24765-02-00 Case Expansion Transducer Assembly Bently Nevada

Overview

The Bently Nevada Case Expansion Transducer Assembly (Model 24765-02-00) is a cutting-edge solution for monitoring thermal growth in turbine casings during startup and operational conditions. Equipped with an advanced Linear Variable Differential Transformer (LVDT), this device ensures precise measurements to safeguard machinery. Its robust design meets TYPE 4 requirements, offering reliable performance in high-temperature environments.

Key Features

• Brand: Bently Nevada
• Model: 24765-02-00 (Case Expansion Transducer Assembly)
• Suffix Significance:
  • 02: Linear Range of 0.8 mm (2.0 in).
  • 00: No spring return.
• Compact dimensions for easy installation in confined spaces.
• Durable weatherproof housing ensures long-lasting reliability.
• Seamlessly integrates with 3500/45 Position Monitors.
• Exceptional linearity and stability for accurate readings.

Technical Specifications

• Linear Range: 50.8 mm (2.00 in).
• Scale Factor: 0.404 V/mm (10.25 V/in).
• -3 dB Frequency: 15 Hz.
• Linearity: ±0.5% full-range.
• Stability: 0.125% full-scale.
• Mechanical Dimensions:
  • Height: 88.9 mm (3.50 in).
  • Width: 117 mm (4.60 in).
  • Length: 241 mm (9.50 in).
• Weight: 2.3 kg (5.0 lbs).

Applications

This transducer is vital in Turbine Supervisory Instrumentation (TSI) to monitor case expansion, providing early detection of obstructions or jamming that could lead to machine distortion. It ensures alignment between the rotor and casing thermal growth, minimizing risks of rubbing or damage. Typical applications include:

• Turbine machinery monitoring.
• Alarm configurations for uneven thermal expansion.
• Performance optimization during machine startups.

How It Works

The system uses an LVDT mechanism to measure the machine’s case thermal expansion. The rod’s movement, triggered by thermal growth, alters the signal inside the LVDT, which is electronically processed and sent to monitors for real-time display and alarm settings.

FAQ

1. What monitors are compatible with this transducer?
It integrates seamlessly with Bently Nevada 3300 and 3500/45 Position Monitors.

2. Can this transducer handle high-temperature environments?
Yes, it is specifically designed to meet TYPE 4 requirements for extreme conditions.

3. Why is a dual transducer setup recommended?
A dual arrangement provides enhanced measurement accuracy and detects any obstruction or jamming of the machine case feet.

4. How does this transducer enhance turbine safety?
By monitoring thermal growth, it prevents misalignments, rubbing, or damage due to uneven expansion rates.

Check official datasheet for more detailed information: Case Expansion Transducer Systems