Bently Nevada 330906-02-12-05-02-CN 3300 NSv Reverse Mount Probe

Description

Providing proximity measurement in tight spaces, the Bently Nevada 330906-02-12-05-02-CN functions as a high-precision eddy current transducer designed for the 3300 NSv proximity transducer system. Engineered specifically for applications with narrow installation envelopes or thin target shafts, this reverse-mount probe delivers reliable dynamic vibration and static position feedback. The assembly features a robust polyphenylene sulfide (PPS) probe tip and an AISI 304 stainless steel case, ensuring excellent resistance to corrosive industrial environments and elevated process temperatures. Equipped with a FEP-insulated 75 ohm coaxial cable and a miniature coaxial ClickLoc connector, it maintains signal integrity across its 0.5-meter length without attenuation.

Features

• Optimized Geometry: Reverse-mount configuration facilitates installation in space-restricted machinery housings where standard front-mount probes cannot fit.
• Premium Materials: High-performance PPS tip and 304 stainless steel case provide exceptional mechanical strength and chemical compatibility.
• Stable Signal Transmission: Integrated 75 ohm coaxial cable insulated with fluoroethylene propylene (FEP) resists moisture, oils, and chemical attack.
• Secure Interconnect: Miniature coaxial ClickLoc connector prevents self-loosening and maintains consistent electrical contact under high-vibration conditions.
• Compliance Certified: Configured with CN options for verified adherence to regional regulatory and safety standards.

Applications

• Radial vibration and axial position monitoring of small-diameter shafts.
• Fluid-film bearing clearance measurements in small turbomachinery.
• Centrifugal compressor and high-speed blower monitoring.
• Space-constrained industrial machinery diagnostic systems.

Technical Specifications Table

Connections and Interfaces

Empirical Engineering Insights

Alternative Models & Compatibility

The 3300 NSv (Narrow Side view) system is specifically designed for situations where target shaft diameters are smaller than 50 mm (2 inches) or where side-clearance to conductive materials is extremely limited. Note that 3300 NSv probes are not interchangeable with standard 3300 XL 5mm or 8mm proximity probes. Combining a 3300 NSv probe with a standard 3300 XL Proximitor sensor driver will result in severe calibration errors and alter the system’s nominal 7.87 V/mm (200 mV/mil) scale factor.

Application Pitfalls & Engineering Notes

When deploying reverse-mount probes, verify that the thread engagement into the machine casing or bracket does not twist or bind the integrated cable. A major failure point is cable sheath damage caused by rotating the entire probe assembly during installation without disconnecting or pre-looping the cable. Maintain a minimum bend radius of 25.4 mm (1.0 inch) for the FEP-insulated coaxial cable to avoid structural degradation of the internal conductor shield.

Commissioning & Wiring Tips

Always clean the miniature coaxial ClickLoc connectors with an approved residue-free electronic solvent before mating. Ensure that the mechanical latch clicks into place securely. To protect the connection from moisture, oil ingress, and electromagnetic interference in dirty industrial environments, wrap the mated connector assembly in self-fusing silicone tape or install a Bently Nevada connector protector kit.

Installation Guidelines