Macro Sensors' HLR 750 Series of 3\/4 inch diameter high reliability LVDT position sensors are specifically designed for use in gas turbine environments. Rated for operation to 300°F (150°C), these hermetically sealed AC-LVDTs are listed for Class I, Division 2, Groups A, B, C, D and Class I, Zone 2, Group IIC hazardous locations by Underwriters Laboratories. Constructed entirely of stainless steel for environmental robustness, they feature a through-bore design which makes the LVDTs' cores accessible from both ends for better mechanical support and core guidance and facilitates cleanout in dusty or dirty locations. An HLR LVDT's lead wires exit through a radially mounted 1\/2-14 NPT male threaded conduit fitting for easy attachment to an explosion-proof junction box as well as rigid or flexible conduit.