Kromschroder Flame sensor UVS10D1G1 84315202

The Kromschroder UVS10D1G1 is a UV flame sensor designed for gas and oil burners. It detects UV radiation from flames using a P578 UV tube and is compatible with automatic burner control units. The sensor features an aluminum housing with an integrated heat guard, a quartz window, and an M20 cable gland for cooling air connection. It operates within an ambient temperature range of -40 to 80 °C and has an ingress protection rating of IP65. The distance between the UV sensor and flame should be 300–400 mm, and the sensor weighs 360 g.

When selecting a replacement flame sensor of this type, ensure the detector type (UV), sensing element, and electrical connection match the burner control unit. The mounting thread (RP 1/2 internal) and cable gland size (M20) must fit the existing installation. Verify the cable gland diameter range (7–13 mm) and the distance between the sensor and flame (300–400 mm) for proper operation. Also, check the ambient temperature range and ingress protection rating to suit the environment.

UV flame sensors of this kind may fail due to UV tube degradation or contamination of the quartz window, leading to loss of flame detection. Symptoms include burner lockout or failure to ignite, with the control unit indicating a flame fault. Check the sensor's UV tube service life (approx. 10,000 operating hours) and inspect the window for dirt or damage. Ensure the sensor is correctly positioned within the specified distance from the flame.