Kromschroder Flame sensor UVC1L1G1A 84320300

The Kromschroder UVC1L1G1A flame sensor (SKU 84320300) is a UV-sensitive detector designed to monitor flames emitting UV radiation in industrial thermoprocessing systems. It operates with a supply voltage of 100–230 V AC at 50 Hz, using a P578 UV tube with a spectral range of 190–270 nm. The sensor is suitable for intermittent and continuous operation with Kromschroder BCU and PFU burner controls. It features an aluminum housing, quartz glass heat guard lens, RP 1/2 internal thread, and M20 cable gland. The distance between the UV flame detector and flame should be 300–400 mm, and the clamping range of connection terminals is 0.5–1.5 mm². The ambient and storage temperature range is -20 to 80 °C, with a safety class of 1 and designed lifetime of 10 years.

When selecting a replacement flame sensor of this type, ensure compatibility with the burner control unit (e.g., Kromschroder BCU or PFU) and verify the supply voltage and frequency. The sensor must be positioned at the correct distance from the flame (typically 300–400 mm) and connected via terminals L and N. Check the cable gland size (M20) and the internal thread (RP 1/2) to match the mounting. Also confirm the clamping range of connection terminals (0.5–1.5 mm²) and the ambient temperature limits.

Common failure modes for UV flame sensors include degradation of the UV tube, leading to reduced sensitivity or failure to detect the flame. This may cause the burner control to lock out or fail to start. Check the sensor's lens for dirt or damage, and verify the electrical connections. If the sensor fails, the equipment may display an error code or shut down for safety.