Introduction to the 330850-91-CN 3300 XL 25 mm Transducer System The 3300 XL 25 mm Transducer System is an advanced measurement solution designed to provide highly accurate readings in industrial settings. It consists of three main components: a separate 25 mm probe, an extension cable, and a 3300 XL 25 mm Proximitor® Sensor. This system is primarily used for measuring Differential Expansion (DE) in mid-size to large steam turbine generators, offering a precise linear range of 12.7 mm (500 mils) and an output of 0.787 V/mm (20 mV/mil). Why Differential Expansion (DE) Measurement is Important Differential Expansion (DE) is crucial in monitoring the health and performance of turbine systems. In turbine generators, the rotor and stator experience expansion differences due to thermal effects. DE measurement helps in understanding how much the rotor moves in relation to the stator, providing vital data that ensures smooth operation and identifies potential issues that could affect the performance of the turbine. Key Components of the 330850-91-CN 3300 XL 25 mm Transducer System The system comprises three integral parts: 25 mm Probe: This part of the system is responsible for direct interaction with the component being measured, detecting minute changes in displacement. Extension Cable: Allows for flexibility and easy placement of the probe, ensuring that the measurements can be taken from a suitable distance without compromising the system’s accuracy. 3300 XL Proximitor® Sensor: The sensor converts the physical measurement into a readable output, offering a linear range that is crucial for accurate DE measurement in complex turbine systems. Common Transducer Mounting Arrangements for DE Measurement There are several mounting arrangements for proximity transducers that can be used in measuring Differential Expansion. These configurations help in obtaining reliable data across different turbine setups: Same-Side Collar Observation: Two transducers observe the same side of a collar, providing basic differential readings for DE. Complementary Input Transducers: In this setup, two transducers observe opposite sides of a collar. This effectively doubles the measurable DE range, providing more comprehensive data. Rotor Ramp Observation: One transducer monitors a ramp on the rotor, while the second transducer monitors a different location or a separate ramp to compensate for any radial movement. Though this method may introduce slight measurement error, it extends the total DE measurement range, making it valuable for larger turbine systems. Benefits of the 330850-91-CN 3300 XL 25 mm Transducer System The 3300 XL 25 mm Transducer System provides significant advantages, such as: Precision: With its 0.787 V/mm output and linear measurement range, it ensures highly accurate readings. Versatility: The system can be used with various transducer mounting arrangements, making it adaptable to different turbine generator configurations. Reliability: The robust...
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