Product Overview

The Bently Nevada 330102-00-36-05-02-05 is a high-performance 8 mm proximity probe assembly belonging to the 3300 XL series. Engineered for the non-contact measurement of shaft displacement, vibration, and position in rotating machinery, this transducer is a staple in Turbine Supervisory Instrumentation (TSI) systems worldwide. It operates on the eddy-current principle, where a high-frequency radio signal emitted from the probe tip interacts with the target material, creating a voltage output directly proportional to the gap between the probe and the shaft.

Built for the demanding environments of power generation and hydrocarbon processing, the 330102-00-36-05-02-05 features a robust TipLoc design that ensures the probe tip remains securely bonded to the probe body, even under conditions of high vibration and thermal cycling. This specific model is fully compliant with API 670 standards, making it the industry benchmark for monitoring critical assets such as steam turbines, centrifugal compressors, and industrial generators. By providing precise, linear output data, it enables predictive maintenance teams to identify potential machine failures, such as bearing wear or rotor misalignment, long before catastrophic damage occurs.

Technical Specifications

Model Configuration Explanation

The part number 330102-00-36-05-02-05 defines the specific technical attributes of the probe:

• 330102: Designates the 3300 XL 8 mm standard mount proximity probe family.

• 00: Specifies the unthreaded length (0 mm, fully threaded).

• 36: Indicates a 36 mm case length.

• 05: Represents a total system length of 0.5 meters (for specific sensor pairing).

• 02: Specifies the connector type and mounting configuration.

• 05: Agency approval code (e.g., CSA/NRTL/C for hazardous areas).

Typical Applications

The 330102-00-36-05-02-05 is utilized in critical monitoring applications including:

• Steam and Gas Turbines: Radial vibration monitoring of bearing journals.

• Centrifugal Compressors: Axial rotor position and thrust bearing health monitoring.

• Industrial Gearboxes: Detection of gear tooth-mesh vibration and alignment shifts.

• Large Motors and Generators: Air-gap monitoring and shaft stability diagnostics.

• High-Speed Rotating Machinery: Providing raw signal data for ODS (Operating Deflection Shape) analysis.

System Compatibility

This probe is fully optimized for use within the Bently Nevada 3300 XL transducer ecosystem:

• Proximitor Sensors: Designed to work with 3300 XL 8 mm Proximitor sensors for a complete, calibrated measurement loop.

• Extension Cables: Fully compatible with 3300 XL extension cables to reach total system lengths of 5 or 9 meters.

• Monitoring Racks: Integrates seamlessly with Bently Nevada 3500 and 3300 series vibration monitoring racks.

• Mounting Accessories: Compatible with standard probe housings, brackets, and conduit assemblies.

Installation Guidelines

• Thread Preparation: Ensure the mounting port is clean and free of debris. Use approved thread sealants if required by local site standards.

• Gap Setting: Use a depth micrometer to set the nominal gap between the probe tip and the shaft. For standard monitoring, a target of -10 VDC (typical mid-range) is recommended.

• Alignment: Install the probe perpendicular to the shaft centerline to ensure linear sensitivity across the measurement range.

• Torque Control: Tighten the jam nut securely to prevent the probe from vibrating loose during machine operation. Avoid over-torquing.

• Shielding: Ensure the coaxial cable is routed in dedicated, grounded conduit to protect against electromagnetic noise.

• Connector Integrity: Inspect ClickLoc connectors for cleanliness and proper seating. A "click" indicates a secure electrical connection.

Product Advantages

• API 670 Compliance: Meets the strict requirements of international standards for machine protection.

• Thermal Stability: Engineered to maintain accuracy across extreme temperature fluctuations found in turbine bearing housings.

• TipLoc Technology: Superior mechanical design prevents probe tip separation, a common failure mode in lower-quality transducers.

• EMI Resistance: High-grade coaxial cable and shielding effectively minimize noise from surrounding industrial equipment.

• Reliability: Factory-tested for electrical linearity and environmental ruggedness to ensure long-term operational availability.

Ordering Information

The probe is provided with all necessary locking nuts and washers for standard installation. Always verify your specific site requirement for hazardous area certifications (Agency Approval code) before procurement. Each unit is delivered with a calibration certificate confirming its linear response curve against a standard 4140 steel target.

Frequently Asked Questions

• Can this probe be used for non-4140 steel targets?

  Yes, but the scale factor will change. You must perform a field calibration or apply a correction factor for the specific material (e.g., stainless steel, aluminum).

• Does the probe length (0.5m) include the extension cable?

  No. This part number refers to the probe itself. The "0.5m" indicates the length of the integral cable attached to the probe tip.

• How do I identify a faulty proximity probe?

  Look for a "Gap Error" on your monitor, erratic readings, or a steady output at the power supply rail voltage (indicative of a cable break).

• Is the 330102-00-36-05-02-05 oil-resistant?

  Yes, the probe body and cable are designed for immersion in standard industrial turbine oils and lubricants.

• Can I shorten the integral cable?

  Never cut or splice the integral cable. Doing so will alter the impedance of the transducer loop and invalidate the factory calibration.

• What is the "05" agency approval?

  This indicates the probe is rated for use in specific hazardous areas (consult the Bently Nevada datasheet for the exact certification rating).

• Can I mix this with an older 3300-series Proximitor?

  While it may physically connect, the 3300 XL system is electrically tuned. Mixing components will result in measurement errors and is not recommended.

• How often should probes be replaced?

  Probes are typically replaced during scheduled machine overhauls or if signal drift exceeds site-specific allowable limits.