BUHLER Technologies A broad range of applications like boiler trim, emission monitoring, ammonia slip monitoring, combustion efficiency, LEL warning indication or inner atmosphere control require analyzers with different measuring principles. Bühler offers optical, paramagnetic and zirconium technologies as well as tuned diode laser (TDL) gas analyzers.

http://www.buhler-technologies.com/gas_analysis/products/analysers/index.html?L=1