... Main Features and Specifications: 1. Measure concentration of HC, CO, CO2, O2 and NO contained in exhaust ... Dispersive Infrared) analysis technology is used to measure HC, CO, CO2 and the newest generation of ... vehicle power inverter. Main Technical Specifications Measuring Range: HC: 0~9,999 ppm (n-Hexane) CO: ... : 0~25 % NO: 0~5,000 ppm Measurement Accuracy: HC: ±12 ppm (abs.) 0~2,000 ppm ±5 % ( rel ...