Product Overview
For engineers tasked with protecting critical rotating assets, the Bently Nevada 330101-50-80-10-11-00 offers a proven solution for precise vibration and position measurement. This 3300 XL 8 mm probe, featuring a 3/8-24 UNF thread and without armor, is designed to withstand harsh industrial environments while delivering accurate, repeatable data. Its robust construction, including a patented TipLoc molding method for a stronger bond between tip and body, ensures long-term reliability in applications such as steam turbines, compressors, and pumps.

Technical Specifications Breakdown
Key parameters for the 330101-50-80-10-11-00 are listed below for quick reference:
| Feature | Specification |
|---|---|
| Product Type | 3300 XL 8 mm Probe, 3/8-24 UNF thread, without armor |
| Unthreaded Length | 5.0 in |
| Overall Case Length | 8.0 in |
| Total Length | 1.0 meter (3.3 feet) |
| Connector and Cable Type | Miniature coaxial ClickLoc connector with connector protector, FluidLoc cable |
| Probe Tip Material | Polyphenylene sulfide (PPS) |
| Probe Case Material | AISI 303 or 304 stainless steel (SST) |
| Linear Range | 2 mm (80 mils), from 0.25 to 2.3 mm (10 to 90 mils) |
| Incremental Scale Factor (ISF) – Standard 5 or 1 meter System | 7.87 V/mm (200 mV/mil) ± 5% |
| Probe Temperature Range – Standard | -52°C to +177°C (-62°F to +350°F) |
Industry Applications
In steam turbine installations, the 330101-50-80-10-11-00 provides critical shaft vibration data, enabling early detection of imbalance or misalignment. For centrifugal compressors in oil and gas applications, its FluidLoc cable option prevents oil leakage through the cable interior, maintaining machine integrity. The 8 mm probe's thicker PPS encapsulation offers superior robustness against physical abuse, reducing false trips and unplanned downtime.

Installation & Setup Guidance
Proper installation begins with verifying the recommended gap setting for radial vibration: -9 Vdc (approximately 1.27 mm or 50 mils). Use a 3-conductor shielded triad cable for field wiring, with conductor sizes from 0.2 to 1.5 mm² (16 to 24 AWG). The maximum field wiring length between the 3300 XL Proximitor Sensor and the monitor is 305 meters (1,000 feet). Ensure the probe tip is clean and the mounting surface is free of debris. For optimal performance, avoid exposing the probe to temperatures below –34˚C (–30˚F) to prevent premature pressure seal failure.
Maintenance & Reliability
The 330101-50-80-10-11-00 is designed for minimal maintenance. Its stainless steel case and PPS tip resist corrosion and wear. The patented CableLoc design provides 330 N (75 lbf) pull strength, securing the cable and tip. Periodic inspection of the connector and cable for damage is recommended. The probe's relative humidity tolerance is , with less than a 3% change in Average Scale Factor (ASF) when tested in 93% humidity per IEC 60068-2-3 for up to 56 days.
Compatibility & Integration
This probe is part of the 3300 XL system and is compatible with Bently Nevada 3300 XL Proximitor Sensors and extension cables. The miniature coaxial ClickLoc connector ensures a secure, quick connection. The 330101-50-80-10-11-00 can be ordered with an optional Certificate of Origin (COO) for country-specific approval requirements.
Selection Guide & Purchasing Advice
When selecting a replacement or new probe, verify the thread size (3/8-24 UNF) and total length (1.0 meter). The unthreaded length of 5.0 inches and overall case length of 8.0 inches match specific mounting configurations. Contact AutoDCSTech for current pricing and lifecycle status. As with all precision monitoring components, confirm availability before ordering to avoid project delays.
Availability & Condition at AutoDCSTech
| Part Number | 330101-50-80-10-11-00 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
