Bently Nevada 330104-06-25-05-02-00 3300 XL 8 mm Proximity Probe, Metric

Product Overview

When machinery vibration threatens uptime, the Bently Nevada 330104-06-25-05-02-00 3300 XL 8 mm proximity probe delivers precise displacement measurements. This metric probe, part of the trusted 3300 XL series, uses an M10x1 thread with armor for robust installation in harsh environments. Designed for radial vibration and position monitoring, it provides a linear range of 2 mm (80 mils) starting at approximately 0.25 mm (10 mils) from the target, with a recommended gap setting of -9 Vdc for radial vibration applications.

Technical Specifications Breakdown

The 330104-06-25-05-02-00 features a polyphenylene sulfide (PPS) probe tip and an AISI 303 or 304 stainless steel case, ensuring durability in demanding conditions. Its total length is 0.5 meter (1.6 feet), with an unthreaded length of 60 mm and an overall case length of 250 mm. The nominal probe DC resistance is 7.45 ± 0.50 ohms at 0.5 m length. Operating temperature ranges from -52°C to +177°C for the standard probe, with extended range options for the tip up to +218°C and cable up to +260°C. Relative humidity testing shows less than 3% change in Average Scale Factor (ASF) after 56 days at 93% humidity per IEC 68-2-3.

Industry Applications

This proximity probe excels in rotating machinery monitoring, such as turbines, compressors, and pumps, where early detection of shaft vibration prevents catastrophic failures. In oil and gas facilities, its intrinsic safety approvals (Class I, Zone 0: AEx/Ex ia IIC T5...T1 Ga when installed with zener barriers per drawing 141092) make it suitable for hazardous areas. The probe's pressure seal, using a Viton O-ring, handles differential pressure between tip and case, though it is not pressure tested before shipment.

Installation & Setup Guidance

Proper installation is critical for accurate readings. The probe case thread is M10x1 with a maximum thread engagement of 15 mm. Field wiring requires 0.2 to 1.5 mm² (16 to 24 AWG) cable, preferably a 3-conductor shielded triad, with a maximum length of 305 meters (1,000 feet) between the probe and the 3300 XL Proximitor Sensor. The miniature coaxial ClickLoc connector simplifies cable attachment. Ensure the target surface is clean and the gap is set to approximately 1.27 mm (50 mils) for radial vibration measurements.

Maintenance & Reliability

To maximize probe lifespan, avoid exposing it to temperatures below -34°C (-30°F) as this may cause premature pressure seal failure. Regular inspection of the cable and connector for damage is recommended. The probe's stainless steel case resists corrosion, and the PPS tip withstands chemical exposure. For extended temperature applications, verify the probe variant supports up to +218°C at the tip and +260°C at the cable. Always follow the manufacturer's guidelines for periodic testing.

Selection Guide & Purchasing Advice

Before ordering the 330104-06-25-05-02-00, confirm your system's thread size (M10x1) and cable length requirements. This model includes a 0.5 m cable with a miniature coaxial ClickLoc connector. For applications requiring agency approvals, note that this variant is marked "Not required." If you need pressure testing or intrinsic safety barriers, contact the custom design department. plcmatrix.com offers this Bently Nevada probe with expert support to ensure you select the correct configuration for your machinery monitoring needs.