Inkqubo yovavanyo lwe-Horizontal inzwa ekude ithatha itekhnoloji yokufunxa i-spectral ukuze ibone ukukhutshwa kwekharbhon diokside (CO2), i-carbon monoxide (CO), i-hydrocarbons (HC), kunye ne-nitrogen oxides (NOX) kwi-exhaust yemoto. Inkqubo yenzelwe zombini i-petroli kunye neenqwelo ze-diesel, kwaye inokubona i-opacity, i-particulate matter (PM2.5), kunye ne-ammonia (NH3) ye-petroli kunye neenqwelo ze-diesel.
Inkqubo yovavanyo yezivamvo ekude ethe tyaba ibandakanya umthombo wokukhanya kunye neyunithi yohlalutyo, iyunithi ebonisa i-engile echanekileyo, inkqubo yokufumana isantya/isantya, inkqubo yokuchonga isithuthi, inkqubo yothumelo lwedatha, inkqubo yekhabhathi engaguqukiyo yobushushu, inkqubo yemozulu kunye iyunithi yokusebenza, enokulawulwa kude ngenethiwekhi.