330101-00-55-05-02-05 Bently Nevada 3300 XL 8mm Probe Sensor In Stock

Product Overview

The 330101-00-55-05-02-05 is an industrial eddy current proximity probe from the 3300 XL 8 mm Series engineered by Bently Nevada. Designed for non-contact shaft position, radial vibration, and axial displacement measurements, this sensor delivers continuous micro-inch resolution on high-speed rotating machinery.

Constructed with an AISI 303/304 stainless steel threaded body (3/8-24 UNF) and molded polyphenylene sulfide (PPS) tip encapsulation, the 330101-00-55-05-02-05 features patented TipLoc and CableLoc bonding technologies to withstand extreme physical abuse, mechanical shear, and high-vibration operational environments.

Configuration Breakdown

Part number coding scheme for the 330101-00-55-05-02-05 proximity sensor assembly:

• 330101 — 3300 XL 8 mm Proximity Probe (3/8-24 UNF thread, unarmored)
  • -00- Unthreaded Length Option: 0.0 inches (Fully threaded probe body)
  • -55- Overall Case Length Option: 5.5 inches overall thread case length
  • -05- Total Length Option: 0.5 meter (1.6 feet) integrated cable reach
  • -02- Connector & Cable Option: Miniature coaxial ClickLoc connector, standard cable
  • -05- Agency Approval Option: CSA, ATEX, and IECEx multi-certified hazardous area approvals

Technical Specifications

Installation & Gap Setting Guidelines

• Radial Vibration Gap Voltage: Adjust probe gap until Proximitor DC output measures -9.0 Vdc (~1.27 mm / 50 mils gap offset).
• Mounting Hole Preparation: Tap machine casing to 3/8-24 UNF-2B threads; verify internal threads are free of metal filings prior to insertion.
• Locknut Torque Limit: Torque 3/8-24 mounting locknut to 8.5 N·m (75 in·lb) to avoid casing deformation or thread stripping.
• Connector Sealing: Apply silicone self-fusing tape or neoprene connector protectors over the ClickLoc junction to prevent oil contamination.
• Cable Routing Protection: Ensure minimum bend radius of 25.4 mm (1.0 in) for standard coaxial leads along machine frame channels.

Field Calibration & Resistance Testing Procedures

• DC Resistance Verification: Measure resistance across ClickLoc center pin and outer ring; reading must fall between 6.95 Ω and 7.95 Ω at ambient room temperature.
• Linearity Verification: Use a spindle micrometer fixture to step target gap in 0.25 mm (10 mil) increments across the 80 mil span to confirm 200 mV/mil output slope.
• Pressure Seal Check: Verify internal Viton O-ring integrity if installed across machine oil walls to prevent process fluid weeping.

System Compatibility & Field Wiring Integration

The 330101-00-55-05-02-05 matches directly with 3300 XL 8 mm extension cables (4.5m system total length) and 3300 XL Proximitor Sensors. Signal connections route to Bently Nevada 3500 monitoring racks via 3-conductor shielded triad field cables (16 to 24 AWG) up to 305 meters (1,000 feet).

Mechanical Durability & Environmental Protections

• Tip Integrity (TipLoc): Molded PPS encapsulation resists chemical erosion from synthetic lube oils and high-velocity gas flows.
• Relative Humidity Immunity: Maintains less than 3% change in Average Scale Factor (ASF) after 56 days of exposure to 93% humidity per IEC 68-2-3.
• Mechanical Anchor (CableLoc): Cable outer jacket resists 330 N (75 lbf) axial pull force without signal loss or lead detachment.

