24765-01-01 | Bently Nevada | Case Expansion Transducer Assembly

Bently Nevada 24765-01-01 Case Expansion Transducer Assembly

The Bently Nevada 24765-01-01, also cataloged as the 24765 transducer assembly, operates as a direct current linear variable differential transformer (DC LVDT) for case expansion measurement in turbine supervisory instrumentation systems.

Hardware Specifications

Rotor Dynamics and Eddy-Current Probe Scaling

Although the 24765-01-01 is a DC LVDT transducer, its output is often correlated with rotor dynamics in turbine supervisory instrumentation. Eddy-current probe scaling conventions are applied to maintain coherence between case expansion readings and shaft vibration measurements. Gap voltage validation near -10 VDC targets ensures proper probe calibration, while cross-talk suppression techniques prevent interference between adjacent monitoring channels.

Frequently Asked Questions

Q: What is the linear measurement range of the 24765-01-01? A: The transducer provides a ±12.7 mm range from center, totaling 25.4 mm.

Q: Can the unit operate in condensing humidity environments? A: Yes, it is rated for 100% condensing humidity conditions.

Q: What is the minimum spring force applied at full extension? A: The spring return applies at least 5.3 N (1.2 lbs) at full extension.

Field Installation Guidelines

• Mount the transducer securely using the heavy-duty foot-mount base block.
• Ensure proper alignment of the spring return mechanism to avoid mechanical binding.
• Route signal wiring separately from high-current cabling to minimize EMI.
• Confirm grounding of housing and shield connections before energizing.
• Validate scale factor output during commissioning against reference displacement standards.