Measurements :
O2 : 0 to 20.9%
CO (low-range, H2 compensated) : 0 to 4000 ppm
CO (high-range, optional) : 4001 to 80,000 ppm
NO (optional) : 0 to 3500 ppm
NO2 (optional) : 0 to 500 ppm
SO2 (optional) : 0 to 4000 ppm
Combustibles (optional) : 0 to 5% vol. (application dependent)
Stack temperature : -4 to 2400°F (-20 to 1215°C)
Primary/ambient air temperature : -4 to 999°F (-20 to 537°C)
Draft/differential pressure : 27.7 inH2O(±69 mbar)
Fuels[1] : Natural gas, coal, oil 2/4/5/6, wood, kerosene, bagasse, propane, LPG, KOKS, LEG, biofuel
Power : Internal rechargeable battery or via supplied wall adapter
Run Time : 8 hours minimum
Warm-up Time : 60 seconds
Memory : 1000 locations
Communications : RS-232
Approvals : CE mark
Size (H x W x D) : 13.5 x 18.5 x 9 in. (34.3 x 47.0 x 22.9 cm)
Weight : 25 lb. (11.3 kg)

*Note: The ECA 450 calculates CO2 value based upon other measured values during the combustion process. It does not measure CO2 directly.