Model Selection & Selection Comparison

Matching overall case length, thread engagement depth, and total cable reach prevents physical installation mismatches. Compare these model specifications:

• Target Model: 330101-00-55-05-02-05
  • Unthreaded Length: 0.0 inches (Fully threaded 3/8-24 casing)
  • Case Length: Long 5.5-inch threaded body (-55) for deep housing bosses
  • System Reach: 0.5 meter (1.6 ft) lead for internal machine casing terminal connection
  • Agency Approval: Multi-certified CSA/ATEX/IECEx intrinsically safe rating (-05)
• Alternative Variant: 330101-00-18-10-12-05
  • Unthreaded Length: 0.0 inches (Fully threaded 3/8-24 casing)
  • Case Length: Compact 1.8-inch threaded body (-18) for shallow mounting brackets
  • System Reach: 1.0 meter (3.3 ft) lead with FluidLoc cable armor (-10/-12)
  • Agency Approval: Multi-certified CSA/ATEX/IECEx intrinsically safe rating (-05)

Selection Guidance: Select the 330101-00-55-05-02-05 when passing through deep bearing housing walls or thick machine casings requiring a 5.5-inch thread reach. Choose the 330101-00-18-10-12-05 variant for short external bracket mounts or applications requiring oil-blocking FluidLoc armored cabling.

Packaging & Commercial Terms

• Condition: 100% Brand New & Original in factory protective packaging.
• Warranty: Covered by a 12-Month factory defect warranty.
• Shipping Methods: Fast global express delivery via DHL, FedEx, or UPS.
• Dispatch Lead Time: In-stock items ship within 24 to 48 hours following payment confirmation.

Industrial Applications & Fault Diagnostics

Plant vibration engineers deploy 3300 XL 8 mm Series probes across critical rotating machinery platforms:

• Steam & Gas Turbines: Measures shaft radial dynamic position and keyphasor speed reference pulses.
• Multistage Boiler Pumps: Tracks thrust collar axial position to prevent internal runner-to-stator rubbing.
• Centrifugal Gas Compressors: Real-time shaft orbit dynamic profiling and oil film instability tracking.
• Heavy Industrial Motors: Continuous monitoring of sleeve bearing wear and rotor centerline movement.

Global PLC Spare HUB's Insight

In turbine overhaul projects, technicians frequently damage probe tails by twisting the lead wire during insertion into the mounting boss. Because eddy current probe leads contain precision miniature coaxial cables, twisting stresses the ClickLoc connection and alters system capacitance, shifting calibration curves.

During a recent petrochemical plant turnaround, a customer experienced erratic gap readings after installing replacement probes. Our technical team confirmed the leads had been twisted during insertion, cracking internal insulation. Replacing the units with fresh 330101-00-55-05-02-05 probes and using a free-swiveling probe wrench restored precise 200 mV/mil scale factor compliance. Always disconnect the extension cable before rotating the probe body during gap adjustment.

Frequently Asked Questions (FAQ)

Q: What is the purpose of the ClickLoc connector mechanism on the probe lead?

A: The ClickLoc design provides a tactile locking mechanism that prevents coaxial connections from vibrating loose under severe machine operating conditions.

Q: Can exposing the probe tip to sub-zero temperatures damage the pressure seal?

A: Operating the probe below -34°C (-30°F) may cause the internal Viton sealing ring to harden, potentially compromising the differential oil seal between probe tip and casing.

Q: What total system length must I maintain when pairing this probe with extension cables and Proximitor sensors?

A: The combined length of the probe lead and extension cable must equal either exactly 5.0 meters or 9.0 meters to match the calibrated electrical length of the Proximitor Sensor.

Q: How do I identify if a probe has sustained internal coaxial lead damage?

A: Measure the DC resistance across the ClickLoc center pin and outer shield. A reading outside the nominal 7.45 ± 0.50 Ω specification (for a 0.5m lead) indicates an open or shorted coaxial core.

Q: How do I determine whether to specify a 0.5-meter probe lead or a 1.0-meter lead during initial system design?

A: Measure the physical path from the probe mounting boss to the external junction box. If the internal junction box sits directly outside the bearing housing wall, a 0.5m lead minimizes excess wire bundle clutter inside the enclosure.

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