Product Introduction
When upgrading or replacing aging proximity probes in critical rotating machinery, the Bently Nevada 330709-000-080-90-12-00 3300 XL 11 mm Proximity Probes delivers proven performance. This probe is part of the renowned 3300 XL series, engineered for precise shaft vibration and position measurements. With a 9.0-meter cable and M16x1.5 thread, it ensures reliable data acquisition in harsh industrial environments.
Technical Specifications
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Probe dc Resistance: 8.5 ± 1.1 ohms (RPROBE at 9.0 m)
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Probe Tip Material: Polyphenylene sulfide (PPS)
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Probe Case Material: AISI 304 stainless steel (SST)
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Probe Cable: 75 Ω triaxial, FEP insulated, total length 9 meters
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Operating Temperature: -52°C to +177°C (-62°F to +351°F)
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Probe Case Thread: M16x1.5, maximum engagement 24 mm
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Case Torque (Recommended): 21.1 N·m (187 in·lb)
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Connector Type: Miniature coaxial ClickLoc with FluidLoc cable
Real-World Applications
The Bently Nevada 330709-000-080-90-12-00 is ideal for monitoring radial vibration and axial position on turbines, compressors, pumps, and motors. Its 9-meter cable allows flexible installation without compromising signal integrity. The high-temperature rated PPS tip withstands demanding environments, making it suitable for power generation, oil & gas, and petrochemical plants. Replacing older probes with this exact model ensures backward compatibility with existing 3300 XL monitoring systems.
Installation & Setup Guidance
For optimal performance, mount the probe in a clean, properly tapped M16x1.5 hole. Ensure the thread engagement does not exceed 24 mm. Tighten the probe case to the recommended torque of 21.1 N·m. Use only finger-tight torque on the coaxial ClickLoc connector (max 0.565 N·m). Maintain a minimum flat target diameter of 30.5 mm to avoid cross-talk. The minimum bend radius of the cable is 25.4 mm—avoid tight bends that may damage the triaxial construction.
Selection Guide & Purchasing Advice
Before purchasing, verify your system requirements: this unit has a 9.0-meter total length with 0 mm unthreaded length and 80 mm overall case length. The connector is a miniature coaxial ClickLoc suitable for standard Bently Nevada extensions. Order exact replacements from UBEST Automation (ubest101) to ensure genuine Bently Nevada quality. Always check the agency approval requirement—this unit is specified as 'Not Required' for approvals.