DK ABG 301 series airborne trace multi gas analyzer

overview

The DK ABG 301 series airborne trace multi gas analyzer is based on quartz enhanced photoacoustic spectroscopy technology (QEPAS), which has the characteristics of high accuracy, small size, light weight, strong maneuverability, easy operation, can enter complex environments for work, and can be carried out on drones or mobile vehicles. It can break through the limitations of time and space for blind spot monitoring, improving the efficiency of environmental inspections. Capable of providing information on polluted gases (CH) within application scenarios such as urban areas, wetlands, landfills, and seaports with extremely high precision and excellent spatial resolution₄、 CO、CO₂、 N₂O、NO_x、 SO₂、 NH₃Real time concentration information of (etc.).

Product Features

Based on quartz enhanced photoacoustic spectroscopy (QEPAS) technology, the sensor system structure mainly includes four parts: wavelength modulation module, laser source emission module, acoustic signal detection module, and second harmonic detection module. Using a QCL laser (customizable) as the light source, a high-frequency sine wave modulation signal is superimposed with a low-frequency sawtooth wave scanning signal to tune the center wavelength of the laser. The light emitted by the laser enters the detection module and is adjusted to pass between the two strands of the tuning fork. Then, the piezoelectric signal generated is amplified by a transimpedance amplification circuit and sent to a lock-in amplifier for demodulation, and finally processed and analyzed by the program.