330903-00-11-05-02-CN | Bently Nevada 3300 NSv Series Proximity Probe

Description

Product Introduction

This is the Bently Nevada 330903-00-11-05-02-CN. It is a new 3300 NSv proximity probe. It is perfect for monitoring machine vibration and position. And iit has a tough design for harsh industrial environments. This probe is a direct upgrade. It replaces older 3300 RAM probes. It offers better chemical resistance. This makes it good for process compressors.

Model Number Details

• 330903: Base Model – 3300 NSv Probe, M8x1 thread, no armor.
• 00: Unthreaded Length = 00 mm.
• 11: Overall Case Length = 110 mm.
• 05: Total Cable Length = 0.5 meter (20 inches).
• 02: Connector = Miniature coaxial ClickLoc.
• CN: Country Specific approval.

Technical Specifications

• Brand & Model: Bently Nevada 3300 NSv Proximity Probe.
• Electrical Data
  • Probe Resistance (0.5m): 4.0 Ω ± 0.5 Ω.
  • Cable Capacitance: 69.9 pF/m typical.
  • Extension Cable Resistance: Center: 0.220 Ω/m, Shield: 0.066 Ω/m.
• Measurement Performance
  • Linear Range: 1.5 mm (60 mils) from 0.25 to 1.75 mm from target.
  • Recommended Gap: 1.0 mm (40 mils).
  • Sensitivity (ISF): 7.87 V/mm (+12.5%/-20%).
  • Linearity (DSL): Better than ±0.06 mm (±2.3 mils).
  • Frequency Response: 0 to 10 kHz (±3 dB with long wiring).
  • Minimum Target Size: 8.9 mm diameter (13 mm recommended).
• Mechanical & Environmental
  • Thread Size: M8 x 1.
  • Case Material: AISI 304 Stainless Steel.
  • Tip Material: Chemical-resistant PPS Plastic.
  • Temperature Range: -52°C to +177°C.
  • Pressure Seal: Viton O-ring (differential pressure).
  • Torque: Finger tight (Max 0.56 N•m).
  • Min. Bend Radius: 25.4 mm (1.0 in).

Installation & Maintenance

Mount the probe with the M8x1 thread. Engage at least 12 mm of thread. Tighten by hand (finger tight). Do not exceed 0.56 N•m. Set the gap to 1.0 mm (40 mils) for standard operation. Use the ClickLoc connector for easy cable attachment. Avoid sharp bends in the cable. Check the probe and cable for damage during routine maintenance.

Compatibility & Use

This probe works with Bently Nevada 3300 XL NSv Proximitor sensors. It is a direct replacement for 3300 RAM probes. Use it to measure vibration or position on compressors, turbines, and pumps. For small shafts under 13 mm, note that the scale factor may change. Reducing the gap can help.

Quality & Delivery

• Condition: New & Original. Factory packaging.
• Warranty: Full 12-month manufacturer warranty.
• Shipping: Fast worldwide delivery via FedEx, UPS, and DHL.

Frequently Asked Questions

How does the NSv probe improve on the old RAM probe?

The NSv probe has much better chemical resistance. This allows safe use in more applications, like process compressors where chemicals are present.

What is the “side-view characteristic” and why is it important?

It refers to how well the probe senses its target from the side. A better characteristic means more accurate gap setting and consistent measurements.

My shaft diameter is only 10mm. Can I use this probe?

Yes, the minimum target is 8.9mm. However, for best results on small shafts, set a smaller gap to minimize changes in the measurement scale factor.

What does the “-CN” suffix mean for my installation?

The “-CN” means the probe meets specific agency approvals for use in certain countries. It ensures regulatory compliance for your region.

The manual mentions a “Viton O-ring”. What if my process uses different chemicals?

Viton is good for many oils and fuels. If you use very specific or aggressive chemicals, contact Bently Nevada’s custom design department to discuss seal compatibility.

How to Choose the Right Probe

Select this 330903 model for M8 threaded holes and basic chemical resistance. Choose a longer cable version (like 05 for 0.5m) if your sensor is close to the probe. For very wet or oily environments, ask about the FluidLoc cable option. Always confirm the thread size on your machine before ordering.

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