Bently Nevada 330104-06-25-05-02-00 3300 XL 8 mm Proximity Sensors

Bently Nevada 330104-06-25-05-02-00 3300 XL 8 mm Proximity Probes

The Bently Nevada 330104-06-25-05-02-00, also cataloged as the 330104 Proximity Sensors, operates as a dedicated hardware component for contactless vibration and position monitoring within TSI platforms. The physical assembly incorporates an M10x1 metric threaded body with flexible armor, an unthreaded length code of 06, a 250 mm overall case length, and a 0.5 m cable terminating in a ClickLoc miniature coaxial connector. Operating alongside a matching 3300 XL Proximitor Sensor, this component transfers electromagnetic field perturbations caused by shaft surface displacement into proportional electrical signals without physical target contact.

Suffix Breakdown & Model Matrix

Hardware Specifications

Eddy-Current Probe Scaling & Rotor Dynamics

The transducer relies on eddy-current probe scaling to convert dynamic mechanical movement into electrical potential. When an RF excitation signal energizes the probe tip coil, it project a high-frequency magnetic field into the target material. Shaft movement alters eddy current distribution within the metal surface, which changes coil impedance. The system converts this impedance shift into a linear output voltage scaled at 7.87 V/mm (200 mV/mil). During installation, technicians perform gap voltage validation (-10 VDC targets) at the midpoint of the physical dynamic range. Proper gap positioning ensures accurate tracking of rotor dynamics while preventing cross-talk suppression failures across tightly spaced adjacent channels.

Frequently Asked Questions

Q: How do technicians confirm correct mechanical position during transducer setup?

A: Technicians thread the probe body into the mounting bracket while observing a calibrated Digital Multimeter (DMM) connected to the Proximitor sensor raw output terminals. Rotating the probe until the DMM reads -10 VDC establishes the physical center of the linear voltage range.

Q: Can maintenance staff swap individual probes without recalibrating the entire loop?

A: Yes, because Bently Nevada designs 3300 XL components with strict inter-changeability tolerances, field crews can replace the probe without performing recalibration, provided the total system cable length remains constant.

Field Installation Guidelines

1. Mounting Thread Torque: Thread the M10x1 probe body into the tapped hole by hand. Use a calibrated torque wrench to tighten the lock nut to 7.5 N-m (66 in-lb) maximum to prevent case deformation.
2. Cable Routing Practices: Lay the armored cable along structural channels using insulated cable clamps. Maintain a minimum bend radius of 25.4 mm (1.0 in) to prevent internal coaxial conductor damage.
3. Connector Protection: Click the miniature coaxial connector firmly until the internal detent engages, then slide the rubber connector boot completely over the metal joint to block atmospheric moisture.
4. Grounding Braid Verification: Isolate the armored casing from ground loops along the cable run, and ensure ground termination occurs exclusively at the Proximitor mounting plate connection terminal.