The Model FTUV-NH3 gas analyser is an ammonia gas monitoring system specifically designed for stack emission, motor exhaust and gas manufacturer.  

The measurement principle is based on the UV absorption spectrum of the ammonia gas (NH3) in the UV range.  
The periodic structure of the absorption bands coming from the different levels of rotational energy of the gas molecules is analysed by performing a Fourier Transform on the absorption spectrum with a high speed DSP (Digital Signal Processor).   

At the opposite of the FTIR approach where the Fourier transform needs moving optical components, the Fourier transform in the UV range is done by solid state optics and electronic circuits, which constitutes a more reliable solution for a lower cost. The selectivity of the analyser is guaranteed by the typical periodic structure of the analysed gas, different  
for any other gases.  

•  Based on UV Fourier Transform for high selectivity and stability       
•  Ultra-fast response time (<2 sec)    
•  50 Megaflop DSP for signal extraction    
•  No risk of interference with CO, CO2, H2O    
•  No converter, no maintenance    
•  10-years lamp lifetime   

Documentation

Brochure FTUV NH3