330905-00-11-05-02-00 Bently Nevada 3300 NSv Proximity Probe

Product Overview

The Bently Nevada 3300 NSv 330905-00-11-05-02-00 proximity probe provides non-contact displacement measurements in tight spatial environments.

Engineered with narrow side-view characteristics, this eddy current transducer suppresses side-target interference in compact bearing housings.

Model Configuration Breakdown

• 330905 : 3300 NSv Probe, M10 x 1 thread, unarmored construction
  • 00 : Unthreaded Length Option — 00 mm
    • 11 : Overall Case Length Option — 110 mm
      • 05 : Total Length Option — 0.5 meter (20 inches)
        • 02 : Connector & Cable Option — Miniature coaxial ClickLoc connector, standard cable
          • 00 : Agency Approval Option — Not required

Technical Specifications

Model Selection & Technical Comparison

Selecting appropriate probe geometry requires measuring internal reach dimensions and target face clearance.

Evaluate the structural differences between the 330905-00-11-05-02-00 and the 330905-00-09-05-02-00 variant:

• Case Length Variation: Option 11 features a 110 mm threaded barrel, whereas Option 09 provides a shorter 90 mm barrel length.
• Application Depth Reach: The 110 mm length allows installation through thick machine casings or oil-seal plates without internal extension sleeves.
• Selection Rule: Choose the 110 mm model when mounting directly through external port walls; select the 90 mm counterpart for shallower mounting flanges to prevent internal cavity interference.

Installation & Torque Guidelines

• Tighten probe case body to a recommended torque of 7.5 N·m (66 in·lb) when securing into threaded ports.
• Never exceed maximum rated case torque of 22.6 N·m (200 in·lb) across the first three threads.
• Ensure miniature coaxial ClickLoc connector coupling is adjusted to finger tight, never exceeding 0.56 N·m (5 in·lb).
• Observe a strict minimum cable bend radius of 25.4 mm (1.0 in) along the FEP jacket.

System Compatibility & Field Wiring

• Fully compatible with 3300 NSv Proximitor Sensors and extension cables.
• Electrically replaces older legacy 3300 RAM proximity probe hardware directly.
• Connects to monitoring racks using 3-conductor shielded triad cable (16 to 24 AWG or 18 to 23 AWG with ferrules).
• Supports field wiring distances up to 305 meters (1,000 feet) without altering dynamic signal fidelity.

Suitable Equipment & Application Scenarios

• Axial position and radial vibration sensing in centrifugal process gas compressors.
• Shaft motion monitoring on small-diameter rotors where target clearance is under 13 mm.
• Vibration analysis on high-speed turbochargers requiring enhanced fluid-chemical resistance.
• Keyphasor timing speed measurements on counter-bored gear shafts.

Diagnostic Capabilities

• Narrow side-view field profile eliminates counter-bore side-wall interference false signals.
• Polyphenylene sulfide (PPS) tip construction prevents chemical degradation from aggressive process fluids.
• Monitors gap voltage linearity from -1 Vdc to -13 Vdc to verify mechanical alignment.
• Internal Viton O-ring isolates differential pressure between tip assembly and mounting case.

Package Contents, Logistics & Warranty

Global PLC Spare HUB's Insight

Field engineers frequently request the 3300 NSv series for tight machinery geometry where standard 8mm probes experience side-wall loading errors.

When installing the 110 mm barrel option, verify that internal cable twisting does not occur during rotation into the port.

Always perform ClickLoc connection locking by hand; using pliers on miniature coaxial connectors strips internal pins and alters probe DC resistance.

Proper gap calibration to 1.0 mm (40 mils) ensures optimal dynamic range across the entire 1.5 mm linear output scale.

Frequently Asked Questions

Question: What operational advantage does a narrow side-view design offer in tight bearing housing installations?

Answer: It prevents probe magnetic field distortion caused by adjacent metal walls inside narrow counter-bores.

Question: Why is hand-tightening mandatory for ClickLoc coaxial probe connectors during field assembly?

Answer: Applying mechanical tools crushes the miniature coaxial pin structure, causing signal attenuation and open-circuit errors.

Question: How does target shaft diameter affect measurement scale factor precision on small machines?

Answer: Targets smaller than 13 mm alter scale factor; narrowing the physical gap helps compensate for surface curvature effects.

Question: What chemical resistance benefit does PPS tip construction provide over older RAM series probes?

Answer: Polyphenylene sulfide prevents material breakdown when exposed to synthetic lubricants and corrosive gas compressor fluids.

Question: How can technicians verify probe circuit integrity prior to powering the Proximitor sensor?

Answer: Measure resistance across the center and outer conductor; a normal 0.5m unit reads approximately 4.0 Ohms.

Tags