Nominal Range: 0-250 ppm Maximum Overload: 1000 ppm Expected Operating Life: Two years in air Output Signal: 0.4 ± 0.08 ?A/ppm Resolution: 0.5 ppm Temperature Range: -20°C to +50°C Pressure Range: Atmospheric ± 10% T90 Response Time: <40 seconds Relative Humidity Range: 15 to 90% non-condensing Typical Baseline Range (pure air): 0 to +3 ppm Maximum Zero Shift (+20°C to +40°C): <4 ppm Typical Long Term Output Drift: <2% signal loss/month Recommended Load Resistor: 10 W Bias Voltage: +300 mV Repeatability: <2% of signal Output Linearity: Linear