Online COD BOD Analyzer Online Nitrogen Analyzer Top Brand

Product Overview

1) Product overview

Product Features

- Model: BOQU NNA-210 Online Nitrate (Nitrogen) Analyzer — an optical UV spectrometer-based online nitrate (NO3–N) meter for continuous, in-line monitoring.

Product Value

- Measuring principle: nitrate absorbs UV light at 210 nm; the sensor measures absorption through a flow slit and calculates NO3–N concentration in real time.

Product Advantages

- Key specs (summary): range 0.1–50.0 mg/L NO3–N; accuracy ±5%; repeatability ±2%; resolution 0.01 mg/L; pressure ≤0.4 MPa; working temperature -15 to 60 °C. Materials: SUS316L (freshwater) or titanium alloy (seawater). Transmitter IP65, sensor IP68.

Application Scenarios

2) Product features

- Direct in-situ measurement (no sampling or chemical pre-treatment).

- Reagent-free operation — eliminates secondary pollution and chemical handling.

- Continuous, fast-response monitoring suitable for real-time control.

- Automatic sensor cleaning to reduce maintenance frequency.

- Robust communications and outputs: 2 × 4–20 mA, RS485 Modbus RTU, 3 relay outputs; optional wireless data module.

- Wide power compatibility: AC 85–500 VAC or DC 9–36 VDC; built-in reverse polarity protection.

- Standard 10 m cable (extendable up to 100 m) and seawater-capable sensor option.

3) Product value

- Enables real-time control and optimization of biological nitrogen removal processes (e.g., aeration/denitrification), improving treatment efficiency and reducing operating costs.

- Reduces labor and consumable costs by eliminating reagents and frequent sampling.

- Lowers environmental and health risks by avoiding chemical use and secondary pollution.

- Supports regulatory compliance and early detection of nitrate excursions in drinking or process waters.

- Scalable and reliable solution for continuous monitoring, delivering economic effectiveness for utilities and industry.

4) Product advantages

- Proven UV absorption technology packaged in an original, user-friendly design with industrial-grade components.

- High market acceptance and reputation through BOQU’s customer base and support network.

- Durable construction and IP protection for harsh field conditions; titanium option for marine environments.

- Flexible integration: multiple analog/digital outputs, relays, long cable runs, and optional wireless telemetry.

- Low maintenance thanks to automatic cleaning and reagent-free operation, plus protection features like reverse-polarity safeguarding.

5) Application scenarios

- Drinking water and surface water nitrate monitoring and control.

- Industrial process water monitoring where nitrate levels must be tracked (manufacturing, cooling, etc.).

- Municipal and industrial wastewater treatment plants — continuous monitoring of aeration tanks and denitrification stages.

- Environmental monitoring in freshwater and marine/coastal sites (use titanium sensor for seawater).

- Any application requiring continuous, in-line nitrate monitoring for process control, compliance, or early-warning detection.