330140-10-20-12-CN Bently Nevada 3300 XL 8 mm Probe

Product Overview of the 330140-10-20-12-CN

The Bently Nevada 330140-10-20-12-CN is a 3300 XL 8 mm probe without armor. It functions as a non-contact eddy current displacement sensor for rotating machinery. Because the probe uses a thicker encapsulation of the probe coil in the molded PPS plastic tip, it delivers a more rugged construction. The larger body diameter provides a stronger case. Therefore, this probe offers optimal robustness against physical abuse in industrial environments.

Key Specifications and Performance Data

The 330140-10-20-12-CN carries a total length of 2.0 meters (6.6 feet). Its miniature coaxial ClickLoc connector and FluidLoc cable prevent oil leakage through the cable interior. The nominal probe DC resistance from center conductor to outer conductor is 7.88 ± 0.50 Ω. Meanwhile, the Incremental Scale Factor is 7.87 V/mm (200 mV/mil) ± 5% for the standard system. This accuracy holds over the 80 mil linear range from 0°C to +45°C. The deviation from best fit straight line remains less than ±0.025 mm (±1 mil).

• Manufacturer: Bently Nevada
• Product Type: 3300 XL 8 mm Probe without armor
• Total Length: 2.0 meters (6.6 feet)
• Connector: Miniature coaxial ClickLoc
• Cable Type: FluidLoc
• Nominal DC Resistance: 7.88 ± 0.50 Ω
• Incremental Scale Factor: 7.87 V/mm (200 mV/mil) ± 5%
• Probe Tip Material: Polyphenylene sulfide (PPS)
• Case Material: AISI 303 or 304 stainless steel
• Probe Weight: 323 g/m (11.4 oz)

Installation and Environmental Considerations

The 330140-10-20-12-CN operates within a standard probe temperature range of -52°C to +177°C (-62°F to +350°F). However, exposing the probe to temperatures below -34°C (-30°F) may cause premature failure of the pressure seal. The probe seals differential pressure between the tip and case using a Viton O ring. Notably, probes are not pressure tested prior to shipment. For humidity, the probe shows less than a 3% change in Average Scale Factor when tested in 93% humidity for up to 56 days. When installing this probe, verify the connector type and cable routing to maintain signal integrity.

Reliability and Maintenance

Because the 330140-10-20-12-CN uses patented TipLoc and CableLoc designs, it provides a robust bond and 330 N (75 lbf) pull strength. This engineering-grade precision reduces mechanical wear points. For maintenance, inspect the probe tip and cable periodically for physical damage. Additionally, check the connector for contamination. Since the FluidLoc option prevents oil leakage, it supports long-term reliability in oil-lubricated machinery. Always follow the manufacturer's safety manual for inspection intervals.