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FPI AQMS-500 sulfur dioxide (SO2) analyzer applies UV fluorescence technology with the photomultiplier tube (PMT) to measure SO2.

FPI AQMS-600 nitrogen oxides (NO-NO2–NOx) analyzer utilizes chemiluminescence technology indicated by US EPA as the federal reference method for monitoring multiple forms of nitrogen oxides.

Micro AQMS gives a macro indication in terms of trend analysis against stationary AQI analysis. The micro AQMS is to find out the pattern of spatial pollution distribution during a certain period. These data support AQI results at the standard station, and most importantly, It gives a macro idea on municipal management.

The BPM-200 measures ambient particulate by using well-applied beta ray attenuation technology. PM2.5 measurement can also be achieved by introducing the corresponding cyclone.

PMS-200A is a small flow automatic membrane changer sampler, which can be applied to continuous measuring of PM 2.5 and PM10. The PMS-200A system consists of a PM10 cutting head, a PM2.5 cutter, an atmospheric temperature detection unit, an automatic filter replacement unit, a flow control system, and a temperature control system.

The Compact system is the alternative solution against standard AQMS, it comes with integrated shelter consisting IPC, sampler, AC and all necessary accessories.Comparing to the regular station, the compact one covers all advantages but less land area with miniaturization instruments, which is more cost-effective. Being extendable for VOCs or other analyzers, this type of system will be typically installed at tunnel or traffic joints, which needs online monitoring.

Dust from construction, demolition, and traffic can cause a significant impact on local air quality, posing health problems. Hence, dust mitigation monitoring is required at most construction sites. CDMS-1000 is designed with light scattering technology for continuous real-time measurement of particulate concentration along with noise and meteorological parameters. This combination consists of a particle analyzer, camera, sound level meter, and GPRS module.

Sample gas passes through denuder, and soluble gas will be analyzed by ion chromatograph first; the aerosol will then be inflated and given into ion chromatography to analyze soluble aerosol.

AQMS-700 CAPS NO₂ analyzer is an atmospheric environment monitoring instrument based on the optical cavity attenuation phase shift technology (CAPS) which can directly measure the NO₂ concentration in the ambient air and is widely used in the online monitoring of the NO₂ content in the ambient air quality monitoring scene.

The analyzer is mainly composed of pre-processing module, resonant cavity module, flow control module, circuit module, etc., and will measure the gas concentration according to the phase difference between the beam in the reference cavity and the cavity with NO₂. The LED beam is modulated by high frequency signal and coupled into the optical cavity composed of high-reflection mirror. Then, beam is reflected repeatedly in the cavity and is absorbed by NO₂ in the cavity. The absorbed beam is collected by the detector after passing through the optical cavity and the optical filter. The detector converts the optical signal into electrical signal, then demodulates it by electrical heterodyne method, and finally obtains the signal with phase information.