Overview
Enviro Testers’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) |
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