NO₃ nitrite Sensor & Controller

Advanced UV-absorption technology for high-precision, reagent-free nitrate monitoring and automated industrial process control.

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Application
  • Aquaculture
  • Crude
  • Drinking water
  • Harsh environment
  • High temperature
Category
  • Controller (Analog)
  • Controller (Digital)
  • Sensor(Analog)
  • Sensor(Digital )
Measuring Principle
  • 2-electrode
  • 4-electrode
  • Amperometric
  • Fluorescence
  • Inductive
Measuring Range
  • Cl 0.5ppm
  • Cl 100ppm
  • Cl 10ppm
  • Cl 200ppm
  • Cl 20ppm
Sensor Housing Material
  • ABS
  • Glass
  • Graphite
  • Graphite+ABS
  • Graphite+PPS
Sensor Operating Temp.
  • -30~80℃
  • 0~100℃
  • 0~135℃
  • 0~50℃
  • 0~80℃
Wiper Type
  • Built-in wiper
  • External wiper
  • No wiper

NO₃ nitrite Sensor & Controller

Get a customized nitrate solution for your project.

Join 500+ global water treatment plants—access expert engineering support and wholesale pricing today.

Next-generation UV sensing technology that redefines precision and eliminates routine maintenance.

Dual-beam optical system with internal turbidity compensation ensures laboratory-grade nitrate precision in raw sewage without reagents or consumable membranes.

Maintenance-free sacrificial electrode technology eliminates ion-membrane replacements and chemical refills, delivering drift-free nitrate data in ultra-low flow conditions.

Universal control platform designed for large-scale sensor integration.

Seamlessly manage up to 20 sensors simultaneously with a single MCC controller, reducing system footprint and simplifying complex multi-parameter data integration.

Industrial-grade EMC protection and IP66-rated housing ensure zero-latency control and data integrity even in high-interference electromagnetic environments.

Proven Global Performance in Extreme Environments

About NO₃ Nitrite

Nitrate measurement via UV-Vis spectrophotometry leverages the absorption of light at 210 nm, where NO₃⁻ ions capture photons to transition between energy levels, allowing for reagent-free online monitoring. This process follows the Beer-Lambert Law, quantifying concentration by measuring the light attenuation (absorbance) as the beam passes through a fixed optical path length (L) of the water sample. To eliminate inaccuracies, a 275nm reference beam filters out the "background noise" from dissolved organic matter (DOM) and suspended solids, ensuring high-precision data in real-time.

Accurate nitrate monitoring is a cornerstone of global water security, essential for preventing eutrophication and protecting fragile aquatic ecosystems from industrial nitrogen excess. By enabling precise nutrient management, we empower industries to drastically reduce their environmental footprint and align with international sustainability goals for a carbon-neutral future. Effective stewardship of our water resources today ensures a resilient and greener planet for generations to come.

Frequently Asked Questions

Got technical questions? Get instant expert support and a tailored quote for your nitrate monitoring needs today.

1. How is nitrate concentration measured in water online?
Online nitrate concentration is most accurately measured via UV-Vis spectrophotometry, which quantifies NO₃⁻ ions by their specific light absorption at 210 nm using the Beer-Lambert Law for real-time, reagent-free analysis.
2. What is the difference between an ion-selective electrode (ISE) and a UV nitrate sensor?
Unlike ISE sensors that require frequent calibration and suffer from chloride interference, UV nitrate sensors provide superior long-term stability and higher precision by using optical absorption peaks without any chemical consumables.
3. How does turbidity affect UV nitrate measurement accuracy?
Turbidity and suspended solids can scatter light and cause false high readings, which is why professional sensors utilize a secondary reference wavelength (typically 275nm) to automatically compensate for background interference.
4. Why is nitrate monitoring critical in municipal wastewater treatment?
Precision nitrate monitoring is essential for optimizing the denitrification process and controlling carbon source dosing, ensuring total nitrogen (TN) compliance while significantly reducing operational chemical costs.
5. Does organic matter (DOM/COD) interfere with nitrate sensors?
Yes, dissolved organic matter can absorb UV light at similar wavelengths, but advanced spectral sensors eliminate this "background noise" through dual-beam compensation or multi-wavelength algorithms to ensure data integrity.
6. What is the typical maintenance requirement for an optical nitrate sensor?
Optical nitrate sensors are designed for low maintenance, typically requiring only periodic inspection of the self-cleaning wiper and annual verification against laboratory standard samples to maintain high measurement reliability.
7. How does temperature impact nitrate sensor readings?
While nitrate ions are relatively stable, extreme temperatures can cause electronic drift or light source fluctuations, necessitating industrial-grade sensors with built-in temperature compensation to ensure accuracy in harsh climates.
8. Can UV nitrate sensors measure nitrite (NO₂⁻) levels as well?
Standard UV sensors focus on NO₃⁻ at 210 nm, but advanced full-spectrum UV-Vis sensors can distinguish between nitrate and nitrite by analyzing the unique absorption fingerprints across the broader ultraviolet spectrum.