Intrinsically safe position sensors serve many purposes
TE Connectivity
The intrinsically safe HLIR 750 Series LVDT position sensors (photo) have a 4–20-mA output signal, and are CSA listed for use in hazardous locations and applications for which an intrinsically safe sensor is required. With stainless-steel construction and a hermetically sealed sensor body, these LVDT position sensors provide reliable, contactless position measurement for critical applications in gas turbines (such as fuel-valve position feedback), vane-pitch servo controls, governor controls, and generator-shell expansion measurement. Units are also suited for the following: throttle-position sensing in engine-driven compressors in natural gas pumping stations; for height measurement for head boxes and slicers in paper mills; for edge detection and web-tension controls in plastic film plants;and for realtime position sensing for all types of valves in process plants, says the company. — TE Connectivity, Pennsauken, N.J.