Macro Sensors’ upgraded HLR series of intrinsically safe LVDT Linear-Position Sensors are for use in harsh environments such as gas/steam turbine plants, chemical process plants and paper mills. Rated for operation to 212 F (100 C), the HLR sensors are now UL/ULC-listed for hazardous locations Class I, Division 1, Groups A, B, C, D and Class I, Zone 2 by Underwriters Laboratories. Constructed entirely of stainless steel, the sensors offer reliable and contactless position measurement for critical applications in power plants using gas turbines such as fuel-valve position feedback, vane-pitch servo controls, governor controls and generator-shell expansion. Units are also a good fit for throttle-position sensing in natural gas pumping stations, height measurement for head boxes and slicers in paper mills, and real-time position sensing for all types of valves in chemical process plants. A through-bore design makes the LVDT cores accessible from both ends for better mechanical support and core guidance and easy cleanout in dusty or dirty locations. Sensor 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. Electronics can be installed in explosion-proof enclosures and connected to LVDTs using a suitable conduit. Available in full-scale measurement ranges from +/-1 inch to +/-10 inches, units feature repeatability typically better than 0.01 percent of full scale and non-linearity of less than 0.25 percent FRO.