Application Scope
Purpose: Used for continuous monitoring of nitrous oxide in ambient air quality, and can also be used for nitrous oxide gas measurement and trace analysis.
Applicable occasions: Mainly applied in low-concentration flue gas emission prevention, waste incineration, power plants, steel mills, and other occasions for ambient air monitoring.
Instrument Principle
The instrument adopts gas correlation infrared absorption method. The basic working principle is that N₂O has absorption characteristics for infrared radiation at a specific wavelength, and the absorption strength is related to the N₂O concentration. Detection method: Infrared light from the infrared light source sequentially passes through the N₂O and N₂ filters in the rotating wheel, then enters the optical cell through a narrow-band interference filter. When passing through the N₂O filter, infrared light is absorbed and cannot absorb N₂O in the sample gas in the optical cell, forming reference light intensity. When passing through the N₂ filter, infrared light is not absorbed and illuminates the sample gas in the optical cell. N₂O in the sample gas absorbs infrared radiation, forming measurement light that passes through the optical cell and reaches the infrared detector. Through the light intensity ratio of the two, the concentration of N₂O in the sample gas is calculated using the Lambert-Beer law.
Instrument Features
• Adopts 7-inch full-touch color screen, with monitoring values freely switchable between mg/m³, μg/m³, nmol/mol, μmol/mol, ppm, ppb.
• Chinese menu-style operation interface, simple operation.
• With automatic range switching function.
• Monitoring values can be displayed graphically, with free zooming of graphic curves.
• With automatic temperature and pressure compensation function.
• Adopts adaptive optimization algorithm to achieve optimal response time and signal-to-noise ratio.
• Supports remote calibration and remote diagnosis of internal working parameters.
• Massive historical data storage, one year of valid data, with query and output functions (one record every 5 minutes).
• With various parameter alarm functions.
• Correlation wheel made with special process for long-term use.
