Description

The Bently Nevada 330104-00-05-50-11-00 serves as a specialized 330104 Proximity Probe configuration designed to measure non-contacting shaft displacement, radial vibration, and phase reference (Keyphasor) targets across critical rotating machinery.

While the 330103 series relies on metric threads, the 330104 series utilizes standard English 3/8-24 UNF threads. This specific model integrates an extended 5.0-meter fluid-resistant cable with an integrated connector protector sleeve.

Suffix Breakdown & Model Matrix

The alphanumeric suffix combination defines the specific mechanical, electrical, and environmental configurations of this hardware assembly:

• 330104: Base model for 3300 XL 8 mm proximity probe with 3/8-24 UNF thread, unarmored.
• 00: Unthreaded Length Option (00 = 0.0 inches).
• 05: Overall Case Length Option (05 = 5.0 inches).
• 50: Total Length Option (50 = 5.0 meters / 16.4 feet).
• 11: Connector and Cable-Type Option (11 = Miniature coaxial ClickLoc connector with connector protector, fluid-resistant FluidLoc coaxial cable).
• 00: Agency Approval Option (00 = Not required / no approvals).

Hardware Specifications

Eddy-Current Probe Scaling & Rotor Dynamics

During operation, high-frequency RF fields generated by the Proximitor loop penetrate the target surface. Consequently, accurate calibration requires an exact eddy-current probe scaling profile that matches the metallurgy of the shaft. To establish a stable operating baseline for rotor dynamics tracking, field engineers must validate that the gap voltage achieves a target value of -10 VDC at the geometric center of the linear zone. Furthermore, tight winding geometries optimize cross-talk suppression, thereby preventing electromagnetic interference between adjacent multi-axis probes installed within the same bearing housing block.

Frequently Asked Questions

Q: Can this 5.0-meter total length probe connect directly to a 5.0-meter Proximitor sensor?

A: Yes. Because this probe features an integrated 5.0-meter total length option, it connects directly to a standard 5.0-meter Proximitor sensor without requiring an intermediary extension cable. Adding an extension cable to this loop configuration will introduce severe scaling and calibration errors.

Q: What protection advantages does the -11 cable/connector option offer?

A: The -11 configuration features a fluid-resistant coaxial cable core that prevents oils or chemical process fluids from wicking through the cable interior. Additionally, it provides an integrated connector protector sleeve that shields the ClickLoc coupling from humidity, oil splash, and particulate contamination within the machine case.

Field Installation Guidelines

• Mechanical Clearance: Maintain a minimum counterbore clearance of 2 or more probe tip diameters (16 mm or 0.63 inches minimum) to avoid side-loading errors from surrounding metal structures.
• Torque Limits: When installing the 3/8-24 UNF threaded case into the mounting bracket, do not exceed the maximum allowable tightening torque of 16.3 N·m (144 in·lb).
• Connector Protector Deployment: Clean the gold-plated ClickLoc connector faces of any residue and twist until it clicks into place. Afterward, firmly slide the built-in protector sleeve completely over the junction to seal it.
• Shielding Protocols: Leave the coaxial cable shield floating at the probe end. Instead, execute terminal grounding solely at the instrument rack or the Proximitor isolation housing ground terminal block to eliminate ground loops.