Description:The FIREYE® Type 25SU3-5166/5168 control confirms the presence or absence of a flame to provide reliable ignition and flame failure protection in an industrial or utility combustion application. The difference between the 25SU3-5166 and the 25SU3-5168 is in the characteristics of the amplifier sensitivity.The 5166 has high discrimination (low sensitivity) and the 5168 has high sensitivity (low discrimination). It should be used only in conjunction with a Fireye Type 45UV5, 45RM1, 45RM2, 45RM4, 45FS1, or 45UVFS1 flame scanner to provide repetitive self-checking of the flame safeguard system. Compatible flame scanners for the 25SU3 Model 5166/5168 control include: The Fireye Type 5166/5168 control provides flame safeguard interlock capability for systems incorporating single and multiple burner firing apparatus. Typical applications include power generation, industrial processes, pulp and paper mills, chemical plants, and electric utility furnaces and boilers that fire gas, oil, pulverised coal or a combination of these fuels on a continuous basis. The 5166/5168 control can also be applied in the flame safeguard circuits of supervised manual and semiautomatic burner management systems. This control monitors flame to supervise burner operation throughout the entire burner firing cycle.
