Product Overview

The Bently Nevada 330905-00-10-10-02-05 is a specialized 3300 NSv (Near Surface) proximity probe designed for applications where standard probes fail to deliver precision. This sensor excels in monitoring small-diameter shafts—typically those under 76 mm (3 in)—and targets with limited mounting clearance. By utilizing a tighter magnetic field pattern, the NSv probe eliminates the "side-viewing" interference and non-linearity often encountered in cramped machine bores. This makes it the critical choice for high-speed centrifugal compressors, small pumps, and aero-derivative turbines. Whether integrated into a 3500 Machinery Protection System or a Honeywell Experion PKS architecture, this probe ensures high-fidelity displacement data for vibration analysis and emergency shutdown (ESD) protection.

NSv Configuration Architecture

330905 - 3300 NSv Proximity Probe (1/4-28 UNF thread)

This model represents the standard NSv probe with a 1/4-28 UNF threaded body, optimized for tight mechanical tolerances and high-frequency response.

-00-10-10 - Dimensional Specifications

The first "-00" indicates a 0.0-inch unthreaded length, meaning the probe body is fully threaded. The "-10" defines a 1.0-inch overall case length, while the second "-10" specifies a 1.0-meter (3.3 ft) integral cable length.

-02-05 - Connector and Approval Logic

The "-02" suffix equips the probe with a miniature coaxial connector featuring a factory-installed connector protector to prevent fluid contamination. The "-05" option confirms CSA, ATEX, and IECEx multi-approvals for hazardous area installations in Zone 0, 1, and 2.

Vital Engineering Metrics

Professional Commissioning Protocol

Successful deployment of the 3300 NSv probe requires meticulous gapping. Engineers should utilize a digital multimeter to set the physical gap until the Proximitor Sensor output registers -9.0 Vdc (the nominal center of the NSv linear range). Ensure the integral cable maintains a minimum bend radius of 25.4 mm (1.0 inch) to preserve coaxial integrity. For installations in tight bores, verify that the probe tip has at least one probe-tip-diameter of clearance from any side-wall metal to prevent signal distortion. Always use the provided connector protector to shield the junction from oil and moisture ingress.

Industrial Reliability Performance

The 330905-00-10-10-02-05 is built to withstand the punishing environments of petrochemical and power generation facilities. Its polyphenylene sulfide (PPS) tip is hermetically molded to the stainless steel body, creating an impenetrable seal against high-pressure lubricants and corrosive gases. This rugged construction ensures the probe maintains its scale factor (7.87 V/mm) even under thermal cycling. By providing stable, low-noise signals to Turbine Supervisory Instrumentation (TSI), it allows for sophisticated diagnostic techniques such as orbit plots and shaft centerline analysis in modern asset management platforms.

Ordering info

• One (1) Brand New Bently Nevada 330905-00-10-10-02-05 Probe.

• Factory-sealed anti-static moisture-barrier packaging.

• One (1) pre-installed miniature coaxial connector protector.

• Comprehensive calibration and test datasheet.

• Set of 1/4-28 UNF mounting and lock nuts.

Delivery & Global Fulfillment

Delivery time: 3-5 days when payment finish via DHL/FEDEX/UPS. Our logistics team employs specialized industrial packaging with custom foam inserts to prevent any mechanical stress during air freight. Every shipment includes full insurance and a digital tracking number for real-time visibility from our warehouse to your site.

Technical Field FAQs

Q1: Can I use the NSv probe with a standard 3300 XL 8mm Proximitor?

A1: No. The NSv probe has a unique coil geometry and requires a dedicated 3300 NSv Proximitor Sensor. Using a standard Proximitor will result in incorrect scale factors and non-linear data.

Q2: What is the significance of the -05 approval option?

A2: This option provides "Multiple Approvals," meaning the probe is certified for use in nearly all global hazardous area jurisdictions (North America, Europe, International), simplifying compliance for global machinery fleets.

Q3: Is the NSv probe better for large shafts too?

A3: Generally, no. The NSv is optimized for small shafts and tight spaces. For shafts larger than 76 mm, the 3300 XL 8mm system is usually preferred due to its wider linear range.

Q4: How do I identify if the connector protector is installed?

A4: The -02 option includes a transparent or yellow sleeve over the coaxial connector. This must remain in place during installation to ensure the IP66 rating of the junction.