Nominal Range: 0 ~ 2,000 ppm Maximum Overload: 4,000 ppm Sensitivity: 0.08 ± 0.02 μA/ppm Response Time (T90): ≤ 30 s Zero Signal: < ±0.4 μA Resolution: 1 ppm Linearity: Linear up to 2,000 ppm Bias Voltage: 0 mV