西门子LFS1.11A2 控制器

西门子LFS1.11A2 控制器

西门子SIEMENS火焰探测器LFS1.21A2,LFS1.11A2,可代替LFE10和LAE10以DF1191单波段红外火焰探测器为例，DF1191单波段红外火焰探测器(西门子)，微处理器控制的信号评估。

Flame safeguard with approval for continuous operation for the supervision of oil
flames and gas flames in applications with an ionization probe and a photocell
detector RAR9.
Flame safeguard for intermittent operating mode with UV flame detectors QRA2 /
QRA4 / QRA10.
LFS1 and this Data Sheet are intended for OEMs using the LFS1 in or on their
products.
Use, features
LFS1 units are designed for the supervision of oil burners and gas burners in
combination with control unit LEC1 or with programmable logic controllers.
Typical fields of application range from industrial burners up to the highest security level
SIL3 and in the field of ship burners.
Flame supervision:
-  takes place with photocell detector RAR9 with approval for continuous operation, in
the case of LFS1.1
-  takes place with an ionization probe with approval for continuous operation or with
UV flame detector QRA2 / QRA4 / QRA10 in intermittent operation, in the case of
LFS1.2
Excluded are the types QRA2M and QRA10M.
The flame detectors are used in conjunction with control unit LEC1 or with freely
programmable controllers in the following applications:
-  Dual supervision of burners / supervision of the main flame or of the ignition and
main flame by 2 flame safeguards with the same or different flame detectors
-  Multiflame supervision / plants with several burners whose flames must be
supervised individually by one or several flame detectors, but whose startup and
supervision is carried out centrally and simultaneously by only one control unit
-  The flame safeguards are also used as flame indication units in combustion
plants with manual startu