... Technical ParameterMeasurement RangeCO: 0~10.0 10-2 (%) CO2: 0~20.0 10-2 (%) HC: 0~10000 ... : 0~40000 10 -6 (ppm)Response TimeCO,HC,CO2≤10s, NO,O2≤15sIndication ErrorCO: ±5%(relative error: ... Used to measure the concentration of HC,CO,CO2,O2,NO(4Q without NO)in the Automobile ... calculation and show the air-fuel ratio7. Equipped with RS232 digital serial communication interface to facilitate networking8. ...