• Federal Equivalent Method：Yes, for NO₂ (0 ~ 500 ppb, 20 ~ 30°C), EQNA-0217-243
• Principle of Measurement：Direct absorbance of NO₂ at 405 nm
• Measurement Modes：NO₂ only; NO only; NO₂, NO and NOx
• Linear Dynamic Range：0 ~ 10,000 ppb (0 ~ 10 ppm) for NO₂; 0 ~ 2,000 ppb (0 ~ 2 ppm) for NO

         (FEM approved for 0-500 ppb NO₂ for 20 ~ 30°C)

• Resolution：0.1 ppb
• Response Time, 100% of Step Change：10 s for 5-s averaging. 20 s with adaptive filter
• Internal Data Logger Capacity：8,192 data lines; Virtually unlimited capacity with internal micro-SD Drive
• Long-Life Pump：Yes, 15,000 hr, 1.7 yr of continuous operation
• Flow Meter ：Yes