Description
Foxboro 871EC-LB0-V
Technical Specifications
- Product Type: Electrodeless Conductivity Sensor.
- Cell Constant: 0.873 cm⁻¹.
- Measurement Range: Optimized for low conductivity ranges.
- Process Connection: Standard industrial threaded or flanged options.
Functional Features
- Fouling Resistance: The toroidal design eliminates direct metal-to-fluid contact, preventing coating and scaling issues.
- Chemical Compatibility: Ideal for low concentrations (<5%) of inorganic acids, alkalis, and salts.
- Temperature Tolerance: Suitable for continuous operation in standard industrial temperature ranges.
- Maintenance-Free: Requires significantly less maintenance compared to contact-type sensors.
Application Scenarios
Widely used in chemical processing, water treatment, and power generation for monitoring low-conductivity streams, rinse water, and dilute chemical solutions.
Performance Parameters
- Accuracy: High precision for low-range measurements.
- Response Time: Fast response to changes in process conductivity.
- Operating Temperature: Rated for standard industrial process temperatures.
Material Composition
The sensor body is constructed from rugged, chemically resistant materials such as PEEK (Polyether ether ketone) or specialized polymers. The internal toroid is encapsulated to prevent moisture ingress.
Structural Characteristics
Features a donut-shaped (toroidal) sensing element encased in a protective, streamlined housing. The design ensures that the process fluid flows smoothly through the center of the toroid without creating dead zones.
Working Principle
The sensor operates on the principle of electromagnetic induction. A drive coil induces a voltage in the fluid passing through the toroid, creating a current loop. A sense coil measures the strength of this current, which is directly proportional to the conductivity of the fluid.
Installation Requirements
Install in a full pipe to ensure the sensing area is completely submerged. Avoid installing in areas where air bubbles can be trapped in the toroid. Ensure proper grounding of the process fluid if necessary.
Usage Precautions
- Do not use in high-conductivity applications as it will saturate.
- Avoid mechanical shock during installation.
- Verify chemical compatibility with the wetted materials before deployment.
