Thursday, November 13, 2014

Hamamatsu UVTron Sensor for Flame Detector Component Circuit

Eltronicschool. - Fire extinguisher robot need information to detect the fire to extinguished. To do this work robot need sensor to detect the fire. One way to know the fire, we can use the flame detector or sensor using Hamamatsu UVTron sensor like in figure 1 below.

Figure 1. Hamamatsu UVTron Sensor for Flame Detector

Sensor Description

Hamamatsu UVTron Flame Detector and its driver circuit can detect flame of a candle within 5 meters. This sensor is used as tool to detect the source of the fire which operate on long-spectral 185 nm to 160 nm.

UVTron tube works when the cathode is given signal ultraviolet photoelectron will be emitted from the cathode by the photoelectric effect and accelerated to the anode using an electric field. when the voltage granted, the magnetic field increases, the greater the electric field and electron kinetic energy be great to ionize gas molecules in the tube to collide. 

The electrons generated by ionization accelerated electrons ionize molecules that make other before reach the anode. Positive ions are accelerated to the cathode and collide Other causes of secondary electrons, these events led to the current sizeable occur between the electrodes and dumping. 

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