Description

The Bently Nevada 330101-00-09-10-02-05 is a high-performance, non-contact 8 mm proximity probe engineered as part of the 3300 XL monitoring chain. This eddy-current sensor is designed to deliver continuous, reliable radial shaft vibration and axial position measurements in critical rotating machinery. Unlike armored configurations, this specific model features a standard unarmored coaxial cable, a fully threaded body with 0.0 inches of unthreaded length (option 00), a compact 0.9-inch overall case length (option 09), a 1.0-meter total cable length (option 10), and a standard miniature coaxial ClickLoc connector (option 02). Additionally, it is equipped with CSA, ATEX, and IECEx hazardous area approvals (option 05) to ensure safety in volatile industrial environments.

Operating under the eddy-current principle, the probe tip projects a high-frequency electromagnetic field that interacts with a conductive metal target, typically an AISI 4140 steel shaft. As shaft distance changes, the Proximitor sensor translates this physical motion into an accurate DC voltage signal. This sensor is constructed with a rugged polyphenylene sulfide (PPS) tip and a stainless steel body to survive severe conditions of high temperature, moisture, and chemical exposure commonly found in turbine housings and compressor caps.

Features

• 8 mm tip diameter optimized for non-contact displacement and vibration measurements
• Fully threaded 3/8-24 UNF-2A stainless steel casing with 0.0 inches unthreaded length for flush-mount flexibility
• Shorter 0.9-inch case length designed specifically for space-constrained brackets and bearing caps
• Polyphenylene sulfide (PPS) tip material provides excellent sealing against hot oils, moisture, and solvents
• Standard unarmored coaxial cable terminated with a miniature ClickLoc male connector for zero-tool, low-impedance connection
• Certified with comprehensive hazard area approvals, including CSA, ATEX, and IECEx

Applications

This proximity probe is ideal for use in industrial machinery diagnostics and permanent machinery protection systems:

• Steam and gas turbine shaft relative vibration and axial thrust monitoring
• Centrifugal compressor rotor relative shaft position and vibration detection
• Industrial gearboxes, pumps, and high-speed fans bearing clearance monitoring
• Critical rotating machinery protection complying with API 670 standards
• Sub-assembly monitoring in gas plants, petrochemical refineries, and power generation facilities

Ordering Information

Technical Specifications

Connections and Interfaces

This proximity probe is fitted with a miniature ClickLoc coaxial male connector on standard cable. It interfaces directly with standard 3300 XL series extension cables (such as model 330130). The ClickLoc connector is designed with mechanical locking keys to prevent accidental disconnection while ensuring clean signal transmission under high physical vibration.

Installation Guidelines

• Probe Gapping: Set the mechanical gap by referencing the DC output voltage of the Proximitor sensor. A typical midpoint gap of 1.27 mm (50 mils) equates to -10 Vdc on standard 3300 XL systems.
• Cable Bending: Maintain a minimum bend radius of 25.4 mm (1.0 inch) during installation to protect standard coaxial properties and prevent conductor fatigue.
• Conduit Protection: Since this is an unarmored standard cable configuration, always route the cable inside dedicated metal conduits or covered trays to prevent physical abrasion or electromagnetic interference.

Compliance and Certifications

• ATEX: II 1 G Ex ia IIC T5...T1 Ga; II 3 G Ex nA IIC T5...T1 Gc
• IECEx: Ex ia IIC T5...T1 Ga; Ex nA IIC T5...T1 Gc
• CSA: Class I, Div 1, Groups A, B, C, D; Class I, Div 2, Groups A, B, C, D
• CE Mark: Fully compliant with electromagnetic compatibility directives