Photosensor Siemens QRB1A - A068B70B

Photosensor Siemens QRB 1A - A068B70B

used with Siemens combustion controllers to control combustion of liquid fuel burners.

Photoresistive sensors are designed for use with Siemens burner controls and serve to monitor liquid fuel burner flames in the visible light spectrum. QRB… are primarily used with liquid fuel burner controls in intermittent operation.

Flame detectors QRB... are designed to monitor liquid fuel burning with a yellow flame in combination with burner controls of the LAL..., LME7..., LMO..., LMV... and LOA... types.

They are suitable for front and side lighting (90°).

The maximum spectral sensitivity of QRB… is approximately 600 nm, thus taking into account the maximum level of visible light emission from a yellow-flame burning liquid fuel.
Since QRB… also registers some parts of the radiation spectrum of other light sources (lighting in a boiler room, with
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