330780-50-00 | Bently Nevada | 3300 XL 11 mm Proximitor Sensor

Description

The Bently Nevada 330780-50-00 plays a vital role within the 3300 XL 11 mm Proximity Transducer System, transforming non-contacting gap variation measurements into a 3.94 V/mm (100 mV/mil) electrical output signal. It serves primary measurement functions for dynamic vibration and static displacement on industrial machinery featuring fluid film bearings. The design supports full component-level interchangeability across compatible 3300 XL probes and extension cables, eliminating requirements for individual matching or labor-intensive bench recalibration.

This specific unit features a 5.0-meter (16.4 feet) system length designed for standard panel mounting configurations. Configured with option code 00, it excludes regional safety agency approvals. Housed in a rugged A380 aluminum enclosure, the sensor interfaces seamlessly with modern monitoring platforms and distributed control systems (DCS) to track machinery shaft behavior and long-term mechanical wear.

Features

• Standardized output of 3.94 V/mm (100 mV/mil) for extended linear range displacement monitoring.
• Full interchangeability with compatible 3300 XL 11 mm components without bench calibration.
• Robust A380 aluminum enclosure designed for demanding industrial environments.
• Complete backward compatibility with standard non-XL 3300 system parameters.
• Extended linear measurement span optimized for larger machine clearances and axial movements.

Applications

• Axial (thrust) position measurements on steam turbines
• Ramp differential expansion measurements
• Rod position or rod drop monitoring on reciprocating compressors
• Tachometer and zero speed measurements
• Phase reference (Keyphasor) signal generation

Ordering Information

Technical Specifications

Installation Guidelines

• Panel Mounting: Secure the housing to a flat, rigid panel using appropriate mounting hardware, ensuring sufficient clearance for cable bend radii.
• Power Supply Integrity: Provide a stable negative voltage between -17.5 Vdc and -26 Vdc. Operation at a voltage more positive than -23.5 Vdc can lead to a reduced linear measurement range.
• Cable Routing: Maintain a minimum bend radius of 25.4 mm (1.0 in) for all connected triaxial field cables. Isolate sensor wiring from high-voltage cables to reduce EMI/RFI noise.
• Connector Protection: Keep the miniature coaxial connections clean and dry. Ensure appropriate termination techniques are followed to achieve 100% condensing humidity protection.

Compliance and Certifications

• FCC: Complies with part 15 of the FCC Rules.
• EMC Directive 2014/30/EU: EN 61000-6-2 (Immunity for Industrial Environments), EN 61000-6-4 (Emissions for Industrial Environments).
• RoHS Directive 2011/65/EU
• Functional Safety: SIL 2 (HFT = 0), SIL 3 (HFT = 1).