PROP AS 2G6324 - Caterpillar

Note: For more information on calibration of the oxygen sensor, refer to Systems Operation, "Oxygen Sensor Calibration" (Appendix).Calibrate the oxygen sensor when the system is initially installed. If the oxygen sensor is replaced, calibrate the new sensor.The control can calibrate the oxygen sensor when the sensor is suspended in the ambient air. For best results, the sensor must be removed from the exhaust stack. Approximately 12 minutes are required for calibration. If any problems are detected, the process will cease and a diagnostic message will be displayed on the control.
Determine the ambient temperature, relative humidity, and barometric pressure.
Use Table 1 to determine whether your relative humidity is within the permissible range for calibration of the oxygen sensor.
Find the row for your ambient temperature.If the temperature is less than 12 °C (54 °F), use the 12 °C (54 °F) row.If the temperature is more than 38 °C (100 °F), do not calibrate the sensor.
Find the column for your barometric pressure.
Find the relative humidity in the cell that intersects your column and your row.If your relative humidity is equal to the humidity or greater than the humidity that is listed in Table 1, do not calibrate the sensor.
Table 1
Ambient Temperature, Barometric Pressure, and Relative Humidity for Calibration of the Oxygen Sensor    
Ambient Temperature     Barometric Pressure                        
96 kPa (13.9 psi)
97 kPa (14.7 psi)    
99 kPa (14.4 psi)    
101 kPa (14.6 psi)    
102 kPa (14.8 psi)    
104 kPa (15 psi)    
105 kPa (15.2 psi)    
107 kPa (15.5 psi)    
109 kPa (15.8 psi)    
110 kPa (16 psi)    
112 kPa (16.2 psi)    
113 kPa (16.4 psi)    
Relative Humidity  
12 °C (54 °F)     90     90     90     90     90     90     90     90     90     90     90     90    
14 °C (57 °F)     85     85     85     85     90     90     90     90     90     90     90     90    
16 °C (61 °F)     75     75     75     75     80     80     80     80     85     85     85     85    
18 °C (64 °F)     65     65     65     70     70     70     70     75     75     75     75     75    
20 °C (68 °F)     60     60     60     60     60     65     65     65     65     65     65     70    
22 °C (72 °F)     50     50     55     55     55     55     55     60     60     60     60     60    
24 °C (75 °F)