Bently Nevada 330878-51-00 3300 XL 50 mm Proximitor Sensor

Product Specifications

The Bently Nevada 330878-51-00 3300 XL 50 mm Proximitor Sensor is a key component of the 3300 XL 50 mm Transducer System, developed for precise non-contact measurement of large shaft movements in critical rotating machinery. Working together with a compatible 50 mm proximity probe and extension cable, the sensor provides accurate monitoring of differential expansion, rotor expansion, shaft position, and other displacement-related parameters in large steam turbine-generator applications.

The 3300 XL 50 mm Transducer System utilizes a large-diameter sensing coil that provides a maximum linear measurement range of 27.9 mm (1100 mils), the longest linear range available within Bently Nevada's eddy current transducer product family. This extended range makes the system particularly suitable for monitoring the thermal growth of turbine rotors relative to the machine casing during startup, shutdown, and load changes.

Frequently asked questions：

Q1: What is the Bently Nevada 330878-51-00 used for?
A: The 330878-51-00 is a 3300 XL 50 mm Proximitor Sensor used for non-contact measurement of differential expansion, rotor expansion, shaft position, and large displacement movements in critical rotating machinery.

Q2: Which transducer system does this sensor belong to?
A: It is part of the 3300 XL 50 mm Transducer System, which consists of a 50 mm probe, extension cable, and Proximitor Sensor.

Q3: What is the maximum linear measurement range of the 330878-51-00 system?
A: The 3300 XL 50 mm Transducer System provides a maximum linear range of 27.9 mm (1100 mils), the longest linear range available in Bently Nevada's eddy current transducer product line.

Q4: Why is a 50 mm transducer system used instead of a standard 8 mm system?
A: The 50 mm system is intended for applications requiring much larger displacement measurements, particularly differential expansion and rotor growth monitoring in large steam turbine-generator sets.

Product Applications

Power Generation
Oil & Gas
Chemical & Refining
Metallurgy and Steel Industry
Mining and Cement Industry

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