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Product details

3300 XL Proximity Transducer System

The 3300 XL 25 mm proximity sensor system consists of a separate 25 mm probe, extension cable and 3300 XL 25 mm Proximitor sensor. The system has an output of 0.787 V/mm (20 mV/mil), providing a linear measurement range of 12.7 mm (500 mils). Based on this linear range, the 3300 XL 25 mm proximity sensor system is suitable for measuring differential expansion (DE) in medium to large turbine generators due to the difference in growth rate between the turbine rotor and the machine stator (housing).

Differential expansion (DE) measurement

Differential expansion measurement is achieved by observing the flange or slope of the thrust bearing at a certain distance with two proximity sensors. A typical sensor installation is as follows:

The two sensors observe the same side of the flange.

Two complementary input sensors observe each side of the flange, effectively doubling the DE range that can be measured.

Two sensors, at least one of which observes the bevel on the rotor, while the second sensor observes the other independent bevel or a different location on the rotor to compensate for radial motion. This arrangement introduces some errors to the measurement, but it can measure a longer total DE distance than complementary measurements.

The criteria for selecting the mounting method depend on the size of the target available, the expected amount of axial movement of the rotor, and the type of DE target present in the machine (flanges versus bevels). If the flange height is sufficient, the 3300 XL proximity sensor system with two sensors observing the same side of the flange is the preferred configuration. These two sensors provide redundant measurements.

System characteristics and advantages

The 3300 XL proximity sensor system, with its excellent linear range and accuracy, is ideal for measuring differential expansion of large mechanical components, especially steam turbines. The system has the following significant features and advantages:

High precision measurement: The system's high sensitivity and high resolution ensure the accuracy of differential expansion measurements, helping to detect mechanical failures and potential risks in a timely manner.

Wide applicability: Suitable for different sizes and types of steam turbines to meet the measurement needs of different application scenarios.

Stable and reliable: The use of high-quality probes and sensors, with excellent anti-interference ability and long-term stability, to ensure the reliability of measurement results.

Easy installation and maintenance: The system structure is simple, easy to install, and the maintenance cost is low, reducing the overall operating cost.

Application precautions

When using the 3300 XL proximity sensor system for differential expansion measurement, the following points need to be noted:

Installation position selection: The installation position of the sensor should be as close as possible to the flange or bevel to be measured to reduce measurement errors.

Ambient temperature and vibration: The system should be installed in an area with stable ambient temperature and low vibration to ensure the stability of the measurement results.

Regular calibration and maintenance: The system is calibrated and maintained regularly to ensure the performance and accuracy of the sensor.

Sum up

The 3300 XL proximity sensor system has an important position in the field of mechanical condition monitoring due to its high accuracy, high stability and wide range of applications. Through reasonable installation and maintenance, the system can effectively help users monitor the differential expansion of mechanical parts, find potential problems in time, and ensure the safe operation of mechanical equipment.

Technical support and service

Bently Nevada, as a professional provider of mechanical condition monitoring solutions, provides comprehensive technical support and services for the 3300 XL proximity sensor system. Our technical team is ready to provide you with consultation, installation guidance, calibration maintenance and troubleshooting services to ensure that you get the best experience during use.

For more details about the 3300 XL Proximity Sensor system or purchase intentions, please contact us. We will be happy to provide you with quality products and professional services.

Product Parameter

Model Number: 3300XL

Origin:USA

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