The Bently Nevada 330104-00-25-50-02-CN 3300 XL 8 mm Proximity Probe is a high-precision, non-contact eddy current sensor engineered for monitoring and protecting rotating machinery. Part of the 3300 XL series, this probe delivers accurate measurement of shaft displacement and vibration, providing essential data for machine protection, predictive maintenance, and operational optimization.

With an 8 mm probe diameter and a total cable length of 5 meters, the 330104-00-25-50-02-CN offers flexibility for large or complex industrial installations. Its stainless steel housing and mineral-insulated cable ensure durability against high vibration, temperature variations, and electromagnetic interference. Designed for seamless integration with Bently Nevada 3300 XL monitoring systems, the probe provides reliable, high-fidelity signals essential for detecting early-stage faults and preventing unplanned downtime.

Product Specifications

Applications

The 330104-00-25-50-02-CN is designed for accurate, real-time monitoring of industrial machinery where shaft position and vibration measurement are critical:

• Steam and Gas Turbines – Measures shaft displacement to detect rotor imbalance, misalignment, and instability.

• Compressors – Monitors rotor vibration and position for safe and efficient operation.

• Pumps – Detects cavitation, bearing wear, and shaft deflection.

• Generators and Motors – Ensures smooth operation and early detection of anomalies.

• Petrochemical and Refinery Plants – Functions reliably under harsh, high-vibration conditions.

• Machine Protection Systems – Supports API 670-compliant condition monitoring and protection.

Advantages

The Bently Nevada 330104-00-25-50-02-CN 8 mm Probe provides multiple operational and technical benefits:

• High Accuracy – Delivers precise measurement of displacement and vibration with excellent linearity.

• Rugged Design – Stainless steel probe and mineral-insulated cable resist harsh industrial environments.

• Wide Frequency Range – Detects both low-speed and high-speed shaft vibrations.

• Seamless Integration – Fully compatible with 3300 XL monitoring systems for real-time protection.

• Maintenance-Free Operation – Non-contact design reduces wear and maintenance requirements.

• Temperature and Vibration Resistant – Operates reliably under extreme conditions.

• Predictive Maintenance Support – Early detection of anomalies helps prevent unplanned downtime.

• Flexible Installation – Long 5-meter cable supports complex plant layouts and large machinery.

Frequently Asked Questions (FAQ)

1. Which monitoring systems is this probe compatible with?

   The probe is designed to integrate fully with Bently Nevada 3300 XL monitoring systems, providing accurate linearized displacement and vibration signals.

2. What is the nominal sensitivity of this probe?

   Nominal sensitivity is approximately 20 mV/µm when used with a 3300 XL monitoring system.

3. What frequency range can the probe measure?

   The probe supports DC to 10 kHz, suitable for both low-speed and high-speed machinery vibrations.

4. What is the operating temperature range for the probe head?

   Reliable operation is ensured between -40°C and +120°C while maintaining accurate measurements.

5. Can the probe be used in high-humidity industrial environments?

   Yes, it is rated for 0–95% non-condensing humidity and designed to perform in harsh industrial conditions.

6. What is the linear measurement range?

   ±10% of the calibrated gap ensures proportional and accurate output.

7. Does this probe require external power?

   No, power and signal conditioning are supplied by the 3300 XL monitoring system.

8. Is this probe suitable for API 670-compliant monitoring systems?

   Yes, it integrates seamlessly into API 670-compliant protection and monitoring platforms.

9. Does the 5-meter cable length affect measurement accuracy?

   Yes, the probe is calibrated for its 5-meter cable. Proper cable length ensures signal fidelity and accurate readings.

10. What mounting options are recommended?

    Threaded sleeve or custom machinery mounting is recommended to maintain alignment and calibration.