| 摘要 |
An oxygen depletion sensor relies on the shift of a pilot flame away from a nozzle as the oxygen content of the combustion air decreases. A thermocouple is positioned so as to be in the flame during combustion at acceptable oxygen levels and in the unburned zone when the oxygen content is below an acceptable level. The large voltage difference between conditions of high and low oxygen content provide for a more reliable sensor. |
