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The multi axis differential absorption spectrometer uses passive differential absorption spectroscopy (DOAS) method to invert the concentration of the measured gas in the atmosphere by utilizing the absorption intensity of various trace gases' "fingerprint" characteristics of solar scattered light. Remote sensing of point and surface pollution sources to obtain the volume concentration of pollutant gases. The system does not require any statistical data, is easy to operate, fast and accurate, and has low operating costs. To provide reliable data basis for environmental protection departments to grasp the real environmental conditions, formulate reasonable and feasible emission reduction plans.

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Quickly scan the plume profile using scattered sunlight as a light source to obtain the density of the emitted plume profile.

SO₂、 NO₂Simultaneously detecting multiple pollutants.

Optional on-board scanning platform can be equipped to obtain the net emission flux of pollutants in the area.

High sensitivity, large monitoring coverage space, not affected by H in the air₂O、CO₂Interference with particulate matter.

The cross-border transport and flow of atmospheric pollutants between monitored areas.

Multi axis and multi angle monitoring from near ground to vertical direction can obtain richer and more accurate information on the composition of atmospheric chemical pollutants.‍

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‍‍Measurement component: NO in the atmosphere₂、 SO₂Vertical column concentration

‍‍Integral time: ≤ 2s

Complete scanning time: 5 minutes (adjustable)

Spectral range: 290-400nm

Digital output: USB, RS485 interface, data, status, and control functions‍‍‍‍

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