... up to 200 g/m3) ozone concentrations. OA-200 Analyzer incorporates IN USA’s innovative dual optical-path sample sensing ... eliminate the need for a reference gas measurement. OA-200 Analyzer provides powerful microprocessor-based control, display, and output capabilities ... :0.1mg/LDisplay digits:4Accuracy:± 3% Communication:RS-485Communication Parameters:9600,8, N, 1Output:4~20 mA, linearInput Gas ...