Product Overview

The Bently Nevada 330102-04-16-10-02-00 non-contact eddy current probe stands as the industry-standard sensor for tracking critical asset health on utility steam turbines, centrifugal compressors, and massive industrial fans. This 8mm proximity probe tracks dynamic shaft vibration, axial position, and thermal growth with micro-inch accuracy, transferring the raw physical displacement data straight to Bently Nevada 3500 protection racks and plant-wide DCS architectures. Its robust construction ensures reliable performance in hostile machinery interiors, maintaining a constant 200 mV/mil output scale despite the presence of turbulent bearing oils and high operating pressures. Plant engineers trust this specific model within emergency shutdown loops and automated safety configurations to prevent catastrophic machine damage, minimize expensive forced outages, and secure uninterrupted production uptime across complex oil, gas, and power generation processes.

Part Number Structural Configuration

330102 Base Model

This defines a 3300 XL 8mm Proximity Probe with a 3/8-24 UNF English thread profile, serving as a reliable structural match for standard industrial machine casings and specialized bracket assemblies.

Unthreaded Length Suffix (-04)

The 04 code designates an unthreaded length of 0.4 inches. This engineering feature allows the probe body to pass cleanly through the mounting sleeve while leaving a precise section of the thread exposed for external locking nuts.

Overall Case Length Suffix (-16)

This setting designates a total case length of 1.6 inches. This length enables the probe tip to seat accurately relative to the target shaft surface across typical bearing housing dimensions.

Total Length Option (-10)

The 10 suffix establishes a total electrical cable length of 1.0 meter (approximately 3.3 feet). This standard configuration pairs perfectly with a 4.0-meter or 8.0-meter extension cable to create a balanced 5.0-meter or 9.0-meter transducer system loop.

Connector Option (-02)

This value specifies the inclusion of a miniature coaxial ClickLoc connector with a pre-installed factory connector protector. This mechanism shields the critical electrical junction point from continuous fluid spray and industrial dust.

Agency Approvals (-00)

The 00 code represents the standard, non-certified worldwide configuration. It is intended for generalized industrial operating zones that do not demand intrinsic safety or explosion-proof certifications.

Mechanical and Electrical Parameters

Mechanical Position and Installation Parameters

Target Gap Calibration

Set the installation gap using a calibrated digital voltmeter linked to the Proximitor sensor output terminals. Adjust the probe depth until the baseline readout indicates exactly -10.0 Vdc, which corresponds to the precise center of the 3300 XL linear range (approximately 50 mils distance from the target surface).

Cable Bend Limits

Enforce a minimum physical bend radius of 25.4 mm (1.0 inch) during the complete sensor routing layout. Do not bend the cable sharply at the exit point of the stainless steel probe body, as high physical strain deforms the internal conductor structure and distorts high-frequency eddy current fields.

Thread Torquing Restrictions

Do not exceed a maximum installation torque of 22.6 N·m (200 in·lb) when tightening the primary mounting nuts. Excess torque distorts the stainless steel outer casing, deforms internal electrical insulation layers, and causes calibration drift or complete sensor loss over extended thermal cycles.

Advanced Protection Capabilities

Impervious to Chemical Attack

The high-performance PPS probe tip and 303 stainless steel casing deliver comprehensive protection against aggressive lubricating liquids, synthetic ammonia vapors, and moisture ingress. The sensor face maintains consistent dielectric stability across a broad thermal scope of -51°C to +177°C, allowing precise measurement tracking through severe process changes.

Total Plant Integration

The raw analog output integrates perfectly into machinery diagnostic suites, delivering real-time shaft tracking straight to Honeywell Experion PKS networks or individual PLC units. This setup ensures zero transmission lag, allowing the plant control architecture to respond instantly to high-vibration alarms and initiate automated safety shutdown trips.

Ordering info

(1) Bently Nevada 330102-04-16-10-02-00 3300 XL 8mm Probe.

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

(3) Factory-installed ClickLoc coaxial connector protector.

(4) Technical certificate of conformity.

Shipping Management and Protection

Our logistics department processes and dispatches orders within 2-7 days when payment finish, utilizing premier courier routes through DHL, FEDEX, and UPS for fast transit. Every sensor ships wrapped in heavy-duty anti-static industrial packaging, which prevents physical impact damage and blocks stray static discharges, ensuring the component arrives at your facility ready for immediate field installation.

Field Technical Analysis

Q1: What happens if I attempt to use a standard 3300 XL probe with a non-XL Proximitor sensor?

A1: While the units can connect mechanically, mixing XL and non-XL hardware degrades system accuracy. The 3300 XL probe exhibits a different electrical impedance profile compared to older series components; using mismatched elements skews the 200 mV/mil scale factor, shifts the nominal gap voltage, and introduces non-linear errors across the vibration monitoring range.

Q2: How do I verify if the probe has suffered an internal short circuit or coil failure?

A2: Disconnect the probe from the extension cable and measure the resistance across the ClickLoc center pin and outer body using a digital multimeter. A functional 3300 XL 8mm probe with a 1.0-meter cable exhibits a continuous DC resistance between 5.9 and 7.7 ohms. A reading near zero ohms points to an internal short, while a reading of infinity confirms an open circuit loop.

Q3: What is the purpose of the option 02 connector protector on this specific assembly?

A3: Option 02 includes a specialized silicone sleeve molded directly over the miniature coaxial connector. This design prevents internal bearing oil, moisture, and fine metal dust from seeping into the high-impedance coaxial junction, eliminating potential ground faults and signal noise without requiring separate field-applied self-vulcanizing tape.

Q4: Can this probe be mounted through a machine casing without a separate housing?

A4: Yes, you can mount this probe directly through a threaded hole in the machine casing, provided the casing thickness matches the unthreaded and threaded body lengths. However, for easier gap adjustments and online maintenance without opening the machine, we recommend using an external Bently Nevada proximity probe housing assembly.