Study on Development and Feasibility of Bench Tester for UV Flame Detector
In this study, the concept of bench test was established to replace the real distance test conducted outdoors for determining the sensitivity of UV flame detectors. In addition, the experimental apparatus of the bench test was developed and its validity was confirmed. The fire source of bench experiments used a microburner (6 mm diameter) using liquefied petroleum gas, and the bench test was performed with a flame height of 5 cm. The flame detector used in the experiment was a UV flame detector, and the amount of light was measured up to 2.4 m at a distance of 0.2 m from the fire source. The amount of light was used by converting the output signal of the UV sensor of the flame detector into an electrical signal. The fire source of the real distance test used normal heptane (n-Heptane) and measured the light up to 36 m at 5 m intervals. As a result of comparing the distance-light quantity measured in the two experiments, a straight line with the same slope was obtained and it was confirmed that bench test is possible indoors. The results of this study, if used by manufacturers in the development of flame detectors, will enable quality and performance improvements.