Online Bod Analyser Online COD BOD Analyzer Wholesale - BOQU

Product Overview

Note: the detailed product description you provided refers to BOQU’s NNA-210 Online Nitrate Nitrogen Analyzer (NO3?N) rather than a BOD/COD analyzer. Below is a concise five?point summary based on that detailed introduction.

Product Features

1) Product overview

Product Value

- The BOQU NNA-210 is an online nitrate?nitrogen (NO3?N) analyzer that measures nitrate concentration continuously by UV absorbance at 210 nm. It is designed for direct in?line measurement without sampling or chemical reagents and is built from corrosion?resistant materials for use in fresh and seawater.

Product Advantages

2) Product features

Application Scenarios

- Measuring principle: UV absorption at 210 nm.

- Measuring range: NO3?N 0.1–50.0 mg/L (with 2 mm optical path).

- Performance: accuracy ±5%, repeatability ±2%, resolution 0.01 mg/L.

- Hardware: sensor body SUS316L (freshwater) or titanium alloy (seawater); transmitter IP65, sensor IP68.

- I/O and power: 2 × 4–20 mA outputs, RS485 Modbus RTU, 3 relays; AC 85–500 VAC or DC 9–36 V; standard 10 m cable (extendable to 100 m).

- Additional features: automatic cleaning, polarity?reverse protection, optional wireless data module, short response time, continuous online measurement, no reagents or sample pre?treatment.

3) Product value

- Provides reliable, real?time nitrate monitoring for process control and regulatory compliance.

- Eliminates reagent costs and secondary pollution associated with wet chemistry methods.

- Reduces sampling labor and downtime by delivering continuous in?line data for faster operational decisions (e.g., aeration and denitrification control).

- Durable design and low maintenance lower total cost of ownership over time.

4) Product advantages

- Direct in?line measurement with fast response and high repeatability.

- Robust construction (SUS316L / titanium) and high ingress protection for harsh environments, including seawater.

- Wide power input range and multiple communication/output options enable flexible integration into existing control systems.

- Built?in automatic cleaning and reverse?polarity protection reduce maintenance needs and risk of damage.

- Optional wireless telemetry and extendable cable length support remote or distributed installations.

5) Application scenarios

- Drinking water and surface water quality monitoring.

- Industrial process water monitoring (e.g., chemical, food & beverage, cooling systems).

- Municipal and industrial wastewater treatment plants for continuous nitrate control (monitoring aeration tanks and denitrification processes).

- Environmental monitoring where continuous, reagent?free nitrate measurement is required, including coastal and seawater applications.