The Metrix 5485C is a moving-coil velocity transducer, designed for continuous use in elevated temperatures up to 375°C. A zero-friction coil suspension provides accurate, repeatable vibration measurements over a wide range of amplitude and frequency and is built to withstand high-g environments and cross-axis vibrations typical of gas turbines. The coil bobbin is suspended by two non-twist ng, circular spider springs that provide a clean frequency response. Purely viscous electromagnet c damping is employed to eliminate friction-prone air damping and improving detect on of small vibration amplitudes at low frequencies. https://agg-blackbox.com/Electrical/5485C-Velocity-Sensor