Bently Nevada 330980-51-05 3300 XL NSv Proximitor Sensor

Description

The 330980-51-05 is a non-contacting 3300 XL NSv Proximitor Sensor designed as an integral component of the 3300 XL NSv Proximity Transducer System. This system is specifically developed for machinery with tight installation constraints or restricted target sizes, such as centrifugal air compressors, refrigeration compressors, and process gas compressors. It excels in applications where counterbore, sideview, or rearview limitations restrict the deployment of standard 5 mm and 8 mm transducer variants. The 330980-51-05 processes input signals to provide precise radial vibration, radial position, axial position, tachometer, and phase reference (Keyphasor) monitoring on fluid-filmed bearing machinery.

Engineered with a compact and thin physical footprint, this Proximitor Sensor is factory configured for high-density 35 mm DIN-rail mounting structures to minimize required enclosure space. It features an Incremental Scale Factor (ISF) of 7.87 V/mm (200 mV/mil) over a 1.5 mm (60 mils) linear range. Equipped with integrated SpringLoc terminal strips, the unit facilitates robust and rapid field connections without needing specialized insertion tools. Additionally, advanced RFI/EMI immunity enables the device to satisfy European CE requirements without requiring specialized shielding or isolated mounting setups.

Features

• Optimizes non-contacting measurement performance for confined machinery spaces and small shaft diameters.
• Thin mechanical profile enables efficient high-density installations on standard 35 mm DIN rails.
• Built-in SpringLoc terminal strips provide reliable, vibration-resistant electrical connections without special tooling.
• High RFI/EMI resistance prevents surrounding high-frequency radio signals from degrading the transducer measurement integrity.
• Internal protection circuitry guards sensitive terminal and connector paths against damage from electrostatic discharge.

Applications

• Centrifugal air compressors
• Refrigeration compressors
• Process gas compressors
• Radial vibration and axial position tracking on small-diameter shafts (under 51 mm)
• Phase reference (Keyphasor) and zero-speed tachometer signal monitoring

Ordering Information

Technical Specifications

Installation Guidelines

• DIN Rail Mounting: Mount securely onto a standard 35 mm DIN rail using the integrated high-density mounting base. Ensure a minimum clearance of 3.05 mm is available to facilitate smooth rail engagement and removal.
• Field Wiring Connections: Insert stripped field wires into the SpringLoc terminals. Supported wire cross-sections range from 0.2 to 1.5 mm2 (16 to 24 AWG), or 0.25 to 0.75 mm2 (18 to 23 AWG) if using wire ferrules. A three-conductor shielded triad cable is recommended.
• Maximum Distance Limit: The maximum permissible cable distance between the Proximitor Sensor and the monitoring rack must not exceed 305 meters (1000 feet).
• Grounding and Shielding: Ensure the sensor body is mechanically isolated from the enclosure ground using appropriate non-conductive components to prevent common-mode noise and ground loops.

Compliance and Certifications

• EMC Directives: Complies with European Community Directive 2014/30/EU, EN 61000-6-2 (Industrial Immunity), and EN 61000-6-4 (Industrial Emissions).
• RoHS: Complies with European Community Directive 2011/65/EU.
• Hazardous Area Approvals: Certified to CSA, ATEX, and IECEx standards for Zone 0/1, Div 1 intrinsically safe installations under option code 05.