Product Overview
The Bently Nevada 330101-20-39-10-02-05 is a 3300 XL 8 mm Probe designed for reliable vibration and position monitoring in critical rotating machinery. This industrial automation module features a 3/8-24 UNF thread, a 1.0 meter total length, and a miniature coaxial ClickLoc connector with standard cable. Built with a patented TipLoc molding method and a CableLoc design offering 330 N (75 lbf) pull strength, this probe ensures secure attachment and long-term durability. The 330101-20-39-10-02-05 is manufactured in the USA and comes with CSA, ATEX, and IECEx approvals, making it suitable for hazardous environments.
Technical Specifications
The 330101-20-39-10-02-05 delivers precise performance metrics essential for accurate machinery protection. Key specifications include:
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Linear Range: 2 mm (80 mils), from 0.25 to 2.3 mm (10 to 90 mils)
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Incremental Scale Factor (ISF): 7.87 V/mm (200 mV/mil) ±5% for standard 1-meter systems
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Deviation from Best Fit Straight Line (DSL): Less than ±0.025 mm (±1 mil) for standard 1-meter systems
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Probe Tip Material: Polyphenylene sulfide (PPS)
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Probe Case Material: AISI 303 or 304 stainless steel
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Operating Temperature (Standard): -52°C to +177°C (-62°F to +350°F)
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Probe DC Resistance: 7.59 Ω ± 0.50 Ω
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Extension Cable Capacitance: 69.9 pF/m (21.3 pF/ft) typical
Industry Applications
The 330101-20-39-10-02-05 is ideal for vibration monitoring on turbines, compressors, pumps, and other rotating equipment. Its robust 8 mm design provides thicker encapsulation of the probe coil, offering superior resistance to physical abuse. With a linear range of 2 mm, it delivers accurate radial vibration measurements, helping to prevent unplanned downtime. This probe is also suitable for axial position monitoring, ensuring optimal machine protection in harsh industrial environments.
Installation & Setup Guidance
Proper installation is critical for accurate readings. The 330101-20-39-10-02-05 features a 3/8-24 UNF thread with a maximum thread engagement length of 0.563 inches. Recommended torque for standard forward-mounted probes is 11.2 N•m (100 in•lbf), with a maximum rated torque of 33.9 N•m (300 in•lbf). For the first three threads, use a recommended torque of 7.5 N•m (66 in•lbf) and a maximum of 22.6 N•m (200 in•lbf). Ensure the probe gap is set to -9 Vdc (approximately 1.27 mm or 50 mils) for radial vibration monitoring. Field wiring should use 0.2 to 1.5 mm² (16 to 24 AWG) with a 3-conductor shielded triad cable, and the maximum length between the Proximitor Sensor and monitor is 305 meters (1,000 feet).
Maintenance & Reliability
The 330101-20-39-10-02-05 is designed for long service life with minimal maintenance. The PPS probe tip and stainless steel case resist corrosion and wear. The patented CableLoc design provides 330 N (75 lbf) pull strength, preventing cable detachment. For optimal reliability, avoid exposing the probe to temperatures below -34°C (-30°F) to prevent premature failure of the pressure seal. The probe is designed to seal differential pressure using a Viton® O-ring, and it maintains 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. Regular inspection of the cable and connector is recommended to ensure secure connections.
Buying Guide
When selecting the Bently Nevada 330101-20-39-10-02-05, verify that the probe length and connector type match your application requirements. This model includes a miniature coaxial ClickLoc connector and standard cable, with an overall case length of 3.9 inches and a total length of 1.0 meter. Ensure your system supports the 3300 XL series Proximitor sensors for seamless integration. For guaranteed authenticity and reliable supply, choose PLC Source PRO as your trusted industrial automation parts supplier.