330103-00-25-05-02-00 Bently Nevada 8mm Probe

Product Overview

The Bently Nevada 330103-00-25-05-02-00 is a high-performance 3300 XL 8mm proximity probe, engineered for critical machinery protection and condition monitoring. As a non-contacting displacement sensor, it captures high-precision data on radial vibration, axial position, and shaft speed. This sensor excels in the demanding environments of steam turbines, centrifugal compressors, and heavy industrial pumps.

Technical Configuration

330103 - Unthreaded Length

00 = 0 mm: This configuration features a fully threaded case, ideal for installations with extremely limited clearance or shallow mounting requirements.

Overall Case Length

25 = 250 mm: The AISI 303/304 stainless steel housing extends to 250 mm, providing sufficient depth for reaching through thick machine casings or bearing housings.

Total Cable Length

05 = 0.5 Meter (1.6 Feet): A specialized pigtail length designed for connection to an extension cable, typically used in 5-meter or 9-meter total system configurations.

Connector and Cable Type

02 = Miniature coaxial ClickLoc™ connector: Features the patented gold-plated ClickLoc mechanism that prevents accidental disconnection and maintains signal integrity under high-vibration conditions.

Agency Approval

00 = Not Required: Standard configuration optimized for non-hazardous industrial environments.

Technical Specifications

Installation & Maintenance Guide

Optimal performance relies on precise mechanical gapping and electrical calibration.

Gap Voltage Setting

For standard radial vibration monitoring, set the installation gap to achieve a DC voltage of -9 Vdc. This voltage corresponds to the midpoint of the linear range (approximately 1.27 mm or 50 mils) when using a standard AISI 4140 steel target.

Cable Handling

The 0.5-meter integral cable requires careful routing. Maintain a minimum bend radius of 25.4 mm (1 inch). Avoid using pliers on the ClickLoc™ connectors; finger-tightening is sufficient to engage the locking mechanism and ensure a moisture-resistant seal.

Field Wiring

Utilize shielded triad cable for field wiring between the Proximitor® and the monitoring system. Ensure the shield is grounded at the monitor end only to prevent ground loops that could distort the vibration signal.

Engineering Advantages

The 3300 XL 8mm system provides significant durability advantages over legacy sensors:

• Chemical Resistance: The PPS tip protects against corrosive lubricants and synthetic fluids.
• High Stability: Advanced circuitry within the 3300 XL system minimizes drift caused by temperature cycles during machine startup.
• Universal Compatibility: This probe works seamlessly with both 3300 and 3300 XL Proximitor® Sensors, facilitating easy maintenance and stock management.
• Pressure Integrity: The Viton® O-ring prevents process leakage through the sensor mount, maintaining machine enclosure vacuum or pressure.

Technical FAQs

Q1: Why choose a 0.5-meter probe instead of a 1.0-meter version?

A1: The 0.5m length is ideal for installations where the Proximitor is located in a nearby junction box, allowing the use of a more durable extension cable to complete the 5m or 9m total system length.

Q2: Is this probe compatible with the older 3300 series monitors?

A2: Yes, the 3300 XL 8mm probe is fully backwards compatible with non-XL 3300 series Proximitor® Sensors and monitors, providing an easy upgrade path for aging systems.

Q3: What is the significance of the PPS tip?

A3: Polyphenylene Sulfide (PPS) is a high-performance thermoplastic that resists chemical degradation and maintains mechanical strength at high temperatures, ensuring the probe tip does not deform or crack in harsh environments.