Kromschroder Flame sensor UVS10D0P2 84315209

The Kromschroder UVS10D0P2 is a UV flame sensor designed for flame monitoring in gas burners. It operates by detecting UV radiation from the flame using a P578 UV tube, with a spectral range of 190–270 nm and maximum sensitivity at 210 nm. The sensor features an aluminum housing with an integrated heat guard and quartz glass lens, and is rated IP65 for ingress protection. It has a 4-pin plug with socket, a connection thread of RP 1/2 internal, and a cable gland for diameters of 7–13 mm. The recommended distance between the sensor and flame is 300–400 mm, and it operates in ambient temperatures from -40 to 80 °C. The sensor weighs 360 g and has a service life of approximately 10,000 operating hours.

When selecting a UV flame sensor of this type, ensure compatibility with the burner control unit (e.g., Elster Kromschroder IFS, IFD, PFS, PFD, IFW, PFF, BCU, PFU) and that the connection thread (RP 1/2 internal) matches the viewing tube. The sensor must be aligned on the first flame third, where UV radiation is highest, and positioned at a distance of 300–400 mm from the flame. The cable gland must accommodate the cable diameter (7–13 mm), and the electrical connection (4-pin plug with socket) must match the control unit's wiring. Cooling air must be supplied to protect the sensor from high temperatures and contamination.

Common failure modes for UV flame sensors include degradation of the UV tube, leading to reduced sensitivity or false flame loss signals. Symptoms may include burner lockouts, intermittent flame detection, or failure to detect the flame. Check the sensor's viewing window for dirt or condensation, verify the alignment and distance to the flame, and test the UV tube's output (minimum DC signal 1 µA) to diagnose issues.