Bently Nevada 330780-91-CN 3300 XL 11 mm Proximitor Sensor

The Bently Nevada 330780-91-CN is a high-performance Proximitor Sensor from the 3300 XL 11 mm series, widely recognized for its reliability and precision in industrial vibration and position monitoring. Specifically engineered for use with 11 mm proximity probes, this model forms a critical part of Bently Nevada’s transducer system used in machinery protection and condition monitoring applications. The “CN” designation typically indicates a configuration or packaging variant intended for the Chinese market, without sacrificing technical integrity or performance.

This sensor plays a vital role in detecting radial shaft vibration, axial thrust position, and phase reference, especially in high-speed rotating equipment like turbines, compressors, and large industrial motors.

Product Specifications

Product Applications

The Bently Nevada 330780-91-CN is a key component in vibration and position monitoring systems, typically used in:

• Steam and gas turbines for radial and axial vibration analysis

• Centrifugal compressors for bearing and thrust position monitoring

• Large electric motors and generators to monitor shaft position and movement

• Industrial pumps and fans where imbalance and misalignment need detection

• Gearboxes and speed reducers for early fault identification

• Offshore oil platforms and petrochemical plants requiring rugged, certified equipment

• Power generation stations, especially in condition-based maintenance programs

Product Advantages

• API 670 Compliant: Designed to meet rigorous industry standards for critical machinery monitoring.

• Stable, Repeatable Output: Excellent linearity and low drift over time.

• Environmentally Robust: Operates effectively under wide temperature, vibration, and humidity conditions.

• Long-Term Deployment: Proven durability for use in long-life equipment installations.

• Interchangeable System Components: Fully compatible with 3300 XL probes and extension cables.

• Precision Engineering: Delivers highly accurate displacement and vibration measurements.

• Field-Proven Reliability: Trusted by OEMs and end users in thousands of machines worldwide.

FAQ

1. What does the ‘CN’ suffix in 330780-91-CN represent?

   It typically indicates a region-specific configuration, possibly for compliance with Chinese industry or shipping standards, without affecting the electrical or mechanical specifications.

2. Can the 330780-91-CN be used with any 11 mm proximity probe?

   It is optimized for use with the Bently Nevada 3300 XL 11 mm proximity probes, ensuring linearity and calibration integrity.

3. How accurate is the sensor’s output signal?

   The sensor provides a nominal sensitivity of –200 mV/mil (±5%) for precise displacement measurement.

4. Is it compatible with legacy Bently Nevada systems?

   Yes. It supports backward compatibility with older 3300 systems and works seamlessly with the 3500 Monitoring System.

5. What kind of environments is it designed for?

   It is ruggedized for use in high-vibration, high-temperature, and high-humidity industrial environments.

6. What’s the maximum cable length supported?

   The standard full system length can be up to 9 meters, including the probe, extension cable, and Proximitor sensor.

7. Is recalibration needed over time?

   Thanks to its thermal stability and mechanical design, recalibration is rarely needed during normal service life.

8. What mounting options are available?

   The sensor can be mounted on DIN rails or directly onto flat panels using standard screws.

9. Are there explosion-proof versions available?

   Yes. Depending on configuration and certifications, versions may be rated for ATEX/IECEx hazardous environments.

10. Does the sensor work with third-party vibration systems?

    While designed for Bently Nevada systems, it can output standard analog signals suitable for some third-party vibration monitoring tools.