330905-00-09-05-02-CN | Bently Nevada NSv Probe Country Approval

Product Overview

The Bently Nevada 330905-00-09-05-02-CN is a high-precision 3300 NSv (Near Side view) proximity probe designed for machinery vibration and position monitoring. This model features an M10x1 metric thread and a 0.5-meter (20-inch) total cable length. Built for demanding industrial environments, the NSv probe offers increased chemical resistance and superior side-view characteristics, making it an ideal choice for process compressors and tight-clearance applications. It is fully interchangeable with the older 3300 RAM series, providing an easy upgrade path for existing vibration monitoring systems.

Technical Specifications

Core Technical Advantages

Optimized for Narrow Gaps

The 3300 NSv probe is specifically designed for applications where the probe must be mounted close to a target or where the side-view of the probe might be obstructed. Its superior side-view characteristics ensure that measurements remain accurate even in confined mechanical spaces, outperforming legacy 3000-series 190 probes.

Rugged PPS Tip Construction

The probe tip is manufactured from Polyphenylene Sulfide (PPS), a high-performance thermoplastic known for its exceptional chemical and thermal stability. This allows the probe to operate continuously in temperatures up to 177°C and withstand exposure to aggressive process gases often found in compressor environments.

Precise Signal Linearity

With an Incremental Scale Factor (ISF) of 7.87 V/mm and a Deviation from Best Fit Straight Line (DSL) of less than ±0.06 mm, this probe provides highly linear data conversion. This precision is maintained across the entire 1.5 mm range, ensuring that even small shaft displacements are captured with extreme reliability.

Installation & Maintenance

• Mechanical Engagement: The M10x1 probe case supports a maximum thread engagement of 15 mm. For secure mounting, the first three threads should be tightened to a maximum torque of 22.6 N•m.
• Miniature ClickLoc Connector: The gold-plated miniature coaxial ClickLoc connector ensures a secure, vibration-resistant connection. Always torque the connector-to-connector junction to finger tight (max 0.56 N•m).
• Differential Pressure Seal: Featuring a Viton O-ring, the probe is designed to seal differential pressure between the tip and the case, critical for preventing leaks in pressurized compressor housings.

Engineering Advantages

The IC693-style modularity of the 3300 NSv system allows for seamless integration into existing Bently Nevada monitoring racks. Weighing approximately 0.35 kg, this probe is built with an AISI 304 stainless steel case for maximum corrosion resistance. Its wide operating temperature range (-52°C to +177°C) ensures that measurements remain stable during machine start-up from cold states and throughout high-load thermal expansion.

Technical FAQs

Q1: Is this probe compatible with the 3300 RAM extension cables?
A1: Yes, the 3300 NSv probes are both mechanically and electrically interchangeable with Bently Nevada’s previous 3300 RAM proximity probes and cables.

Q2: What is the benefit of the -CN agency approval?
A2: The -CN suffix indicates that the probe meets specific regional or country-specific industrial safety and environmental standards required for compliance in certain global markets.

Q3: How does target size affect measurement accuracy?
A3: For optimal performance, a minimum target diameter of 13 mm (0.5 in) is recommended. Targets smaller than 8.9 mm will result in a change in scale factor, though reducing the gap can help mitigate this.