Digital Ammonium Nitrogen Ion Sensor (RS-485, ISE) – GAOTek

Description Overview GAOTek’s Digital Ammonium Nitrogen Ion Sensor utilizes an integrated ion-selective electrode (ISE), pH reference, temperature sensor, and optional potassium compensation for stable NH₄-N measurement. Ideal for continuous monitoring, the sensor delivers digital RS-485 Modbus RTU output and optional 4–20 mA, integrating seamlessly into industrial systems. Built for harsh conditions with IP68 protection, DC power operation, and self-cleaning capability, it ensures low-maintenance performance. Tailored for OEM, the sensor supports custom configurations and is widely used in wastewater, aquaculture, and environmental control applications.   Features Integrated Multi-Sensor Design: Combines NH₄⁺ ISE, pH reference electrode, temperature sensor, and optional K⁺ compensation for enhanced measurement accuracy. Digital & Analog Outputs: Primary RS-485 Modbus RTU communication; optional 4–20 mA output for legacy systems. High Accuracy: NH₄⁺ accuracy of ±5 % or ±0.2 mg/L; temperature ±0.1 °C; pH ±0.1 pH. Wide Measurement Range: Captures concentrations from 0.1 to 1000 mg/L NH₄⁺-N with 0.01 mg/L resolution. Rapid Response: Stabilizes readings within 2 minutes. Robust Protection: Rated IP68 and NEMA6P for dust and water immersion resistance. Operating Conditions: Functions in 0–45 °C; storage range –15 to 50 °C. Power Source: DC 12 V supply; optional 4–20 mA load support up to 750 Ω. Extended Cable: Ships with 10 m cable; extendable to 100 m. Compact Form Factor: 55 mm diameter × 340 mm length; lightweight (<1 kg).   Applications Real-time NH₄⁺ monitoring in wastewater treatment, especially nitrification and aeration stages. Aqua-farming and environmental water quality control where digital integration is essential. Inline monitoring for industrial water processing, process automation, and compliance systems   Technical Specifications Measurement Range (NH₄-N) 0.1 – 1000 mg/L, resolution 0.01 mg/L Accuracy (NH₄-N) ±5 % or ±0.2 mg/L (whichever is greater) Optional K⁺ Compensation 0.5 – 1000 mg/L, ±5 % or ±0.2 mg/L accuracy Temperature Range 0 – 45 °C operational; –15 – 50 °C storage Temperature Accuracy ±0.1 °C pH Range & Accuracy pH: 5–10, resolution 0.01, accuracy ±0.1 pH Response Time ≤2 minutes to 90 % response Output Interface RS-485 Modbus RTU; optional 4–20 mA output (≤750 Ω load) Power Requirements DC 12 V Protection Rating IP68 / NEMA6P waterproof enclosure Physical Size 55 mm diameter × 340 mm length Cable Length Standard 10 m; extendable to 100 m Self-Cleaning Option Available on select models Weight Less than 1 kg Customization Support OEM branding, configuration, packaging available Compliance CE certification (typical)