Bently Nevada 330910-00-05-10-02-00 3300 NSv Proximity Probe

Product Overview

The 330910-00-05-10-02-00 (3300 NSv) is a high-precision industrial eddy-current sensor designed for machinery with restrictive installation requirements. Belonging to the Narrow Side View (NSv) series, this probe is specifically engineered for centrifugal air compressors, refrigeration compressors, and small-bore process pumps where standard 8 mm sensors would suffer from signal interference. The 330910-00-05-10-02-00 excels in measuring radial vibration and axial position on small shafts (under 51 mm) or narrow targets (under 15 mm). Utilizing Bently Nevada's patented TipLoc and CableLoc technologies, the probe ensures a robust bond between the tip and body and provides 220 N of pull strength, making it ideal for the aggressive process environments of power plants and chemical refineries.

Suffix Configuration Breakdown

According to the technical specifications in Datasheet 147385, the model 330910-00-05-10-02-00 follows this mechanical and electrical build:

• 330910: 3300 NSv Proximity Probe with M10X1 metric threading.

• 00 (Unthreaded Length Option): 0 mm unthreaded case length.

• 05 (Overall Case Length Option): 50 mm total case length.

• 10 (Total Length Option): 1.0 meter (3.3 feet) integrated probe lead.

• 02 (Connector and Cable-Type Option): Equipped with a miniature coaxial ClickLoc connector and standard cable (without armor).

• 00 (Agency Approval Option): Standard version with no specific hazardous area certifications required.

Technical Specifications

Engineering FAQs

What are the primary benefits of the NSv Narrow Side View design?

Standard 8 mm probes have a wide magnetic field that "sees" the sides of a mounting hole, creating an offset error. The NSv design focuses the field at the tip, allowing installation in much smaller counterbores and making it the superior choice for monitoring vibration on small-diameter shafts where side-view interference is a concern.

Is the ClickLoc connector reliable in high-vibration applications?

Yes. The ClickLoc is a patented locking mechanism. Unlike standard threaded connectors that can vibrate loose over time, the ClickLoc "clicks" into a secured mechanical state, ensuring a constant electrical connection and stable signal impedance for the 3500 monitoring system.

Can I use this probe with a standard 3300 XL extension cable?

No. The 3300 NSv series is electrically distinct from the standard 3300 XL 8 mm series. This probe must be paired with a 3300 NSv extension cable and a 3300 XL NSv Proximitor Sensor. Mixing components will lead to incorrect scale factors and inaccurate machinery data.

Field Installation and Maintenance Directives

• Torque Specifications: For M10X1 probe cases, the recommended installation torque is 7.5 N-m (66 in-lb). Never exceed the maximum rated torque of 22.6 N-m (200 in-lb). Over-tightening can cause case elongation and permanently shift the internal coil's calibration point.

• Gap Voltage Setting: For standard AISI 4140 steel, set the probe gap to achieve a bias voltage of -10 Vdc at the Proximitor Sensor output. This represents the center of the 1.5 mm linear range, ensuring the monitor can capture both positive and negative vibration peaks without clipping.

• Environmental Sealing: While the probe is rated for high temperatures, exposure below -34 deg C (-30 deg F) for sustained periods may cause the pressure seal to fail. Always use the provided self-fusing silicone tape to wrap the probe-to-extension cable connection to prevent moisture or oil ingress from affecting the ClickLoc signal.

• Cable Routing: Since this model (Option 02) does not have stainless steel armor, the cable must be protected within a rigid or flexible conduit if it is routed through areas where it may be stepped on, crushed, or exposed to sharp edges. Maintain a minimum bend radius of 25.4 mm (1 inch) at all times.