EC-120 High Conductivity Digital Probe
Digital high-range EC sensor (10 µS/cm - 500 mS/cm, K=0.45) with four-graphite electrodes. RS485 for seawater and brine.
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Product Highlights
View all in Specifications tabOverview
The EC-120 is a specialized digital conductivity electrode featuring four-graphite sensor technology designed for measuring electrical conductivity (EC) in a wide range of water applications. Available with selectable cell constants (K=0.1, K=1.0, K=10.0), this probe covers measurements from 0.2 µS/cm to 100 mS/cm, making it well suited for industrial processes, saline waters, and high-conductivity environments.
Key Features
- Digital Technology: Superior accuracy and stability with built-in digital processing
- Four-Graphite Electrode: Enhanced electrode design for high conductivity measurements
- Wide Measurement Range: 0.2 µS/cm to 100 mS/cm (varies by K value)
- Selectable Cell Constant: K=0.1, K=1.0, or K=10.0 to match your application
- Digital Output: RS485 Modbus RTU for seamless integration with SCADA and IoT systems
- Automatic Temperature Compensation: Integrated sensor ensures accurate readings across 0-60°C
- Direct Connection: Connect directly to computer or PLC without additional instrumentation
- High Protection: IP68 waterproof rating ensures reliable operation
Applications
- High salinity water monitoring
- Seawater desalination processes
- Brine concentration monitoring
- Industrial wastewater with high TDS
- Chemical process streams
- Salt production facilities
- High-strength industrial effluents
- Mining industry water treatment
- Oil and gas produced water
Technical Specifications
The EC-120 delivers precise conductivity measurements with ±1.0% F.S. accuracy and automatic temperature compensation across 0-60°C. The four-graphite electrode design with selectable cell constants provides optimal sensitivity across the full measurement range while maintaining excellent long-term stability.
Digital signal processing eliminates noise and interference, providing stable and reliable measurements even in electrically noisy industrial environments with high ionic concentrations.
Connectivity and Integration
With its RS485 Modbus RTU interface, the EC-120 seamlessly integrates into modern SCADA systems, IoT networks, and industrial automation platforms.
The probe operates on 7-24V DC power supply, making it compatible with standard industrial power systems.
Understanding Cell Constant
The EC-120 supports three selectable cell constants to match your application:
- K=0.1 (0.2-200 µS/cm): Ultra-pure water, deionized water, boiler condensate
- K=1.0 (2-10,000 µS/cm): General process water, brackish water, aquaculture
- K=10.0 (20-100,000 µS/cm): Seawater, brine, high-strength industrial effluents, mining water
Installation Notes
The robust design allows for easy installation in tanks, pipes, and process equipment handling high conductivity fluids. The 4-wire terminal connection ensures secure signal transmission and reliable operation. The four-graphite electrode configuration provides excellent chemical resistance and extended service life in demanding applications.
Advantages of Digital Technology
- Superior noise immunity in electrically harsh environments
- Enhanced long-term stability and minimal calibration drift
- More accurate temperature compensation for high conductivity solutions
- Simplified installation with reduced wiring complexity
- Real-time diagnostics and status reporting
- Better repeatability and precision at high EC levels
Related Guide: How to Choose an EC Probe for Aquaculture & Hydroponics
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