Description
Woodward 8440-2050 Digital Liquid Level Controller
As an authorized Woodward distributor, Saulcontrol delivers precision control solutions for critical fluid management applications with comprehensive 1-year warranties and expert engineering support.
Technical Specifications
| Product Model | Woodward 8440-2050 |
| Manufacturer | Woodward, Inc. |
| Product Type | Digital Level Controller |
| Input Type | Dual-input (Capacitance, Float, Pressure) |
| Control Outputs | 2x Relay SPDT (10A @ 250V AC) |
| Analog Output | 4-20mA HART |
| Measurement Range | 0-20 m H₂O |
| Accuracy | ±0.1% FS |
| Display | Backlit LCD with dual display |
| Operating Voltage | 18-36V DC or 85-265V AC |
| Communication | Modbus RTU, HART 7 |
| Operating Temp | -40°C to +85°C |
| Enclosure | IP66/NEMA 4X |
Main Features and Advantages
The 8440-2050 delivers advanced liquid level management with dual-sensor input capability for redundant measurement. Featuring auto-calibration algorithms, it maintains ±0.1% accuracy across the operating temperature range and compensates for fluid density variations. The controller’s configurable relay outputs provide flexible pump control logic with settable deadbands and delay timers for optimal cycling.
Intuitive dual-display LCD shows both measured level and secondary process values simultaneously. Integrated HART 7 communication enables remote configuration and diagnostics without interrupting analog signaling. The robust IP66/NEMA 4X enclosure withstands harsh environments including washdown areas and chemical exposure. Advanced diagnostics include electrode fouling detection, sensor fault alerts, and predictive maintenance indicators based on historical pump cycling data.

8440-2088
Application Areas
Water and Wastewater: The 8440-2050 controls pump stations and lift stations with optimal cycling algorithms to prevent pump wear. Its chemical compatibility makes it suitable for corrosive fluid management in chemical dosing systems. In filtration plants, it monitors media levels in sand filters during backwash cycles.
Industrial Process: Oil refineries utilize this controller for interface detection in separator vessels. Chemical plants deploy it for reactor level control with multiple alarm setpoints for safety interlocking. Food processing facilities benefit from its CIP-compatible sensors and washdown-rated enclosure.
Related Products
8440-2075 – Extended range version (0-50m)
8440-1000 – Single input basic controller
8440-3050 – Explosion-proof ATEX certified version
PML3000 – Submersible pressure sensor package
CAP-200 – Capacitance probe for interface detection
RTD-880 – Level-to-pressure transducer
8440-COM – Communication gateway module
Installation and Maintenance
Installation Preparation: Mount the 8440-2050 using the integrated DIN rail clip or direct-panel mounting. For capacitance probes, ensure proper grounding per manufacturer specifications. Maintain minimum distance from power cables (≥1m) and use shielded cable for analog signals. Configure pump control logic using front-panel interface or 8440-COM communication module before startup.
Maintenance Suggestion: Perform annual sensor calibration verification using manual measurements. Clean sensor elements during process shutdowns with appropriate solvents. Monitor pump cycling statistics in the controller’s log to detect abnormal wear patterns. Replace after 5 years of continuous service in corrosive environments.
Product Support
Saulcontrol provides comprehensive 1-year warranty with calibration certification. Our process control specialists offer configuration assistance and troubleshooting. Documentation includes hazardous area installation guides and application templates. Contact us via WhatsApp for technical consultation or emergency replacement.
Contact Our Engineers:
WhatsApp: +86 180 5988 4797
Email: sales@saulcontrol.com
Phone: +86 181 5089 9970
Please contact Sunny sales@xiongbagk.cn for the best price.
➱ sales manager: Sunny
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➱ Skype/WeChat: 18059884797
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