Description

Fully threaded M10x1 metric probe body with a 70 mm overall case length and a 1.0 m standard coaxial cable specifies the 330905-00-07-10-02-00 configuration of this Bently Nevada 3300 NSv Proximity Probe. This proximity probe is designed as an unarmored sensor used within the 3300 XL NSv Proximity Transducer System to provide non-contact displacement measurements. It is optimized for installations with tight mechanical clearances, reduced sideview targets, or small counterbores where standard 5 mm and 8 mm probes cannot fit due to physical spatial constraints.

By utilizing eddy-current measurement principles, the probe operates reliably in challenging industrial environments. This configuration pairs with a 330930-series extension cable and a 330980 Proximitor Sensor to deliver a linear voltage output directly proportional to the gap distance. Unlike armored variants, this unarmored design offers greater routing flexibility for internal machinery wiring where mechanical abrasion from exposed casing edges is not a primary concern.

Features

• Thread Size: M10x1 metric thread configuration without stainless steel armor.
• Unthreaded Length Option (AA): 00 option code indicates 0 mm unthreaded length (fully threaded body).
• Overall Case Length Option (BB): 07 option code specifies 70 mm total case length.
• Total Length Option (CC): 10 option code provides a 1.0 meter (39 in) integrated probe cable.
• Connector Type Option (DD): 02 option code includes a miniature coaxial ClickLoc connector with standard 75 ohm cable (no connector protector).
• Agency Approval Option (EE): 00 option code is designed for non-hazardous general-purpose applications.
• Enhanced Sideview Performance: Provides reliable eddy-current measurements over a 1.5 mm (60 mils) linear range.

Applications

This proximity probe is typically deployed in power generation, oil and gas, and petrochemical facilities. Specific applications include:

• Radial vibration and axial position monitoring on high-speed fluid-filmed bearing machinery.
• Non-contact displacement measurement on small-bore centrifugal air compressors, refrigeration compressors, and process gas compressors.
• Machinery protection configurations with restricted sideview clearance or where target shafts are smaller than 51 mm (2.0 in).
• Thrust position and phase reference (Keyphasor) signal generation in constrained spaces.

Ordering Information

Technical Specifications

Connections and Interfaces

Installation Guidelines

• Gap Setting: Calibrate the probe gap using a digital voltmeter measuring the Proximitor output. The recommended physical gap of 1.0 mm (40 mils) corresponds to approximately -9.0 Vdc.
• Connector Care: Keep the ClickLoc coaxial connector clean, dry, and free of dirt, oil, or grease during installation. Maintain tight physical contact but avoid over-tightening.
• Bending Radius: Ensure the unarmored standard cable is routed with a safe bend radius (minimum 25.4 mm or 1.0 inch) to prevent physical kinking or internal damage to the shield.
• Isolation: Verify that the probe housing is electrically isolated from system ground when installed, preventing potential electrical interference or ground loop noise.

Compliance and Certifications

• Electromagnetic Compatibility (EMC): Complies with European EMC Directive 2014/30/EU, standards EN 61000-6-2 (Immunity) and EN 61000-6-4 (Emissions).
• RoHS: Complies with European Directive 2011/65/EU and China RoHS (15-year Environment Friendly Use Period).
• Functional Safety: SIL 2 capable (HFT = 0) and SIL 3 capable (HFT = 1) when properly integrated into safety-instrumented systems.