330191-00-33-90-05 Bently Nevada 3300 XL 8mm ETR Proximity Probe

Overview

The 330191-00-33-90-05 is an Extended Temperature Range (ETR) 3300 XL 8 mm Proximity Probe, precision-engineered by Bently Nevada. Designed to withstand the rigorous demands of extreme thermal environments, this probe features a reinforced PPS plastic tip and a robust stainless steel case. With patented TipLoc and CableLoc assembly technologies, it offers superior pull-strength and structural integrity for critical asset protection.

Configuration Breakdown

• Base Model: 330191 — 3300 XL 8 mm ETR Proximity Probe
  • Unthreaded Length: -00 — 0.0 inches
  • Case Length: -33 — 3.3 inches
  • Total Length: -90 — 9.0 meters
  • Approval: -05 — Multiple Approvals

Engineering Specifications

• Thread Type: 3/8-24 UNF-2A
• Nominal DC Resistance: 9.87 ± 0.90 Ω (at 9.0m length)
• Temperature Rating: Up to +232°C (T1 Class)
• Case Material: AISI 303/304 Stainless Steel
• Tensile Strength: 330 N (75 lbf) probe-to-lead
• Environmental: Viton® O-ring seal for differential pressure

Comparison & Selection Guide

Compare with: 330191-00-08-05-00

• Differences: The 330191-00-08-05-00 offers a shorter 0.8" case length compared to the 3.3" case of the 330191-00-33-90-05.
• Selection Advice: Choose the 3.3" case if your application requires deeper reach into turbine housing. Ensure calibration matches the 9.0m cable impedance.

Global PLC Spare HUB's Insight

Our engineering team categorizes the 330191-00-33-90-05 as the ultimate solution for high-temperature compressor environments where standard probes succumb to thermal degradation. The ETR (Extended Temperature Range) capabilities, combined with the optional FluidLoc cable, make this unit exceptionally reliable in environments prone to oil migration or heavy vibrational stress.

Applications & Diagnostics

• Target Equipment: Industrial steam turbines, high-pressure gas compressors, and gearboxes.
• Diagnostic Capability: Real-time monitoring of rotor position, shaft vibration (radial), and machine speed.
• Durability: Optimized for heavy industrial usage, specifically where physical abuse to cables is a concern due to vibration.

Logistics & Quality Assurance

• Shipping: Expedited global delivery via FedEx, UPS, and DHL.
• Dispatch: Orders are processed and shipped within 24-48 hours.
• Warranty: Includes a 12-month factory quality performance warranty.

Technical FAQ

Q: What are the primary advantages of the "ETR" (Extended Temperature Range) designation?
A: ETR probes utilize specialized internal bonding and higher-grade materials, allowing them to operate reliably in ambient temperatures up to +232°C, far exceeding standard probe limits.

Q: Is the 9.0-meter cable length a limitation for signal performance?
A: While 9.0m is standard for long-distance runs, ensure the Proximitor sensor calibration matches the cable impedance to mitigate signal rolloff at high vibration frequencies.

Q: Why is the CableLoc design critical for high-vibration applications?
A: CableLoc prevents the probe lead from breaking at the connector junction under constant high-frequency vibration, a common failure point for cheaper sensors.

Q: Can this probe be installed in hazardous zones without extra equipment?
A: No, it must be used with authorized zener barriers or galvanic isolators per the system drawings to maintain the required Intrinsic Safety (IS) certification.

Q: Selection Advice: When should I choose the "FluidLoc" cable option?
A: If your machine has a history of oil leaking through the conduits, the FluidLoc cable is an essential preventive measure to stop fluid from entering your sensitive electronics junction box.

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