Product Overview

The Bently Nevada 330105-02-12-10-05-05 is a specialized 3300 XL 8mm Reverse Mount Probe engineered for critical machinery protection where standard forward-mount installation is physically restricted. This high-precision displacement sensor excels in monitoring radial vibration and axial position on high-speed rotating assets like steam turbines, centrifugal compressors, and industrial gearboxes. By utilizing a reverse-mount design, it allows for seamless integration into probe housings or bracketry where the cable must exit from the rear of the mounting point. As a cornerstone of Turbine Supervisory Instrumentation (TSI), it ensures the Bently Nevada 3500 system receives sub-micron accurate data, enabling proactive diagnostics and high-speed emergency shutdowns to prevent catastrophic mechanical failure in volatile industrial environments.

Suffix Variable Matrix

The 330105-02-12-10-05-05 configuration dictates specific mechanical and electrical properties required for field compatibility. The -02 suffix specifies a 3/8-24 UNF thread type. The -12 indicates a 1.2-inch total length, optimized for compact reverse-mount assemblies. The -10 designation defines a 1.0-meter (approx. 3.3 feet) total cable length, suitable for connection to a secondary extension cable. The first -05 suffix confirms the inclusion of a miniature coaxial connector with FluidLoc silicon properties to prevent oil wicking. The final -05 denotes Multiple Agency Approvals, certifying the probe for use in hazardous areas globally under ATEX, IECEx, and CSA standards.

Physical and Electrical Parameters

On-Site Calibration and Setup

Precision commissioning of the 330105-02-12-10-05-05 requires setting the Gap Voltage to approximately -10.0 VDC against a 4140 steel target. This center-point voltage ensures the probe operates within the most linear portion of its 80-mil range. During installation in a reverse-mount housing, verify that the probe tip maintains a clear "side-view" clearance of at least 15mm from any adjacent metallic surfaces to prevent eddy current interference. The 1.0-meter integrated cable must be routed with a minimum bend radius of 25.4 mm (1.0 inch). We recommend using a connector protector if the coaxial junction is exposed to heavy oil mist or high-pressure washdown conditions.

Mechanical Resilience and System Synergy

This reverse mount probe offers exceptional durability in environments saturated with synthetic lubricants and high thermal gradients. It integrates flawlessly with Honeywell Experion PKS through the Bently Nevada 3500/42M monitor, allowing for high-resolution shaft centerline and orbit dynamics visualization. The FluidLoc technology ensures that pressurized oil does not leak through the cable into terminal boxes, a critical feature for high-pressure bearing housings. By providing a clean, high-amplitude signal, the 330105 series enables the advanced predictive diagnostics required by API 670 standards, ensuring maximum uptime for mission-critical machinery.

Global Logistics and Order Fulfillment

Processing Window: All orders ship within 2-7 days when payment finish.

Carrier Network: We dispatch via DHL, FEDEX, and UPS, ensuring rapid global arrival with real-time digital tracking.

Industrial Protection: Every unit is secured in anti-static industrial packaging and moisture-resistant barrier bags to safeguard the delicate sensing tip and electronics.

Quality Assurance: We supply only New, Original Pack, and Sealed units. Our technical team performs a multi-point inspection of the threads and cable sheath before shipment, ensuring immediate out-of-the-box reliability.

Field Maintenance Diagnostics

Q1: What is the primary use case for a Reverse Mount probe?

A1: These are typically used in conjunction with a probe housing (like the Bently Nevada 330180) where the probe is installed from the outside of the machine through a sleeve, allowing for gap adjustment while the machine is running.

Q2: Can I connect this 1.0m probe to a 4.0m extension cable?

A2: Yes, provided your Proximitor is calibrated for a 5.0-meter total system length. The probe (1.0m) plus the extension cable (4.0m) must equal the total length the Proximitor expects to maintain the correct 200 mV/mil scale factor.

Q3: How does the "FluidLoc" feature protect my system?

A3: It prevents oil or process gas from wicking through the inside of the cable. This prevents hazardous or messy fluids from migrating from the machine bearing into your junction boxes or local control panels.

Q4: Is the -05 approval necessary for non-explosive environments?

A4: While the probe will function without it, the -05 Multiple Agency Approval ensures the highest build quality and safety compliance, making it the standard choice for most global petrochemical and power generation facilities.