| 摘要 |
The invention relates to a flame monitoring system (1) for a combustion chamber (3) provided with an ionisation sensor (4), comprising a signal generator (8) for supplying a monitoring signal (VAC) to the ionisation sensor (4) and a signal measuring unit (11) for measuring at least one ionisation signal (VDC) from the ionisation sensor. The flame monitoring system (1) is further arranged for interrupting the supply of the monitoring signal (VAC) to the ionisation sensor (4) during at least one interval (to) and measuring a zero signal (V0) substantially during said interval (t0). <IMAGE> |
