Bently Nevada 330103‑00‑06‑50‑02‑00 — 3300‑XL 8 mm Eddy‑Current Proximity Probe

Description

Bently Nevada 330103‑00‑06‑50‑02‑00 — 3300‑XL 8 mm Eddy‑Current Proximity Probe

Product Overview

The 330103‑00‑06‑50‑02‑00 is an 8 mm eddy‑current proximity probe from Bently Nevada 3300‑XL 5/8 mm transducer family. As the field‑sensing element of non‑contact proximity measurement loops, it works together with matched proximitor sensor and extension cable. The probe captures gap‑dependent impedance changes between probe tip and metallic rotating target and transmits signals back to the proximitor for conditioning. This probe complies with API 670 standards and is extensively applied for vibration, thrust‑position and Keyphasor measurements on turbomachinery and critical rotating assets.

Specific Application Information

This probe serves as the sensing head for standard 3300‑XL 8 mm proximity monitoring systems:

1. Radial shaft vibration measurement: Detect dynamic radial shaft movement for journal‑bearing health diagnosis on turbines, compressors and critical rotating equipment.
2. Axial thrust‑position monitoring: Measure static thrust‑shaft displacement to identify thrust‑bearing wear and failure risk.
3. Keyphasor speed & phase reference: Mounted against a shaft notch to produce tachometer trigger pulses for RPM calculation and rotor phase analysis.
4. System retrofit & spare replacement: Drop‑in field replacement for existing 3300‑XL 8 mm probe loops in operating plants.

330103-00-06-50-02-00

Key Specifications

Main Features

• Standard 8 mm 3300‑XL probe, API‑670 compliant: Fully interoperable with 3300‑XL 8 mm proximitors and extension‑cable family.
• Ultra‑short 6 mm threaded body: Designed for extremely confined mounting holes and shallow counter‑bore installations where longer‑body probes cannot fit.
• Integral 5‑meter pigtail cable: Eliminates need for extension cable in 5‑m total‑system‑length configurations, reduces field coaxial connection points and potential fault sources.
• High temperature resistance: Probe assembly withstands casing temperatures up to +175 °C, suitable for high‑temperature turbomachinery environments.
• Stainless‑steel rugged construction: Resists vibration, shock, oil mist and mild corrosive atmosphere inside turbine and compressor casings.
• 2‑pin Microdot connector: Standard industry interface for mating with extension cable or directly to proximitor input.
• Intrinsic‑safety ratings: Suitable for ATEX / IECEx hazardous classified zones when deployed within complete certified 3300‑XL proximity loop.
• Stable linear characteristic: Maintains accurate measurement performance across the full 2.0 mm linear working zone.

Typical Application Scenarios

• Steam & gas turbine machinery‑protection systems in power‑generation facilities
• Centrifugal compressors for refinery, petrochemical and LNG plants
• Critical large pumps, blowers, fans and fluid‑film‑bearing motors
• Off‑shore platform rotating‑machinery condition‑monitoring loops
• Pulp‑and‑paper, steel‑mill heavy rotating‑equipment safety monitoring
• Sites with shallow counter‑bore / limited axial mounting depth requiring short‑body probe
• Hazardous‑area classified locations requiring ATEX / IECEx intrinsic‑safety certification
• Retrofit and spare‑part replacement for existing 5‑m 3300‑XL 8 mm proximity channels

Related & Recommended Alternative Models

Compatible Components & Accessories

1. 3300‑XL 8 mm extension cables: 330130‑xx‑xx‑00 series, used only when extra cable length is required; strictly calculate total system length (probe 5 m + extension cable) to match proximitor rating.
2. Matched 3300‑XL 8 mm proximitor: 330180‑51‑05 for direct 5 m configuration.
3. Bently Nevada monitor modules: 3500/42M, 3300/12, 3300/15 monitor racks for gap‑voltage acquisition, alarm and trip configuration.
4. Probe mounting accessories: M10×1 lock nut, compression fitting for mechanical fixation on machine casing.
5. Calibration test fixture: Static gap calibration rig for pre‑commissioning performance verification.
6. Torque wrench: For applying specified torque to Microdot connectors during field assembly.

Installation and Configuration Guide

Warning: Installation must be performed by qualified instrumentation technicians. Always refer to original Bently Nevada 3300‑XL official manual as primary authority.

1. Mechanical Probe Mounting
   • Thread the probe into machine casing M10×1 bore hole. Install lock‑nut for position locking after gap adjustment.
   • Ensure probe tip stands perpendicular to metallic shaft target surface; tilt angle will degrade linear measurement performance.
   • Guarantee sufficient mechanical clearance; avoid tip‑to‑shaft collision across full shaft operating excursion.
2. System‑Length Verification
   • This probe integral cable = 5 m. If no extension cable is added, pair only with 5‑m rated proximitor such as 330180‑51‑05.
   • If extension cable is added, sum probe cable length plus extension‑cable length must exactly match proximitor rated total‑system length. Length mismatch will shift scale factor and create measurement error.
   • Torque Microdot connector to manufacturer‑specified torque value; avoid over‑tightening. Never mate / un‑mate coaxial connectors while proximitor power is energized.
3. Signal Routing Requirements
   • Route probe coaxial cable separately from high‑power AC cables, contactors and variable‑frequency drives to minimize EMI interference.
   • Maintain cable bending radius above minimum specification; prevent sharp kinks that damage internal coaxial structure.
4. Commissioning Gap Adjustment
   • Loosen lock‑nut; screw probe in or out to adjust mechanical gap between probe tip and shaft target.
   • Power up proximitor; measure DC gap‑voltage with high‑impedance multimeter. Adjust probe position to mid‑range working point (approx. ‑10 VDC for AISI‑4140 steel).
   • Tighten lock‑nut securely, re‑check gap‑voltage after locking to rule‑out mechanical position shift. Confirm operating point stays inside linear zone (‑1 VDC ~ ‑17 VDC).
5. Monitor Channel Setup
   • Send gap‑voltage signal to Bently monitor channel. Configure scale factor to 7.87 V/mm (200 mV/mil).
   • Set alarm and trip thresholds strictly according to rotating‑machine OEM documentation.
   • Perform loop function test, verify Not‑OK fault indication by simulating probe open‑circuit condition.
6. Maintenance & Troubleshooting
   • Periodically inspect Microdot connector for dirt, corrosion and loose status.
   • Check gap‑voltage drift during machinery turnaround; readjust probe gap if deviation occurs.
   • When Not‑OK status triggers, inspect probe tip damage, coaxial cable breakage or connector failure. The probe is non‑repairable on‑site; replace complete assembly upon hardware failure.
7. Hazardous‑Area Installation Notes
   • For ATEX / IECEx hazardous‑location deployment, comply with full 3300‑XL intrinsic‑safety installation requirements for cable type, grounding and enclosure rating.

Supplementary Remark

330103‑00‑06‑50‑02‑00 is a short‑body 8 mm proximity probe with long integral cable, widely used in turbomachinery spare‑part market. Before field installation, cross‑check part number, thread specification, body length, integral cable length and connector type against project BOM and mechanical drawing requirements.