The invention relates to a flame-monitoring device in which an a.c. input voltage (U1) is limited to a voltage limit (U2) by means of a voltage limiter (4). Said voltage limit (U2) is applied to a flame sensing device (7) which operates by means of the rectifying effect of a flame, and through which a current (i) flows, especially when a flame (6) is present. An asymmetric voltage limit (U2) can be defined by said voltage limiter (4), said limit being then applied to the sensing device (7).
申请公布号
WO02095295(A1)
申请公布日期
2002.11.28
申请号
WO2002IB01758
申请日期
2002.05.22
申请人
SIEMENS BUILDING TECHNOLOGIES AG;BOTT, KLAUS;DIEBOLD, ALEXANDER;KIND, REINER;HOFFMANN, JUERGEN