Water Quality Sensor: Multi-Parameter Online Water Quality Monitoring of pH, Temperature, Dissolved Oxygen, Electrical Conductivity, Ammonia Nitrogen and Turbid
Industrial Wastewater, Surface Water, River Channe
Output
Customizable
Cable
Standard Configuration: 5 Meters (Customizable)
Transport Package
Customizable
Trademark
Chao Da
Origin
Jiangsu, China
Product Description
Water Quality Analyzer Electrodes: Technical Overview
1.pH Electrodes
Core Structure: Composed of a low-impedance glass membrane (e.g., GFT EST-701Y) and an Ag/AgCl reference system with gel electrolyte, ensuring stable potential and anti-pollution performance
Features:
Wide measurement range (0-14 pH) with linear response.
Suitable for harsh environments, including wastewater and high-temperature applications (e.g., -5°C to 135°C).
Requires regular calibration with standard buffer solutions (e.g., pH 4.01, 7.00) for accuracy
2.Dissolved Oxygen (DO) Electrodes
Design: Utilizes Clark-type membrane technology or optical sensors (e.g., SWAN A-87 series), often integrated with automatic temperature compensation (ATC) for real-time monitoring
Applications:
Ideal for aquaculture, environmental monitoring, and industrial water systems.
Maintenance involves periodic membrane replacement and calibration with zero-oxygen solutions (e.g., sodium sulfite)
3.Conductivity Electrodes
Configuration: Features multi-ring (e.g., 4-ring) or graphite sensors with epoxy resin bodies for wide-range measurement (0-2000 μS/cm to 20,000 μS/cm)
Key Parameters:
Temperature compensation (NTC10K/PT1000) ensures accuracy across varying conditions.
Used in pure water systems, boiler water, and chemical processes
4.Ion-Selective Electrodes (ISE)
Function: Measures specific ions using ion-sensitive membranes. Examples include calcium hardness electrodes (Bsens740) for industrial water monitoring
Advantages:
Direct measurement without reagents; minimal maintenance.
Calibration requires standard ion solutions (e.g., 0.1M HCl for electrode reactivation)
5.ORP (Oxidation-Reduction Potential) Electrodes
Structure: Platinum or gold sensing elements with a double-junction reference system to prevent contamination
Usage: Critical in disinfection (e.g., chlorine monitoring) and redox reaction analysis.
6.Multi-Parameter Electrodes
Integration: Combines pH, DO, conductivity, and ion sensors (e.g., ThermoFisher Eutech PCD650) for comprehensive analysis
Features:
Waterproof housing (IP65/IP67) for field use.
Supports RS485/Modbus communication for data logging and remote control.
Maintenance Guidelines:
Calibration: Use certified standards (e.g., NIST-traceable solutions) and follow manufacturer protocols.
Cleaning: Remove contaminants with deionized water or specific solvents (e.g., 4% HF for glass membrane scaling)
Storage: Keep electrodes hydrated (e.g., in 3M KCl for pH electrodes) to prolong lifespan
For detailed specifications, refer to technical manuals from brands like SWAN6, GreenPrima, or HANNA
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