Product Overview

The Bently Nevada 330104-00-03-10-01-00 eddy current proximity probe acts as a premier non-contact displacement sensor engineered for reverse-mount installations on high-performance rotating assets. This 8mm transducer excels at capturing high-frequency shaft vibration, axial thrust positioning, and phase reference measurements on critical machinery, including gas turbines, high-speed gearboxes, and large process compressors. Delivering an exceptionally accurate analog output directly to Bently Nevada 3500 protection panels and plant-wide DCS architectures, it ensures continuous machine health monitoring. Heavy industrial facilities deploy this robust sensor inside emergency shutdown systems (ESD) and Turbine Supervisory Instrumentation (TSI) loops to eliminate unexpected machinery breakdowns, optimize maintenance scheduling, and maintain absolute structural safety across continuous manufacturing plants.

Hardware Option Code Breakdown

330104 Base Instrument Model

This denotes a 3300 XL 8mm Proximity Probe designed specifically for reverse-mount applications, featuring a 3/8-24 UNF threaded body that integrates smoothly into standard bracket housings or external probe sleeves.

Unthreaded Length Identifier (-00)

The 00 suffix indicates zero unthreaded length on the probe casing. The entire metallic body utilizes continuous threading, giving field engineers maximum adjustability inside deep or customized mounting brackets.

Overall Case Length Suffix (-03)

This option specifies a short 0.3-inch total case length. This ultra-compact profile optimizes the assembly for tight internal machinery recesses and specialized reverse-mount housings where longer probe bodies cannot fit.

Total System Cable Length (-10)

The 10 code establishes a 1.0-meter (approximately 3.3 feet) integrated flexible cable length. This standard configuration links perfectly with a 4.0-meter or 8.0-meter 3300 XL extension cable to form a complete 5.0-meter or 9.0-meter calibrated transducer system.

Miniature Connector Variant (-01)

This option provides a standard miniature coaxial ClickLoc connector on the cable termination point. It provides a robust, low-loss electrical interface engineered to snap firmly into the matching extension cable terminal.

Compliance and Agency Approvals (-00)

The 00 suffix indicates the base uncertified configuration. This configuration suits standard commercial installations that do not require specialized explosive-proof or intrinsic safety certifications for hazardous environments.

Mechanical and Performance Specifications

Field Installation Guidelines

Electrical Gap Optimization

Adjust the physical spacing between the probe tip and the target shaft surface using a digital multimeter connected to the Proximitor sensor loop. Position the reverse-mount housing until the DC output voltage reads exactly -10.0 Vdc, indicating the precise center of the 80-mil linear operational range.

Routing Bend Management

Maintain a strict minimum bend radius of 25.4 mm (1.0 inch) for the 1.0-meter integrated cable along the entire routing path. Avoid creating tight pinches or pulling the cable over sharp casing internal borders, as physical cable deformation changes system capacitance and compromises measurement fidelity.

Mechanical Locking Security

Always secure the reverse-mount probe using double jam nuts or a verified thread-locking compound during installation. Heavy rotational vibration can cause unsecured threads to back out, shifting the calibrated gap distance and disrupting critical machinery protection signals.

Industrial Environmental Resilience

Chemical and Fluid Submersion Immunity

The combination of a high-strength PPS tip and a 303 stainless steel body protects the sensor against high-pressure turbomachinery oil mist, ammonia vapors, and water ingress. The internal circuitry maintains absolute electrical stability from -51°C to +177°C, allowing the sensor to deliver accurate micro-inch readings through extreme temperature fluctuations.

Native Automation Integration

The raw analog output couples flawlessly with Honeywell Experion PKS, Emerson DeltaV, and Siemens S7 architectures via intermediate Proximitor components. This hardware synergy enables near-instantaneous transmission of machinery dynamics, allowing the automation network to activate protection interlocks and execute safe emergency shutdowns.

Ordering info

(1) Bently Nevada 330104-00-03-10-01-00 3300 XL 8mm Probe.

(2) Integrated 1.0-meter low-noise coaxial cable.

(3) Miniature coaxial ClickLoc male terminal connector.

(4) Factory-stamped product calibration datasheet.

Worldwide Logistics and Protective Packaging

Orders ship rapidly within 2-7 days when payment finish, utilizing premier courier systems such as DHL, FEDEX, and UPS to guarantee fast, traceable transit. Our logistics specialists pack every proximity probe inside robust, custom-molded anti-static industrial packaging to neutralize physical vibration shock and eliminate electrostatic discharge risks during international transport.

Transducer Field Troubleshooting

Q1: What unique mechanical advantage does a reverse-mount probe body like the 330104 provide?

A1: The reverse-mount configuration allows the probe to install from the outside of the machine casing via a specialized housing sleeve. This design permits field engineers to replace, inspect, or re-gap the probe while the machinery remains running, eliminating the need to dismantle the main bearing housing or halt production.

Q2: How can I verify if the internal probe coil has failed or shorted?

A2: Disconnect the probe from the extension cable and attach a digital multimeter across the inner pin and outer ring of the ClickLoc connector. A functional 3300 XL 8mm probe with a 1.0-meter cable exhibits a continuous DC resistance value between 5.9 and 7.7 ohms. A reading approaching zero ohms indicates a short circuit, while a reading of infinity confirms an open coil loop.

Q3: Can I connect this 330104 probe directly to a 3300 XL Proximitor sensor without an extension cable?

A3: No. The 3300 XL Proximitor sensor requires a specific electrical length of either 5.0 meters or 9.0 meters to maintain its accurate 200 mV/mil scale factor. Connecting a 1.0-meter probe directly causes a massive impedance mismatch, leading to severe calibration errors and rendering the output unusable for your machinery protection system.