1. Operation Method

• Quick Deployment: Pre-configured before delivery. Just install the sensor (submersible or pipeline type), connect the waterproof cable and LoRa gateway for automatic networking, no complicated wiring required.
• Flexible Configuration: Supports local serial port tools and remote downlink commands. Sampling frequency, alarm thresholds and working modes can be adjusted anytime to meet different monitoring demands.
• Data Reading: Monitoring data is uploaded automatically to cloud or local server via LoRa. Real-time data, historical curves and alarms can be viewed on mobile or computer, realizing unattended monitoring.
• Low-Power Operation: With intelligent power management and solar-battery power supply, the sensor can run continuously all year round without external power, especially suitable for remote areas.

2. Working Principle

• Measurement Principle: Adopts Ion Selective Electrode (ISE) method. The sensitive membrane responds selectively to ammonium ions and generates a potential signal proportional to ammonia nitrogen concentration. The value is calculated after high-precision signal processing.
• Automatic Compensation: Built-in temperature sensor enables real-time temperature compensation based on Nernst equation, eliminating temperature influence and ensuring data reliability.
• Anti-Interference Design: Equipped with anti-fouling coating and self-cleaning structure to reduce microbial and sediment interference. Electromagnetic shielding ensures stable signal output.

3. Precautions

• Installation: Install in well-flowing water to avoid stagnant water and bubbles. Secure cables to prevent damage from water impact.
• Calibration: Calibrate zero point and high point with standard solution every 1–3 months. Shorten calibration cycle if water quality fluctuates sharply or electrode works abnormally.
• Maintenance: Clean the electrode gently with soft brush regularly. Keep it dry after cleaning when not in use for a long time.
• Environment: Do not use in strong acid/alkali, high-concentration organic solvents or environments over 50℃. Dilute high-salinity samples to reduce ion interference if necessary.