330103-00-21-05-11-05 Bently Nevada 3300 XL 8 mm Proximity Probe

Product Overview

The 330103-00-21-05-11-05 is a high-precision 3300 XL 8 mm metric proximity transducer system engineered by Bently Nevada. Designed for critical machinery management, this eddy-current displacement sensor accurately measures vibration, axial position, and speed in rotating equipment. Engineers depend on the 330103-00-21-05-11-05 probe to deliver exceptional signal linearity and thermal stability, ensuring early fault detection and preventing catastrophic machine failures in heavy industrial environments.

Part Number Configuration Breakdown

• Base Model (330103): 3300 XL 8 mm Probe, M10 x 1 thread, without armor
• Unthreaded Length Option (-00): Minimum unthreaded length of 0 mm
• Overall Case Length Option (-21): 210 mm total case length
• Total Length Option (-05): 0.5 meter (1.6 feet) cable length
• Connector & Cable Type (-11): Miniature coaxial ClickLoc connector with connector protector and FluidLoc cable
• Agency Approval (-05): CSA, ATEX, and IECEx hazardous area approvals

Technical Specifications

• Brand: Bently Nevada
• Series: 3300 XL Metric Proximity Probe System
• Part Number: 330103-00-21-05-11-05
• Probe Tip Material: Polyphenylene sulfide (PPS)
• Probe Case Material: AISI 303 or 304 stainless steel (SST)
• Probe Thread Size: M10 x 1 with maximum thread engagement of 15 mm
• Linear Measurement Range: 2 mm (80 mils), spanning from 0.25 mm to 2.3 mm (-1 to -17 Vdc)
• Recommended Gap Setting: -9 Vdc (approximately 1.27 mm / 50 mils)
• Nominal DC Resistance: 7.45 ± 0.50 ohms from center to outer conductor (0.5m length)
• Operating Temperature Range: -52°C to +177°C (-62°F to +350°F) standard
• Hazardous Certifications: Intrinsically safe (ia) and non-incendive (nA, ec) ratings for Class I, Zone 0/2 and Division 2 environments

Installation & Integration Guide

• Mounting & Threading: Thread the M10 x 1 probe case carefully into the machine mounting hole, ensuring engagement does not exceed 15 mm.
• Gap Adjustment: Calibrate the static gap voltage to -9 Vdc using a digital multimetre to center the probe within its linear working range.
• Field Wiring: Use 3-conductor shielded triad cable (16 to 24 AWG) up to 305 meters (1,000 feet) between the Proximitor sensor and monitor.
• Seal Protection: Avoid exposing the probe tip to temperatures below -34°C (-30°F) during installation to prevent compromising the Viton O-ring pressure seal.

Commissioning & Maintenance Ease

• ClickLoc Connectors: Secure coaxial connections using the ClickLoc mechanism, which provides tactile feedback to prevent loose wiring and signal degradation.
• FluidLoc Cable Design: Prevents oil and other liquids from wick-traveling through the interior of the coaxial cable into the monitoring enclosure.
• Signal Verification: Regularly check probe DC resistance and gap voltages during routine turnaround inspections to verify transducer health.

Compatibility & Certifications

• Proximitor Compatibility: Designed for seamless integration with 3300 XL 8 mm Proximitor sensors.
• Global Safety Standards: Fully certified for hazardous locations per CSA, ATEX, and IECEx safety frameworks.
• Environmental Resilience: Maintains stable Average Scale Factor (ASF) under high relative humidity conditions up to 93%.

Packing List & Warranty Terms

• Packing List: One (1) 330103-00-21-05-11-05 Proximity Probe with integrated ClickLoc cable and technical documentation.
• Warranty Terms: Protected by a comprehensive 12-month warranty covering manufacturing defects and operational performance.

Shipping & Logistics

• Courier Network: Secure, expedited global delivery managed through premier carriers including FedEx, UPS, and DHL.
• Fulfillment Window: Orders are verified, securely packaged, and dispatched within 24-48 hours to prevent plant downtime.

Typical Application Scenes

• Turbine Supervision: Monitoring radial vibration and shaft whip on steam, gas, and hydro turbines.
• Centrifugal Compressors: Tracking rotor dynamic behavior and journal bearing clearance in high-speed industrial compressors.
• Large Electric Motors: Measuring dynamic displacement and shaft orbit trajectories in critical plant drive trains.

Global PLC Spare HUB Insight & Field Experience

When installing proximity probes like the 330103-00-21-05-11-05 in high-vibration machinery, proper cable routing is critical. Field experience shows that failing to anchor the coaxial cable securely near the probe tip can lead to work-hardening and conductor fatigue from machine micro-vibrations. Always use insulated mounting brackets and maintain separation from high-voltage motor cables to eliminate electromagnetic interference on the Proximitor signal output.

Frequently Asked Questions

What is the purpose of the FluidLoc cable design on this model?

The FluidLoc cable features a special barrier design that stops oil and corrosive liquids from migrating through the cable strands into the junction box or Proximitor housing.

How does the ClickLoc connector simplify probe installation?

The ClickLoc connector provides a positive, lockable snap connection that resists loosening from machine vibration while ensuring consistent electrical contact resistance.

What precautions should be taken when tightening the M10 x 1 probe thread?

Ensure that thread engagement does not exceed 15 mm and use proper torque guidelines to avoid stripping machine threads or distorting the probe tip.

Can this probe be installed in explosive hazardous atmospheres?

Yes, the probe carries CSA, ATEX, and IECEx approvals for intrinsically safe (ia) and non-incendive (nA, ec) installations in Class I, Zone and Division 2 locations.

What key selection criteria should I consider when ordering a replacement 3300 XL probe?

Always verify your exact mechanical thread size (M10 x 1), unthreaded case length, total cable length (0.5m), and hazardous area approval requirements against your machine technical drawings.

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