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The 3300 XL 25mm Transducer System consists of a separate 25 mm probe, an extension cable, and a 3300 XL 25mm Proximitor Sensor. The 0.787 V/mm (20 mV/mil) output gives this system a linear range of 12.7mm (500 mils). Based on this linear range, the 3300 XL 25mm Transducer System is suitable for measuring differential expansion (DE) on mid-size to large steam turbine generators caused by the difference in growth rates between the turbine rotor and the machine stator (casing).