Sensore di fiamma Siemens QRB1A-A050B40A

The Siemens QRB1A-A050B40A flame sensor is designed for monitoring burning yellow flame liquid fuel in combination with burner controls of types LAL..., LME7..., LMO..., LMV... and LOA... The maximum spectral sensitivity of the QRB1A-A050B40A sensor is approximately 600 nm, thus taking into account the maximum level of visible light emission from burning yellow flame liquid fuel. This sensor is suitable for both frontal and lateral (90°) illumination.