FTIR Gas Analyzer
> Application
Waste incineration power plant, ultra-low emission monitoring, solid waste treatment plant, marine exhaust emission
> Technical principle
Infrared light passes through an aperture first, then through the filter into the interferometer, forms the interference spectrum, and then couple into the absorption pool. Light with multiple reflection in the absorption pool, transmission light focuses to MCT photoelectric detector through the optical lens. After detected signal of electric detector passes through preamplifier and main amplifier, interference figure will be amplified, filtered, digitized. Digital signal is further processed, the interference figure transform into single channel spectrogram. There is absorption of each gases in the specific location, and the information of each gas concentration value can be inversed by analyzing the channel spectrogram.
> Specification
|
Gas |
Range |
|
SO2 |
0~75 mg/m3 |
|
NO |
0~200 mg/m3 |
|
NO2 |
0~40 mg/m3 |
|
NOx |
0~200 mg/m3 |
|
CH4 |
0~20 mg/m3 |
|
NH3 |
0~10 mg/m3 |
|
HCl |
0~15 mg/m3 |
|
HF |
0~10 mg/m3 |
|
CO |
0~75 mg/m3 |
|
CO2 |
0~20% |
|
H2O |
0~40% |
|
O2 |
0~25% |
|
Zero drift |
≤±2%F.S./7d |
|
Span drift |
≤±2%F.S./7d |
|
Linearity error |
≤±2%F.S. |
> Feature
1. Measuring SO2, NOx(NO, NO4), CH4, NH3, HCl, HF, CO, CO2, O2, H2O, and other components at the same time, and can extend to measure other components such as SO3, N2O, etc.
2. The entire high temperature heating to prevent component loss of gas pollutant compositions from condensation
3. A white cavity design, high signal-to-noise ratio, measuring optical path up to 13m, low detection limit, high range dynamics, meet the requirements of ultra-low emission monitoring
4. Using the least squares method and the PLS algorithm, selecting the appropriate wavelength range, can effectively eliminate the interference of H2O and other components
5. Interior cavity mirror of gas cell is plated with gold, high reflectivity. Protect gas purging, long maintenance intervals
