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Flame Scanners
Flame Scanners
SAS offers Flame Scanner, ZFD-02. This is designed for better and reliable flame detection. In ZFD-02, advanced technology for flame signal processing and discrimination/identification of different flames, has been developed, with a Microcontroller technology. To overcome the usage of independent flame scanners for different fuels like coal and oil, a new integrated type flame scanner, which can detect the flames of various fuels as a single scanner, has been developed. The flame scanner consists of scanner head electronics and a control unit. The head assembly of the scanner consists of a quartz lens for collection of light signal and a fibre optic cable for transmission of the light signal to the head electronics. In the head electronics, a photo diode is used to convert the light signal to electrical signal. A log amplifier amplifies the electrical output of photo diode. The amplified signal is then compensated for background radiation of the furnace. The flame intensity component and flicker component of the signal is separated and processed for characteristic frequencies of coal and oil flames by a microcontroller-based signal processing. The software ensures discrimination of different flames through proper detection of characteristic flicker frequency range of the flame.
