Forney UV-4 Flame Detector Base Sensor, models 37900901 and 650452, is an industrial flame-detection base component. It functions as the base sensor element for ultraviolet (UV) flame detectors, used in safety-critical industrial environments to detect flame presence. The product is identified by the Forney part numbers 37900901 and 650452, confirming the exact base sensor referenced in UV-4 flame detector assemblies.
