Deutsch 
English These UV flame sensors are used to monitor gas flames, yellow/blue-burning oil flames, and for ignition spark monitoring in intermittent operation. The sensitivity lies in the wavelength range of 190 ... 270 nm.
Service Note: The UV cell is glued into the housing and cannot be replaced separately. When the UV cell reaches the end of its service life, the entire sensor must be replaced.
Mounting is directly on the burner or boiler using a ¾"-14 NPSM connection thread. Connection cable approx. 1.8 m in length.
The QRA4M.U is suitable for the following automatic burner controllers:
• LFS1
• LME71 / LME72 / LME73 / LME76
• LMV26.300Ax with AGM60.1 switching unit
• LMV36.520Ax with AGM60.4 switching unit
• LMV37.4
Service Note: The UV cell is glued into the housing and cannot be replaced separately. When the UV cell reaches the end of its service life, the entire sensor must be replaced.
Mounting is directly on the burner or boiler using a ¾"-14 NPSM connection thread. Connection cable approx. 1.8 m in length.
The QRA4M.U is suitable for the following automatic burner controllers:
• LFS1
• LME71 / LME72 / LME73 / LME76
• LMV26.300Ax with AGM60.1 switching unit
• LMV36.520Ax with AGM60.4 switching unit
• LMV37.4