Tyco 516.038.004 S241I 4-20mA Intrinsically Safe Triple IR Flame Detector These models provide a 4-20mA output (current sink) that can be linked to a PLC type logic controller with the pre-set alarm currents provided for electronic fault, optical fault (dirty window), normal and fire alarm conditions. The interface can be achieved over a 3 core cable. Using technologies developed over more than 30 years, the microprocessor based Minerva S860 series flame detectors combine solar blind sensing of UV radiation and narrow waveband sensing of flame specific IR radiation to provide a reliable means of detecting flaming fires. The detectors are supplied in a Flameproof (Explosion proof) housing making them suitable for use in classified Hazardous Areas. They provide an easy interface to the range of Tyco conventional and analogue addressable panels. Key Features: Unrivalled black body rejection over a wide range of source temperatures Triple waveband infrared solar blind flame detection for optimum false alarm immunity Discrimination of optical faults (dirty windows) from other faults in the built-in self-test Range adjustable to 50 metres for a 0.1m2 n-heptane pan fire