Kromschroder Flame sensor UVS10D4G1 84315204

The Kromschroder UVS10D4G1 is a UV flame sensor designed for use with automatic burner control units in gas burner systems. It detects UV radiation from flames using a P578 UV tube, with a spectral range of 190–270 nm and maximum sensitivity at 210 nm ±10 nm. The sensor features an aluminum housing with an integrated heat guard, quartz glass lens, and M20 cable gland for cable diameters of 7–13 mm. It operates within an ambient temperature range of -40 to 80 °C and has an IP65 enclosure rating. The device weighs 360 g and has a service life of approximately 10,000 operating hours. It is compatible with Kromschroder automatic burner control units and flame detectors, and is manufactured in Germany.

When selecting a UV flame sensor of this type, ensure the distance between the sensor and the flame is within the specified range (300–400 mm) for proper detection. The sensor must be compatible with the burner control unit's input requirements, and the electrical connection terminals should match the wiring. The cable gland size (M20) and diameter range (7–13 mm) must accommodate the cable used. The sensor's housing material and ingress protection rating should be suitable for the installation environment. Always verify the sensor's UV tube type and spectral sensitivity against the burner's flame characteristics.

Common failure modes for UV flame sensors include degradation or failure of the UV tube, leading to loss of flame detection. Symptoms may include the burner control unit failing to ignite or shutting down during operation, often displaying a flame loss error. Contamination of the quartz glass lens or heat guard can also reduce sensitivity, causing intermittent operation. Electrical connection issues, such as loose terminals or damaged cables, may result in erratic signals. Regular inspection of the sensor's lens, cable, and connections is recommended to ensure performance.