiler feed water and condensate analysis
- Semiconductor & Pharmaceutical: High-purity water systems (ultra-pure, deionized)
- HVAC Systems: Chilled water and heating loop conductivity control
- Industrial Process Control: Reverse osmosis (RO) permeate and reject stream monitoring
- Environmental Monitoring: Wastewater and effluent conductivity verification
Compatibility & Replacements
Compatible With
- Rosemount Analytical transmitter model 56
- Rosemount Analytical transmitter model 1056
- Rosemount Analytical transmitter model 1057
- Rosemount Analytical transmitter model 1066
- Rosemount Analytical transmitter model 5081
- Legacy transmitter models 1055, 54C, 54eC, 4081C, 6081-C, XMT-C
- Any standard Emerson/Rosemount conductivity analyzer with integral cable input
- Pipe tee and flow cell installations (PN 24091-02)
Replaces / Drop-In Replacement For
- Previous Rosemount 400 models with 0.01/cm cell constant
- Equivalent general-purpose screw-in conductivity sensors in legacy systems
- Verify compatibility with your system integrator before ordering for custom legacy equipment
Works With
- Emerson DeltaV control systems (via Rosemount transmitter interface)
- SCADA systems with 4–20 mA transmitter input cards
- Modbus and Profibus networks (through compatible transmitter modules)
- Standard industrial process water monitoring infrastructure
