... of HC,CO,CO2,O2,NOx SV-5Q automobile exhaust gas analyzerFunctional feature:In accordance with non-light-disguising ... thickness of HC, CO and CO2 in the exhaust gas of vehicles and inspect the density of NO and ... , light weight, storage of 500 groups’ data of exhaust gas measurement. Particularly it is suitable for check along the ... signal: Number volume: RS232 serial massage exit.CE Certificate: