Description

The Bently Nevada 330140-XX-XX-10-02-05, also cataloged as the 330140 3300 XL NSv Proximity Probe, operates as a dedicated hardware component for non-contacting shaft displacement and vibration measurements within a Bently Nevada 3300 XL NSv Proximitor Sensor loop. The device converts physical gaps between the probe tip and the target rotating shaft into linear electrical variations, specifically engineered for applications with restricted installation clearances or small target diameters.

Suffix Breakdown & Model Matrix

The variable characters within the model matrix designate specific physical configurations dictated by the plant engineering requirements:

• First XX (Unthreaded Length Option): Specifies the length of the smooth, unthreaded portion of the probe barrel in increments of 0.1 inches or 10 mm.
• Second XX (Overall Case Length Option): Defines the total length of the case barrel in increments of 0.1 inches or 10 mm.
• 10 (Total Length Option): Designates a total cable length of 1.0 meter (3.3 feet).
• 02 (Connector Option): Indicates a miniature coaxial ClickLoc connector supplied with an integrated connector protector.
• 05 (Agency Approval Option): Mandates multiple international hazardous area certifications including ATEX, IECEx, and North American intrinsic safety approvals.

Hardware Specifications

Machinery Monitoring and TSI Characteristics

The 330140-XX-XX-10-02-05 utilizes specialized eddy-current probe scaling to maintain linear voltage output when monitoring tight counterbores or small-diameter shafts where standard 8mm probes experience severe side-viewing effects. During commissioning, gap voltage validation targets a nominal -10 VDC output at the center of the calibrated linear window. This specialized field alignment allows the proximity loop to feed precise data regarding high-frequency rotor dynamics directly to the machinery protection system, capturing critical metrics for micro-turbines, turbochargers, and high-speed pumps without cross-talk or target distortion.

Frequently Asked Questions

Q: Why does the NSv variant require specific probe selections compared to standard 8mm probes?

A: The NSv probe tip has a tighter magnetic field pattern, which alters the eddy-current probe scaling to function reliably near counterbore walls and on smaller shaft targets without incurring side-viewing errors.

Q: Can this 1.0 meter probe be utilized with a standard 3300 XL 8mm Proximitor sensor?

A: No. The 330140 probe must pair exclusively with a 3300 XL NSv Proximitor sensor and its matching extension cable. Mixing NSv components with standard 8mm components completely disrupts the linear scale factor.

Field Installation Guidelines

• Target Alignment: Center the probe tip over the target area. Ensure a minimum lateral clearance of 4.8 mm (0.19 in) from any adjacent counterbore walls or structural metallic faces to prevent false readings.
• Electrical Gapping: Advance the probe toward the target shaft while applying power to the Proximitor loop. Monitor the Prox Out terminals and lock the probe position when the multimeter displays the precise -10.0 VDC gap voltage target.
• Connector Insulation: Snap the integrated connector protector securely over the ClickLoc coaxial junction to isolate the connection from corrosive cutting fluids, moisture, and lubricating oil.