Table 4-1. Gas Analyzers Used During the Test Program

          
Parameter (Range)             Analyzer                    Analytical Technique
------------------      ----------------------          -------------------------
SO2 (0-1000 ppmd)       Western Research Model          Ultraviolet (UV)
                                721AT2
NOx (0-1000 ppmd)       Thermo Environmental            Chemiluminescence
                             Model 42H
HC (0-1000 ppmw)        Ratfisch Model RS255CA          Flame ionization
                                                         detector (FID)
CO (0-2000 ppmd)        Thermo Environmental            Infrared gas filter
                              Model 48                   correlation (GFC)
CO2 (0-20 %d)           Fuji MOdel 3300                 Non-dispersive infrared
                                                                (NDIR)
O2 (0-25 %d)            Teledyne 320P-4                 Micro-fuel cell
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