# Exhaust Gas Analyzer QRO-401 Features - Outstanding accuracy, stability and durability - NOx measurement upgradable(option) - Stand-by for low power consumption when unit is not in use - Warming-up time (2…8minutes.) - Six LED indicators - Built-in internal printer - RS232 PC program - Elegant appearance - Portable (compact size, light weight) - Extra filters and printer paper - For professional use of engine tune-up - Compatible with chassis dynamo and engine tune-up Functions - Air leakage check - Hold : temporary pause to measurement - The zero/span calibration - The residual HC test - The selection of fuel type : 1.Gasoline 2.LPG 3.CNG 4.Alcohol - Hcv and Ocv conversation - Printing of data, date and time * specification 1. Measuring item : CO, HC, CO2, O2, ル(Lambda), AFR, NOx(optional) 2. Measuring method CO, HC, CO2 : NDIR Method O2, : Electrochemical Method 3. Measuring range : CO : 0.00 … 9.99% HC : 0 … 9999ppm CO2 : 0.0 … 20.0% O2 : 0.0 … 25.0% ル : 0.000 … 2.000 AFR : 0.0 … 99.0 4. Warming-up time : About 2… 8minutes 5. Power source : AC110V only or AC220V only 【10% 60Hz 6. Operation temperature : 0∩ … 40∩ 7. Dimensions : 285(W)】410(D)】155(H) 8. Weight : About 4.7Ц