Bently Nevada 128987-130-02-05 3300 XL 8MM Proximity Sensor | Published

128987-130-02-05 Product datasheet

128987-130-02-05 Functional Description

The Bently Nevada 128987-130-02-05 3300 XL 8MM Proximity Sensoris part of the 3300 XL 25 mm Transducer System, engineered for precise differential expansion (DE) measurement in mid-size to large steam turbine generators. With a linear range of 12.7 mm (500 mils) and an output of 0.787 V/mm (20 mV/mil), the Bently Nevada 128987-130-02-05 delivers reliable performance in critical thermal growth monitoring applications.

This system is ideal for capturing axial movement caused by differences in expansion between the turbine rotor and stator. The 128987-130-02-05 3300 XL 8mm Proximiter Cableworks effectively in configurations where two proximity transducers observe either the same side or opposite sides of a collar, offering flexibility in various machine designs and operating conditions.

An alternate setup using ramp targets allows the 128987-130-02-05 Bently Nevada PDFto monitor more extensive DE ranges by compensating for radial motion. Although this introduces slight measurement error, it enables longer-range expansion detection, making it useful for turbines with limited collar size or unique geometries.

The 3300 XL 8MM Proximity Sensor 128987-130-02-05is especially suited for machines where DE targets such as collars or ramps are present. When collar height permits, using two transducers on the same side ensures redundancy and increases system reliability.