Configured for non-contact shaft position and vibration monitoring in TSI platforms, the Bently Nevada 330876-02-10-01-00 (330876 50 mm Proximity Probe) provides direct physical execution of displacement sensing within the 3300 XL NSV system.

Model Suffix Specifications

• 330876: 3300 XL NSV Proximity Probe
• 02: Probe case length (50 mm)
• 10: Total length (1.0 meter)
• 01: Connector option (Miniature coaxial ClickLoc connector)
• 00: Agency approval (Not required)

Technical Hardware Specifications

Rotor Dynamics and Probe Scaling

The 3300 XL NSV system utilizes specific eddy-current probe scaling to accommodate narrow-range measurements required for small-shaft applications. Achieving accurate rotor dynamics data necessitates strict gap voltage validation; technicians should target a -10 VDC baseline when the probe is positioned at the electrical center of its range. Effective cross-talk suppression is achieved by following factory-defined minimum separation distances between adjacent sensors to prevent carrier frequency interference within the transducer system.

Ordering Info

• 1x 330876 50 mm Proximity Probe
• 1x Connector protector
• 1x Technical product datasheet

Installation Procedures

• Cable Routing: Ensure coaxial cables are installed within grounded steel conduit to isolate signals from electromagnetic interference.
• Torque Requirements: Apply appropriate torque to the mounting nut as specified in the manual to maintain structural integrity during machine operation.
• Gap Setting: Verify the gap voltage with a high-impedance multimeter at the Proximitor monitor terminal before finalizing the lock-nut position.
• Connector Sealing: Utilize the provided ClickLoc protector to ensure the integrity of the coaxial connection in environments exposed to hydrocarbons or moisture.

Frequently Asked Questions

• What distinguishes the NSV probe from standard 3300 XL probes?

  The NSV series is specifically engineered for non-contact measurements on shafts with small diameters where standard probes may exhibit excessive side-view interference.

• Is field calibration of the cable length permitted?

  No. The 3300 XL NSV system is calibrated as a matched set (Probe, Extension Cable, and Proximitor). Modifying lengths will alter the electrical characteristics.

• What is the purpose of the -10 VDC gap voltage?

  The -10 VDC target positions the probe in the center of the linear measurement range, allowing for maximum signal swing in both directions.

• Can this probe be connected to a standard 3300 XL Proximitor?

  No. The NSV probe must be paired with an NSV-specific Proximitor to ensure correct system scaling and frequency response.

• How does probe tip material affect the measurement?

  The probe is calibrated for AISI 4140 steel; using a different target material will require a correction factor or recalibration of the monitor.

• What are the limitations regarding hot-swapping?

  The probe can be replaced while the system is powered, but the change will induce a discontinuity in the monitored signal, potentially triggering alarms.

• How should the probe be grounded?

  The probe case is grounded through the mounting bracket; verify that the bracket maintains a low-impedance path to the machine frame.

• What is the maximum operating temperature of the probe tip?

  The probe tip is rated for continuous operation up to +177 deg C. Exceeding this limit will degrade the polymer material.