Bently Nevada 3300 NSv Miniature Proximity Probe

Introducing the Bently Nevada 330901-00-08-10-02-CN, an ultra-compact proximity probe designed for space-constrained vibration monitoring. With its miniature 1/4-28 UNF thread and short 0.8-inch case, this probe is the ideal solution for small motors, pumps, fans, and other compact machinery where standard probes cannot fit. It delivers reliable non-safety vibration data with a practical 1.0-meter cable, making installation in tight spaces simple and effective.

Complete Model Number Breakdown

• Base Model: 330901 (3300 NSv Probe, 1/4-28 UNF, No Armor)
• Unthreaded Length (00): 0.0 inches
• Overall Case Length (08): 0.8 inches
• Total Cable Length (10): 1.0 meter (39 inches)
• Connector & Cable (02): Miniature Coaxial ClickLoc, Standard Cable
• Agency Approval (CN): Country-Specific Configuration

Core Technical Specifications

• Thread Type: 1/4-28 UNF (Miniature)
• Probe Resistance (1.0m): 4.2 Ω ± 0.5 Ω
• Linear Range: 1.5 mm (60 mils) typical for NSv systems
• Scale Factor: 7.87 V/mm (200 mV/mil) typical
• Output Voltage: -1 to -13 Vdc over linear range (typical)
• Frequency Response: 0 to 10 kHz typical
• Operating Temperature: -52°C to +177°C (-62°F to +351°F)
• Probe Tip: Polyphenylene Sulfide (PPS)
• Probe Case: AISI 304 Stainless Steel
• Pressure Seal: Viton® O-ring
• Max Torque (Case): 7.3 N•m (65 in•lb)
• Recommended Torque: 5.1 N•m (45 in•lb)
• Max Thread Engagement: 0.375 inches
• Cable Type: 75 Ω Coaxial with FEP Insulation
• Weight: Approx. 14 to 150 g (0.5 to 5.3 oz)

Key Features & Benefits

• Ultra-Compact Design: The smallest standard UNF thread (1/4-28) and a sub-1-inch case enable installation where no other probe can fit.
• Reliable Performance: Despite its size, it delivers the same robust performance and chemical resistance as larger NSv probes.
• Standard Compatibility: Uses the standard ClickLoc connector for easy integration with Bently Nevada monitoring systems.
• Practical Cable Length: The 1.0-meter cable provides enough length for connection to a nearby junction box without excess slack.
• Rugged Construction: Built with a durable PPS tip and stainless steel case to withstand industrial environments.

Compatibility & Installation Notes

This probe is designed for non-safety vibration monitoring with Bently Nevada 3300 NSv and compatible systems. Install it into a 1/4-28 UNF threaded hole. Be careful not to exceed the maximum thread engagement of 0.375 inches (9.5 mm) or the recommended torque of 5.1 N•m to avoid damaging the probe or its seal. The short case length requires precise positioning relative to the target.

Target & Application Guidance

• Ideal For: Small bearings, compact gearboxes, light-duty motors, and auxiliary equipment.
• Target Size: Ensure the target diameter meets or exceeds the minimum requirement for NSv probes (typically >13mm for consistent performance).

Ordering & Service Information

This genuine Bently Nevada product is covered by a 12-month warranty. We ship worldwide via FedEx, UPS, and DHL for fast and reliable delivery to your facility.

Professional FAQs

What is the most common application for a 1/4-28 UNF probe?

It is specifically designed for small machinery frames, pump bearing housings, or motor end-bells that have limited space and are tapped with this miniature thread size.

Can this probe be used for axial position measurement?

It is primarily designed for radial vibration. For axial position, ensure the target area is large, flat, and perpendicular to the probe, and consult system guidelines for small targets.

How does it differ from an M8x1 probe?

The 1/4-28 UNF is an imperial (inch) thread, while M8x1 is a metric thread. They have similar sizes but different thread forms. You must use the one that matches your equipment's mounting hole.

Is the cable on this model replaceable?

No. The cable is integrally molded to the probe body. If the cable is damaged, the entire probe assembly must be replaced.

What does the "CN" approval option mean?

It signifies the probe is configured for country-specific requirements, which may include particular documentation, markings, or compliance certificates for certain regional markets.

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