Bently Nevada 3300 NSv Proximity Probe: Compact and Chemically Resistant

This is the Bently Nevada 330903-00-12-05-02-CN, a compact proximity probe from the 3300 NSv series. It uses an M8x1 metric thread for easy installation in modern machinery. The 330903-00-12-05-02-CN offers excellent chemical resistance, making it ideal for process compressors and other demanding applications. It is a direct, upgraded replacement for older 3300 RAM probes.

Your Model Number Decoded

Every part of 330903-00-12-05-02-CN specifies its unique configuration:

• 330903: Base model for a 3300 NSv probe with M8x1 thread and no armor.
• 00: Unthreaded Length: 0 mm. The entire case is threaded.
• 12: Overall Case Length: 120 mm.
• 05: Total Cable Length: 0.5 meter (20 inches).
• 02: Connector & Cable: Standard Miniature Coaxial ClickLoc connector and cable.
• CN: Configuration: Built to meet country-specific standards.

Technical Specifications for Precision Measurement

• Manufacturer & Series: Bently Nevada, 3300 NSv.
• Full Part Number: 330903-00-12-05-02-CN.
• Thread Type: M8x1 metric.
• Measurement Range (Linear): 1.5 mm (60 mils).
• Output Signal: -1 Vdc to -13 Vdc.
• Sensitivity (Scale Factor): 7.87 V/mm (200 mV/mil).
• Probe Resistance (0.5m): 4.0 Ω ± 0.5 Ω.
• Recommended Gap: 1.0 mm (40 mils).
• Frequency Response: 0 to 10 kHz.
• Accuracy (Non-Linearity): Better than ±0.06 mm (±2.3 mils).
• Operating Temperature: -52°C to +177°C.
• Key Feature: Enhanced chemical resistance for harsh process environments.
• Maximum Torque: Tighten to 0.56 N•m (5 in•lb) only.
• Minimum Target Size: 13 mm (0.5 in) diameter recommended.

Installation and Compatibility Notes

Install this probe into an M8x1 threaded hole. It is mechanically and electrically interchangeable with the older 3300 RAM probe, making upgrades simple. For best performance, set the gap to 1.0 mm (40 mils). The probe connects directly to 3300 XL NSv Proximitor sensors for a complete monitoring channel.

Certifications and Approvals

This -CN model is configured to satisfy specific country regulations. Please confirm the exact certification required for your project location.

Package Contents and Our Warranty

• One (1) Bently Nevada 330903-00-12-05-02-CN Proximity Probe.
• Delivered in original factory packaging.

We provide a solid 12-month warranty from the purchase date, covering material and workmanship defects.

Fast Global Shipping

We ship internationally using reliable express services: FedEx, UPS, and DHL. Tracking details are provided for every order.

Frequently Asked Questions (FAQ)

What is the main advantage of the NSv probe over the older RAM probe?

The NSv probe has much better chemical resistance. This allows reliable operation in environments with process gases or lubricants that could damage other probes.

Why is the maximum installation torque so low (5 in-lb)?

The M8x1 thread and internal seal are precision components. Over-tightening can easily damage the probe. Always use a torque wrench and stop at 0.56 N•m (5 in•lb).

What is the "Recommended Minimum Target Size" and why is it important?

For accurate measurement, the target shaft should be at least 13 mm (0.5 in) in diameter. Smaller targets can change the probe's sensitivity (scale factor).

Can I use this 0.5-meter probe to make a standard 5-meter or 9-meter system?

Yes. This short probe is designed to be used with a separate 3300 NSv extension cable to reach the standard total system lengths of 5 or 9 meters for the Proximitor.

Is this probe suitable for axial (thrust) position measurement?

Yes. The 3300 NSv probe can be used for both radial vibration and axial position measurement. You must adjust the gap setting according to the application requirements.

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