24765-01-01 Case Expansion Transducer Assembly Bently Nevada

Overview:

The Bently Nevada 24765-01-01 Case Expansion Transducer Assembly is essential for measuring the thermal growth of turbine cases, an important parameter in Turbine Supervisory Instrumentation (TSI). This device helps track machine case expansion during startup and operation, ensuring the alignment of turbine components and preventing damage. The assembly includes a linear variable differential transformer (LVDT) that offers precise measurements of case expansion, contributing to reliable monitoring of turbine performance.

Key Features:

• Designed to monitor thermal growth of turbine cases, often referred to as shell expansion.
• Utilizes a dual transducer arrangement to provide detailed position information on machine case feet.
• Dual configuration alarms when one foot is obstructed, protecting against potential machine damage.
• Compatible with 3300 and 3500 monitors for enhanced system integration.
• Ideal for measuring temperature growth differentials between the casing and rotor.
• High-temperature version meets TYPE 4 standards, ensuring durability and reliability.

Technical Specifications:

• Manufacturer: Bently Nevada
• Product No.: 24765-01-01
• Product Type: Case Expansion Transducer Assembly (DC)
• Linear Range: 0 to 25.4 mm (1.00 in)
• Scale Factor: 0.346 V/mm (8.79 V/in)
• Spring Option: 0 to 1 With spring return
• -3 dB Frequency: 20 Hz
• Linearity: ±0.5% full-range
• Stability: 0.125% full-scale
• 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)
• Country of Origin: USA

Application:

The Case Expansion Transducer Assembly is crucial in turbine monitoring systems, particularly for assessing case expansion during machine startup. It helps identify any discrepancies between the thermal growth rates of the rotor and casing, which could cause rubs or other operational issues. Typically used in conjunction with the 3300 or 3500 monitoring systems, it provides early detection of thermal growth problems.

FAQ:

1. What is the purpose of the Case Expansion Transducer?
2. The transducer measures the thermal growth of turbine cases, ensuring components expand properly during operation and startup.
3. How does the Case Expansion Transducer work?
4. It uses an LVDT to detect the movement of a rod attached to the turbine case. This movement changes the signal in the LVDT, which is then processed and monitored for abnormalities.
5. Is the Case Expansion Transducer compatible with my system?
6. Yes, it works with Bently Nevada 3300 and 3500 monitoring systems, including the 3500/45 Position Monitor for high-temperature applications.
7. Can I use this transducer in a high-temperature environment?
8. Yes, this model is specifically designed to meet TYPE 4 standards for high-temperature environments.
9. What are the dimensions of the 24765-01-01 Case Expansion Transducer?
10. The transducer measures 88.9 mm in height, 117 mm in width, and 241 mm in length, with a weight of 2.3 kg (5.0 lbs).

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