Flame detector QRA51M for mounting on the burner (lateral incidence of light)

The dust- and splash water-proof housing of this flame detector has a fanged-on robust light metal tube with a radiation entry window for lateral viewing. A cylindrical slotted shutter rotates in the tube which interrupts the incidence of UV radiation to the UV cell mounted directly behind the radiation entry window at the rate of about 3 times per second (continuous testing of the cell’s striking and quenching performance).

The outer tube can be rotated through 180° by loosening 2 locking screws. A special clamping flange is supplied with the flame detector to ensure its vibration- and turning-proof fixing to the burner.