Description

The Bently Nevada 330910-06-25-05-11-00 belongs to the specialized 3300 NSv (Narrow Side-View) Proximity Transducer System family. Engineers deploy this metric-threaded probe on industrial rotating machinery with highly restricted installation clearances, such as small centrifugal air compressors, refrigeration systems, and process gas assemblies where standard 8 mm probes cannot fit.

Suffix Part Number Breakdown

The specific option strings map directly to the following structural specifications:

• 330910: Base Model Number for the 3300 NSv Metric Proximity Probe (M10 x 1 threads, with integrated armor).
• 06: 60 mm unthreaded case length.
• 25: 250 mm overall case length.
• 05: 0.5 metre (20 inches) total physical cable length.
• 11: Miniature coaxial ClickLoc connector with factory-installed connector protector and FluidLoc cable.
• 00: No specialized regional agency approvals required (Standard configuration).

Hardware Specifications

Eddy-Current Signal Conditioning and TSI Characteristics

The hardware executes automated eddy-current probe scaling to output a continuous high-frequency signal directly proportional to the physical gap between the probe tip and the observed conductive target. Because the NSv system optimizes its field for narrow areas, it delivers a precise incremental scale factor of 7.87 V/mm (200 mV/mil). This specialized side-view focus allows the system to monitor tight areas accurately, providing a 1.5 mm (60 mils) linear operating range.

Meanwhile, the high-frequency demodulation circuitry tracks rapid rotor dynamics, capturing critical metrics for radial vibration, axial thrust position, and phase reference (Keyphasor) indication. Furthermore, the FluidLoc cable construction blocks internal moisture or lubrication oil paths, which actively prevents process fluids from wicking through the inside of the cable jacket into external termination boxes.

Frequently Asked Questions

Q: What distinct advantage does the -11 connector and cable option bring to this hardware setup?

A: The -11 option provides two distinct layers of protection. First, the FluidLoc cable utilizes internal sealing material to stop process oils from traveling along the cable core. Second, the pre-installed connector protector shields the miniature coaxial joint against ambient fluid films and grounding faults without requiring manual tape application.

Q: How do the 60 mm unthreaded and 250 mm overall case lengths change the installation scope?

A: This variant features the maximum standard case length of 250 mm combined with a 60 mm unthreaded section. Consequently, this geometry allows technicians to insert the probe deep into massive external casings or thick machine brackets while leaving enough clearance to tighten the locknuts securely on the threaded section.

Field Installation Guidelines

• Thread the M10 x 1 metric probe body into the mounting bracket, keeping installation torque within the recommended 5.1 N m (45 in lbf) limit to avoid casing strain.
• Next, adjust the physical position of the probe tip relative to the target shaft until your monitoring instrument records a center gap voltage of approximately -7 VDC to -10 VDC.
• Subsequently, push the male and female ClickLoc connector halves together firmly until the internal spring mechanism clicks into place.
• After that, slide the integrated connector protector sleeve fully over the joined terminal cluster to seal out environment-based fluid films.
• Finally, route the armored 0.5-metre line toward the junction box, ensuring the pathway maintains a minimum static bend radius of 25.4 mm to protect the internal core.