The Fireye Phoenix type 85UVF/IRF flame scanners are microprocessor based devices utilizing a solid state flame detection sensor. The Phoenix flame scanners incorporate an internal flame relay with automatically set ON/OFF thresholds, thereby eliminating the need for a remote flame amplifier or flame switch. Phoenix scanners detect the amplitude of the modulations (the flame “flicker”) that occur within the targeted flame, over a wide frequency. During the scanner setup procedure, the amplitudes of the target flame are automatically stored by the flame scanner, together with optimum ON/OFF criteria. The appropriate sensor gain is automatically selected. Phoenix scanners incorporate full self diagnostics and electronic self checking. The Phoenix 85UVF/IRF is available in multiple models differentiated by spectral range, levels of hazardous area certifications and agency approvals. Refer to Table 1 on page 3 for an overview of model numbers versus product certifications. The Phoenix 85UVF/IRF flame scanner is powered by 24Vdc. Electrical connection is via an 8-pin electrical quick-disconnect (QD). An analog 4 to 20mA output of flame strength is standard. Note: The Phoenix QD models with electrical quick-disconnect have replaced the original models equipped with ten feet of captive cable. The QD models (with 59-546-x cables) are suitable for use in Class I Division 2 hazardous areas, thereby eliminating the need for “EX” models. The “CEX” models remain unchanged for use in Ex II 2 G/D hazardous areas