330141-08-20-02-05 Bently Nevada 3300 XL 8 mm Probe

Case Study: Solving a Turbine Vibration Measurement Challenge

A power generation facility struggled with unreliable vibration readings on a steam turbine. The existing probes failed prematurely due to mechanical stress and oil ingress. The engineering team required a robust, precise solution. They selected the Bently Nevada 330141-08-20-02-05, a 3300 XL 8 mm probe with armor. This probe features a patented TipLoc molding method that provides a more robust bond between the probe tip and body. Additionally, its CableLoc design delivers 330 N (75 lbf) pull strength, securely attaching the cable and tip. The 8 mm probe diameter offers a thicker encapsulation of the probe coil in molded PPS plastic, resulting in a more rugged probe. The larger body diameter also provides a stronger, more robust case, ensuring optimal robustness against physical abuse. This case illustrates how the 330141-08-20-02-05 addresses common failure modes in harsh industrial environments.

Technical Specifications of the 330141-08-20-02-05

The 330141-08-20-02-05 is a 3300 XL 8 mm probe with armor, designed for precise displacement measurement. Its total length is 2.0 meters (6.6 feet), with an overall case length of 0.8 inches. The probe incorporates a Miniature coaxial ClickLoc connector and standard cable. It holds CSA, ATEX, and IECEx approvals, ensuring suitability for hazardous areas. The probe tip is made of polyphenylene sulfide (PPS), while the case is constructed from AISI 303 or 304 stainless steel. The nominal probe DC resistance from center conductor to outer conductor is 7.88 ± 0.50 Ω for the 2.0 m length. The incremental scale factor (ISF) is 7.87 V/mm (200 mV/mil) ±5% for standard 5 or 1 meter systems, and ±6.5% for standard 9 meter systems, including interchangeability error. The deviation from best fit straight line (DSL) is less than ±0.025 mm (±1 mil) for standard 5 or 1 meter systems, and less than ±0.038 mm (±1.5 mil) for standard 9 meter systems. The probe operates and stores within a temperature range of -52°C to +177°C (-62°F to +350°F) for standard probes. Extended temperature range probes offer -52°C to +218°C (-62°F to +425°F) for the probe tip and -51°C to +260°C (-60°F to +500°F) for the probe cable and connector. The probe is designed to seal differential pressure between the probe tip and case using a Viton® O-ring. It exhibits less than a 3% change in Average Scale Factor (ASF) when tested in 93% humidity per IEC standard 68 2 3 for up to 56 days. The probe weight is 323 g/m (11.4 oz).

Key Features and Benefits

• Patented TipLoc molding ensures robust bond between tip and body.
• CableLoc design provides 330 N (75 lbf) pull strength.
• 8 mm probe diameter offers thicker encapsulation for ruggedness.
• Stainless steel case provides strong physical protection.
• CSA, ATEX, IECEx approvals for hazardous environments.
• Viton® O-ring seals differential pressure.

Applications and Use Cases

The 330141-08-20-02-05 excels in turbine, compressor, and pump monitoring. Its robust design suits harsh industrial environments where mechanical stress and oil ingress are concerns. The armor option adds further protection against physical abuse. Because of its precise ISF and DSL, it delivers accurate displacement measurements for condition monitoring systems.

Installation and Maintenance

Install the probe according to Bently Nevada guidelines. Ensure the connector is properly mated. Periodically inspect the probe for physical damage and cable integrity. Verify the probe resistance to detect degradation. Follow the manufacturer's safety manual for maintenance in hazardous areas.

Product Support and Availability

AutoDCSTech supplies the 330141-08-20-02-05 with engineering-grade precision. Contact AutoDCSTech with your exact requirements for precise matching. Please verify current lifecycle status and availability with AutoDCSTech before ordering.