Since its founding in 1982, Laser Components has specialized in IR sensors for use in flame detection devices. The company manufactures lead sulphide detectors at their assembly plant in Arizona and pyroelectric detectors in Florida. A flame will flicker randomly at a rate between 1 and 20 Hz when it is burned naturally, modulating any IR signal generated.
Pyroelectric and lead sulphide detectors sense this modulated IR light and so can provide a warning of the presence of a flame.
Laser Components’ PB25 PbS detector is a sensor for this application and generates a response to the presence of a flame in 30 ms at ranges out to 65 meters. The signal to noise characteristic of the IR sensor determines the range and sensitivity of the flame detection instrument, and the company has recently added a differential pyroelectric detector to its portfolio of sensors with improved signal to noise performance. This new product provides flame detection appliance manufacturers with a detector with improved range and immunity to electromagnetic interference.
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