Product Overview

The Bently Nevada 330104-00-07-10-02-05 represents the pinnacle of non-contacting displacement sensing technology, specifically designed for reverse mount applications. As a vital component of the 3300 XL 8mm series, this probe provides critical data for radial vibration, axial thrust, and speed measurements on high-speed rotating assets.

Engineered to thrive in the turbulent environments of steam turbines, centrifugal compressors, and pumps, this sensor translates mechanical motion into precise electrical signals. By utilizing high-frequency eddy current technology, it maintains absolute signal integrity even when submerged in hydraulic fluid or exposed to extreme thermal cycling. Integrating this probe into your Bently Nevada 3500 rack ensures your facility meets API 670 standards for machinery protection, effectively eliminating the risk of catastrophic mechanical failure.

Model Suffix & Hardware Decoding

Configuration Breakdown

This specific model number defines a precise physical architecture required for specialized mounting scenarios where traditional front-thread probes are inaccessible.

Unthreaded Length (-00)

The 00 suffix indicates no unthreaded portion on the probe case. This streamlined geometry facilitates full insertion and maximum flexibility within reverse-mount probe housings or sleeves.

Case Length (-07)

A 0.7-inch total case length provides a compact footprint. This "Short Case" design is essential for installations with limited clearance behind the bearing housing or within tight internal machine cavities.

Total Cable Length (-10)

This designates a 1.0-meter (3.3 feet) integral cable. It serves as the primary lead that connects to the 3300 XL extension cable, ensuring the total system length remains calibrated to the Proximitor’s requirements.

Connector & Protection (-02)

Equipped with a miniature coaxial connector and a factory-installed connector protector. This ensures the junction remains hermetically sealed against oil, moisture, and particulate contamination.

Agency Approvals (-05)

The -05 suffix provides Multiple Approvals (ATEX, IECEx, CSA). This certification guarantees safe operation in Class I, Div 1 and Zone 0 hazardous areas when deployed with appropriate intrinsic safety barriers.

Technical Specifications

Precision Commissioning Guide

Mechanical Clearance and Gap

Always set the initial gap using a calibrated multimeter. Target a quiescent gap voltage of -10.00 VDC at the Proximitor output for radial vibration. For reverse mount probes, verify the integrity of the mounting sleeve threads to prevent cross-threading during blind installations.

Target Material and Surface Finish

The 3300 XL system is factory-calibrated for AISI 4140 steel. If your shaft material differs (e.g., stainless steel or inconel), you must apply a Correction Factor. Ensure the target area is free from "mechanical runout" and surface imperfections like scratches or magnetism, which can induce false vibration peaks.

Cable Management

Maintain a minimum bend radius of 25.4 mm (1.0 inch). Use stainless steel flexible conduit for the lead cable to protect against mechanical abrasion and high-velocity oil spray within the bearing housing.

Industrial Integration Performance

Unmatched Thermal Stability

The 3300 XL 8mm probe features patented Tip-to-Case bonding. This proprietary construction prevents the internal coil from shifting during extreme temperature swings, ensuring the DC gap voltage remains stable and prevents "nuisance trips" in your DCS.

Seamless TSI Interconnectivity

This sensor integrates natively with Bently Nevada 3500/40M or 3500/42M monitors. The high-fidelity analog output is easily mirrored to Honeywell Experion PKS or Siemens PCS7 systems for comprehensive plant-wide visualization and predictive maintenance.

Ruggedized Signal Path

Gold-plated ClickLoc connectors provide a low-impedance electrical path that resists oxidation. The mechanical locking mechanism is tested to withstand the high-frequency vibration profiles of heavy-duty gas turbines without signal dropouts.

Logistics and Supply Chain

Global Express Fulfillment

Standard processing ensures dispatch within 2-7 days when payment finish. We utilize premium air freight via DHL, FEDEX, or UPS to minimize lead times for critical outages and emergency spares.

Secure Technical Packaging

All probes are shipped in original manufacturer anti-static industrial packaging. We implement high-density foam bracing and moisture-proof over-wrapping to guarantee that the precision-ground probe tip remains flawless during international transit.

Technical Support & FAQ

Q1: What defines the "Reverse Mount" 330104 versus the standard 330101?

A1: The 330104 is designed to be threaded through the mounting bracket from the inside or through a specialized sleeve, whereas the 330101 is threaded in from the outside. The 330104 lacks the external hex nut found on standard probes.

Q2: Can I use this 1.0m probe with a 9.0m extension cable?

A2: No. This probe is calibrated for a total system length of either 5.0 or 9.0 meters. If you have a 1.0m probe, you must use a 4.0m extension cable for a 5m system, or an 8.0m extension cable for a 9m system.

Q3: How do I identify a failed probe in the field?

A3: Measure the resistance between the center pin and the outer shield of the connector. A healthy 3300 XL 8mm probe typically shows a DC resistance between 4.0 and 11.0 ohms. An "Open" or "Short" circuit indicates a failed coil or damaged cable.

Q4: Is the -05 approval necessary for all sites?

A4: While not physically required for the probe to function, the -05 certification is mandatory for any site classified as a hazardous area to maintain insurance compliance and plant safety standards.