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400-050-3910

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NO₂ Gas Analyzer

NO₂ Gas Analyzer

Product Description

Currently, the vast majority of nitrogen oxide measuring instruments on the market determine the concentration of nitrogen dioxide (NO₂) or total nitrogen oxides (NOₓ) by first converting NO₂ in the total NOₓ (NO+NO₂) into NO. However, due to the NO₂/NO conversion efficiency (which depends on the actual NO₂ concentration), some field conditions are not suitable for using a nitrogen oxide converter for NO₂-to-NO conversion. To address this issue, Shandong SINZEN Instrument Co., Ltd. has developed the SUV-100 flue gas analyzer, which employs a direct NO₂ measurement method for pollutant measurement.

The analyzer is based on ultraviolet absorption spectroscopy and chemometric algorithms. It can measure the concentrations of gases such as SO₂, NO, NO₂, and O₂. Featuring high measurement accuracy, high reliability, fast response time, and wide applicability, it can be widely used in environmental online monitoring, industrial control, safety monitoring, and other applications.

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  • Model

    SUV-100

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Technical Specifications

  1. Analytical method: SO₂/NOₓ by UV-DOAS (direct measurement of NO and NO₂), O₂ by electrochemical method.
  2. SO₂ measurement range (mg/m³): 0–200 (customizable).
  3. NOₓ measurement range (mg/m³): 0–200 (customizable).
  4. O₂ measurement range: 0–25%.
  5. Repeatability: ≤ ±1% F.S.
  6. Zero drift: ≤ 2% F.S./week.
  7. Span drift: ≤ 2% F.S./week.
  8. Linearity error: ≤ ±2% F.S.
  9. Indication error: ≤ ±2% F.S.
  10. Power supply: 220 VAC ±10%, 300 W.
  11. Instrument air requirement: (0.6–0.8) MPa, oil-free and dry.
  12. 4–20 mA input channels: 2 channels, configurable, 100 Ω load.
  13. 4–20 mA output channels: 4 channels, configurable content, maximum load capacity < 800 Ω.
  14. Digital input channels: 4 channels, configurable.
  15. Relay output channels: 8 channels, configurable content, DC 24 V.
  16. Communication interfaces: 1 x RS-232, 1 x RS-485 (supports Modbus protocol).
  17. The system is available for OEM.

Technical Advantages

  1. The light source uses a pulsed xenon lamp with a lifespan of 10⁹ pulses. Calculated at 3 pulses per second, the service life reaches 10 years. As a cold light source, the pulsed xenon lamp offers long life, good stability, and no warm-up time compared to infrared light sources.
  2. The DOAS (Differential Optical Absorption Spectroscopy) algorithm is adopted, which represents an advanced online analysis method for SO₂, NOₓ, and other gases, with a detection lower limit reaching 1 ppm.
  3. The analyzer’s gas cell is made of stainless steel, requiring no internal mirror polishing or gold plating. The gas cell is robust, low-cost, and less affected by moisture and dust.
  4. By analyzing the continuous spectrum, the concentrations of multiple gas chemical components can be measured simultaneously, offering high integration and cost-effectiveness.
  5. Equipped with multiple high-performance processors that communicate via a high-speed data bus, each module features powerful digital configuration and monitoring capabilities. The touchscreen human-machine interface is simple to operate and user-friendly.

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