330103-00-03-05-02-CN Bently Nevada 3300 XL Probe

Product Overview

The Bently Nevada 330103-00-03-05-02-CN is a high-performance 3300 XL 8mm proximity probe designed for critical machinery protection. This eddy current sensor provides non-contacting displacement and vibration measurements for steam turbines, centrifugal compressors, and high-speed motors. Engineered for high-precision Turbine Supervisory Instrumentation (TSI), it ensures stable signal output and long-term reliability in harsh industrial environments.

Technical Configuration

Model Analysis: 330103-00-03-05-02-CN

• 330103: 3300 XL 8mm Probe, M10 x 1 metric thread.
• 00 Unthreaded Length: 0 mm minimum unthreaded length.
• 03 Case Length: 30 mm overall case length.
• 05 Total Length: 0.5 meter (1.6 feet) integrated cable.
• 02 Connector: Miniature coaxial ClickLoc™ connector, standard cable.
• CN Approval: Country-specific hazardous area certifications (Ex/CCC).

Technical Specifications

Installation & Engineering Guide

Precision installation is vital for accurate vibration data. Follow these engineering guidelines:

• Gap Setting: Calibrate the mechanical gap to -9 Vdc (approx. 1.27 mm / 50 mils) to ensure the probe operates in the center of its linear range.
• Mounting Limits: Do not exceed 15 mm of thread engagement into the bracket to prevent internal housing stress.
• Bend Radius: Maintain a minimum cable bend radius of 25.4 mm (1.0 in) to ensure signal integrity.
• Sealing: The Viton® O-ring provides a differential pressure seal between the tip and case; avoid temperatures below -34°C to maintain seal elasticity.

Engineering Advantages

• ClickLoc™ Connector: The gold-plated miniature coaxial connector prevents accidental disconnection and maintains low-resistance contact in high-vibration zones.
• Corrosion Resistance: High-grade stainless steel casing and PPS tip material withstand exposure to caustic turbine oils and industrial fluids.
• Backwards Compatibility: Fully compatible with legacy 3300 series monitors and 3300 XL extension cables.

Technical FAQs

Q1: How do I verify the probe's health before installation?
A1: Use a multimeter to measure resistance between the center conductor and outer shield. For this 0.5m model, it should read 7.45 Ω ± 0.50 Ω. A reading of 0 or infinity indicates a faulty unit.

Q2: Can I install this probe in a hazardous zone?
A2: Yes. The "CN" suffix confirms that this probe meets localized explosive atmosphere standards (Class I, Zone 0/2) when installed with appropriate barriers.

Q3: Why is the gap voltage set specifically to -9 Vdc?
A3: -9 Vdc represents the midpoint of the -1 to -17 Vdc linear range. This allows the sensor to capture maximum peak-to-peak vibration without clipping the signal.