| Eagle X Model | C155 | C157 | 
        
            | Temperature Measurement | 
        
            | Flue Temp Range | 20~2400°F (-29~1315°C) | 
        
            | Inlet Temperature (probe - T2) | 20~2400°F (-29~1315°C) | 
        
            | Inlet Temperature (ambient) | 32~112°F (0~50°C) | 
        
            | Net Temperature (ΔT)** | 20~2400°F (-29~1315°C) | 
        
            | Resolution | 0.1°C/F | 
        
            | Flue (T1, Inlet T2 & ΔT) Accuracy | ±(0.3% rdg +3.6°F(2°C)) | 
        
            | Inlet Temperature Accuracy | ±(0.3% rdg +1.8°F(1°C)) | 
        
            | Gas Measurement | 
        
            | Oxygen | 0~21%** | 
        
            | O2 resolution / accuracy | 0.1% / ±0.3% | 
        
            | Carbon Monoxide (CO) | 0~2000 ppm (4000 max 15 min)* | 
        
            | CO resolution / accuracy | 1 ppm / ±10 ppm<100ppm, ±5% rdg>100ppm
 | 
        
            | Carbon Dioxide (CO2) | 0~20%* | 
        
            | CO2 resolution / accuracy | 0.1% / ±2% | 
        
            | Efficiency** | 0~99.9%** | 
        
            | Efficiency resolution/accuracy | 0.1% / ±3% | 
        
            | Excess Air** | 0~250%** | 
        
            | Excess Air resolution/accuracy | 0.1% / ±3% | 
        
            | CO/CO2 ratio** | 0~0.999 | 
        
            | CO/CO2 resolution/accuracy | 0.001 / ± 5% rdg | 
        
            | Nitric Oxide (NO1)*** | - | 0~100 ppm | 
        
            | NO1 resolution/accuracy*** | - | ±2 ppm<30ppm ±5ppm<100 ppm
 | 
        
            | Pressure (Differential) | 
        
            | Range | ±0.08” wc (±0.2mBar) ±0.4” wc (±1mBar)
 ±32” wc (±80mBar)
 | 
        
            | Accuracy | 2±0.002” wc (±0.005mBar) ±0.01” wc (±0.03mBar)
 ±3% rdg
 | 
        
            | Pressure Resolution | 
        
            | Resolution | 0.001” wc < 9.999” wc 0.01” wc >10.00” wc
 0.001mBar<24.999mBar
 0.01mBar > 25 mBar
 | 
        
            | * Measured at STP (standard temperature and pressure) 0.01” wc >10.00” wc ** Calculated value
 *** NO1 sensor installed on C157. Available as an upgrade for C155.
 
 † Gas Zero (Fresh Air Zero) - Is a reset procedure to maintain accurate readings from the EOS sensor. This procedure compensates for any change in ambient conditions that may impact the readings
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