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