Advanced Rotary Asset Diagnostics

The Bently Nevada 330103-11-16-10-12 3300 XL 8mm Proximity Probe provides the critical data backbone for high-performance machinery protection systems. Engineered to measure shaft radial vibration, axial position, and Keyphasor signals, this probe excels in the rigorous environments of steam turbines, centrifugal compressors, and large-scale industrial pumps. Its eddy-current sensing technology delivers a high-resolution, non-contacting interface that tracks micron-level displacements with absolute fidelity. By integrating this probe into a Bently Nevada 3500 monitoring environment, plant operators gain the predictive intelligence required to identify rotor instability or bearing wear before catastrophic failure occurs, directly supporting automated emergency shutdown (ESD) logic and optimizing overall equipment effectiveness (OEE).

Model Specifics & Engineering Logic

330103 - 3300 XL 8mm Proximity Probe

Defines the standard 8mm tip diameter sensor utilizing a 3/8-24 UNF threaded body, the benchmark for reliability in Turbine Supervisory Instrumentation (TSI).

11 - Unthreaded Length (Dimension A)

Specifies a 1.1-inch (28 mm) unthreaded portion. This design allows the probe to pass through thick brackets or mounting plates without the risk of thread binding, ensuring precise depth adjustment.

16 - Overall Case Length (Dimension B)

Indicates a 1.6-inch (41 mm) total threaded case length. This mid-range body size provides sufficient adjustment travel to achieve the optimal electrical gap against the shaft target.

10 - Total Length Option

Designates a 1.0-meter (3.3 feet) integrated probe lead cable. This lead requires pairing with a 4.0m or 8.0m extension cable to complete a standard 5.0m or 9.0m calibrated system.

12 - Connector and Agency Approval

Combines a miniature coaxial ClickLoc connector with multiple global hazardous area certifications (ATEX/IECEx/CSA). This configuration ensures safe, moisture-resistant operation in Class I, Division 1 and 2 environments.

Core Hardware Specifications

Field Commissioning Procedures

Achieving the correct DC bias voltage is fundamental for system accuracy. During commissioning, monitor the Proximitor output with a digital multimeter; rotate the probe until the voltage reads approximately -10.0 VDC, which centers the sensor within its 80-mil linear window. Secure the 3/8-24 UNF lock nut to 13.6 N·m (120 in·lb) to prevent drift caused by machine casing vibration. Route the coaxial lead through a protective conduit, maintaining a minimum bend radius of 25.4 mm (1.0 inch) to prevent internal shielding damage and signal attenuation.

Performance Integrity in Extreme Conditions

The 330103-11-16-10-12 thrives where general-purpose sensors fail. Its Polyphenylene Sulfide (PPS) tip is chemically bonded to the stainless steel body using the TipLoc process, creating a hermetic seal against pressurized oil and moisture. This probe maintains a stable scale factor across its entire temperature range, ensuring that thermal expansion of the machine does not introduce false vibration data into the DCS. It integrates natively with Honeywell Experion PKS and Bently Nevada 3500/42M modules, providing the "clean" signal necessary for distinguishing between shaft dynamics and electromagnetic interference.

Fulfillment & Shipping Protocol

Delivery time: 3-5 days when payment finish, BY DHL/FEDEX/UPS.

We deliver all proximity probes in anti-static industrial packaging. Each unit arrives with factory-fitted connector caps and tip protection sleeves to ensure the high-impedance coaxial path remains uncontaminated and ready for immediate field gapping.

Technical Support FAQ

Q1: Can I use this 1.0m probe with a 5.0m extension cable?

A1: No. Adding a 5.0m cable creates a 6.0m total length. You must use a 4.0m or 8.0m extension cable to match the standard 5.0m or 9.0m Proximitor calibrations, ensuring the system's electrical capacitance remains within specification.

Q2: What is the benefit of the 1.1-inch unthreaded length?

A2: The unthreaded section (Dimension A) prevents damage to threads when sliding the probe through mounting glands or thick bearing caps. It simplifies the installation process in deep-well mounting scenarios.

Q3: How do I verify if the ClickLoc connector is properly mated?

A3: The ClickLoc design provides a tactile "click" and positive mechanical engagement. If the 3500 monitor shows a "Not OK" status, check for moisture in the connector or a loose connection which typically drives the DC voltage to the positive supply rail.