BENTLY 330878-51-05 Proximity Transducer System

BENTLY 330878-51-05 Proximity Transducer System

Product Description
Bently Nevada 330878-51-05 is a 3300 XL 50 mm Proximitor® Sensor designed for the 3300 XL 50 mm Proximity Transducer System. It is used for non-contact measurement of shaft position, vibration, differential expansion, and rotor expansion in large rotating machinery, especially steam turbine generator applications.

The 3300 XL 50 mm proximity system is an eddy-current measurement system consisting of a 50 mm proximity probe, extension cable, and Proximitor sensor. The large probe diameter provides an extended linear measurement range suitable for applications requiring large shaft movement measurement.

Technical Parameters

• Brand: Bently Nevada
• Model: 330878-51-05
• Product Type: Proximity Transducer System / 3300 XL 50 mm Proximitor Sensor
• System Series: 3300 XL 50 mm
• Measurement Principle: Eddy-current displacement measurement
• Total System Length: 5.0 m
• Mounting Type: DIN rail mount
• Approval: Multiple hazardous area approvals
• Linear Range: Up to 27.9 mm (1100 mils)
• Measurement Function:
  • Differential expansion (DE)
  • Rotor expansion (RX)
  • Shaft position monitoring
  • Vibration/displacement measurement
• Power Supply: -24 VDC
• Output Signal: Proportional voltage output to displacement
• Housing Material: Aluminum alloy
• Operating Temperature: Approx. -51°C to +100°C
• Origin: USA

Advantages & Features

• Original Bently Nevada 3300 XL proximity monitoring component
• Long linear measurement range for large turbine applications
• High accuracy non-contact displacement measurement
• Suitable for critical rotating equipment protection
• Stable signal performance under harsh industrial conditions
• DIN rail mounting design for convenient installation
• Compatible with Bently Nevada machinery protection systems
• Supports continuous condition monitoring and predictive maintenance

Applications

• Steam turbine generators
• Gas turbines
• Large rotating machinery
• Differential expansion monitoring systems
• Rotor position monitoring
• Turbine bearing vibration monitoring
• Machinery protection systems
• Industrial predictive maintenance systems

Notes

• 330878-51-05 is a Proximitor Sensor, not a complete probe assembly.
• The complete system requires matching 50 mm probe + extension cable + Proximitor sensor.
• Confirm system length (5 m / 9 m), probe type, and cable configuration before replacement.
• Incorrect matching may affect calibration accuracy and measurement performance.
• Installation and calibration should follow Bently Nevada system requirements.