Bently Nevada 330103‑12‑20‑50‑02‑00

Comprehensive Product Overview & Technical Guide (Offline Version)

1. Product Overview

The 330103‑12‑20‑50‑02‑00 is a high‑precision eddy current proximity probe specifically designed for non‑contact measurement of vibration, radial and axial shaft displacement, and rotor position in rotating machinery.

This probe is part of the 3300 XL 12 mm series, a family of industrial proximity sensors built for large machines and heavy‑duty equipment. Its sensing ability is optimized for machines where a larger probe tip diameter and extended cable routing are required.

The configuration code 330103‑12‑20‑50‑02‑00 can be interpreted as:

• 12 mm probe diameter — large sensing surface for strong, stable signals.
• 200 mm case length — suited for deep mounting in large machinery frames or housings.
• 5.0 m system cable — extended cable length for installations where remote routing to monitoring equipment is necessary.
• Connector variant “02‑00” — standardized industrial locking connector for reliable electrical engagement.

This proximity probe is engineered for long‑term reliability in demanding industrial environments, providing consistent, high‑fidelity data for machinery protection, diagnostics, and maintenance optimization.

2. Brand

• Brand: Bently Nevada

Bently Nevada is a globally respected industrial brand specializing in rotating machinery condition monitoring, vibration measurement, and protection systems. Its products are widely used across sectors such as power generation, oil & gas, petrochemical, and heavy manufacturing due to their high reliability and long operational life.

3. Series

• Series: 3300 XL Series (12 mm)

The 3300 XL 12 mm proximity probe series is characterized by:

• High sensitivity and signal quality from larger probe tips.
• Modular design allowing configuration flexibility with different cables and connectors.
• Stable analog output compatible with standard monitoring and protection modules.
• Rugged construction capable of withstanding vibration, temperature extremes, dust, and oil exposure.
• Designed for continuous operation in harsh industrial environments.

4. Technical Specifications

5. Product Description

The 330103‑12‑20‑50‑02‑00 operates using eddy current sensing technology, where an electromagnetic field generated at the probe tip responds to changes in proximity of a conductive shaft surface. When the shaft moves within this field, the probe produces an analog voltage signal proportional to displacement.

The 12 mm tip diameter and 200 mm case length deliver robust signal output and allow installation in deeper mounting positions typical of large industrial machines. The 5.0 m coaxial cable provides extended routing flexibility, making it possible to position monitoring electronics at a distance from the machine. The industrial locking connector (02‑00) ensures secure electrical contact even under vibration and mechanical stress.

The probe’s IP67 protection rating safeguards it from dust, moisture, and oil exposure, making it reliable in harsh operating environments over long service life.

6. Applications

The 330103‑12‑20‑50‑02‑00 is commonly used in critical rotating equipment environments, including:

• Steam turbines — measurement of radial and axial shaft motion to prevent rotor rub and bearing damage.
• Gas turbines — continuous monitoring of vibrations during start‑up, transient, and steady‑state operation.
• Large compressors — tracking shaft dynamics to detect imbalance and misalignment early.
• High‑capacity industrial pumps — monitoring vibration and shaft position under load.
• Heavy electric motors — providing displacement and vibration signals for predictive analysis.
• Gear reduction drivetrains — identifying shaft movement under mechanical stress.

Monitoring capabilities include:
• Radial vibration measurement.
• Axial displacement detection.
• Shaft centerline position tracking.
• Keyphasor or speed reference output for phase/timing analysis.

These measurements support condition‑based maintenance, early fault detection, and machinery protection, reducing downtime and operational risks.

7. Product Advantages

High Signal Strength & Accuracy
The 12 mm probe tip provides strong, stable measurement signals for precise monitoring.

Non‑Contact Operation
Eliminates wear between sensing elements and the shaft, reducing maintenance needs.

Deep Mounting Capability
200 mm case length supports installations inside deep or obstructed mounting bores.

Extended Cable Flexibility
The 5.0 m coaxial cable enables remote routing to monitoring modules located away from the machine.

Secure Connector
Industrial locking connector (02‑00) provides stable electrical and mechanical engagement in vibration‑rich environments.

Industrial Durability
IP67 protection ensures reliable performance in dusty, oily, and moisture‑prone environments.

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