21504-04-36-05-02 Bently Nevada Probe Proximity Vibration Description Th e Bently Nevada 21504-04-36-05-02is designed to measure shaft displacement / proximity (gap) and/or vibration of rotating machinery in industrial applications (e.g., turbines, compressors, motors, turbines in oil & gas, power generation). It is part of the 7200 Transducer System which interfaces with Bently Nevada monitors and protection systems. A proximity probe of this type converts the changing gap