Bently Nevada 330901-00-08-10-02-05 3300 NSv Proximity Probes

Description

The 330901-00-08-10-02-05 configuration specifies a 3300 NSv proximity probe featuring a 1/4-28 UNF thread design engineered without stainless steel armor. This orderable part number is configured with a 0.0-inch unthreaded length (Option 00) and an overall case length of 0.8 inches (Option 08), which represents the minimum case length available for this series. The integrated probe lead has a total length of 1.0 meter (Option 10) and is constructed from standard coaxial cable terminating in a male miniature coaxial ClickLoc connector (Option 02), supplied with multiple hazardous area approvals (Option 05).

Operating as a key sensor within the 3300 XL NSv Proximity Transducer System, this unarmored standard-cable probe is optimized for tight-clearance installations on small-bore rotating machinery and aeroderivative gas turbines. By utilizing high-frequency eddy-current technology, it is able to perform non-contact shaft vibration and axial position measurements in compact spatial envelopes with reduced target area geometries. Unlike armored models (such as the 330902 series) or variants with integrated connector protectors, this streamlined unarmored configuration facilitates direct routing through conduit and standard machine housings.

Features

• Threaded Case Geometry: 1/4-28 UNF-2A threaded probe body without armor, designed for direct threaded mounting.
• Fully Threaded Body: Option 00 specifies a 0.0-inch unthreaded length, allowing the maximum range of depth adjustment during installation.
• Ultra-Compact Case: Option 08 provides a 0.8-inch case length to fit within severe physical restrictions inside high-speed equipment.
• 1.0-Meter Total Lead: Option 10 integrated 1.0-meter (39-inch) coaxial cable provides a direct connection to the extension cable.
• Standard Cable Connection: Option 02 miniature male ClickLoc connector offers secure, low-loss coupling with standard 75 ohm extension cables.
• Comprehensive Certification: Option 05 qualifies the probe for multiple international agency approvals in hazardous area applications.

Applications

• Axial position and shaft vibration measurements on high-speed aeroderivative gas turbines.
• Radial vibration and shaft position monitoring in small-bore rotating machinery with limited target geometries.
• Equipment vibration monitoring where small shaft diameters or small target areas restrict standard-size probe usage.
• Machinery diagnostics and protection systems requiring high-frequency non-contact displacement sensing.

Ordering Information

Technical Specifications

Installation Guidelines

Observe the following engineering and mechanical requirements to ensure proper installation and longevity of the probe:

• A #3 or larger tap drill is recommended when drilling and tapping mounting holes for this 1/4-28 probe.
• The maximum thread engagement length for a 1/4-28 case size is 0.375 inches. Ensure the mounting bracket or hole does not exceed this limit to avoid binding.
• Always torque the probe case to the recommended 5.1 N m (45 in lb). Do not exceed the absolute maximum rated torque of 7.3 N m (65 in lb).
• Route the integrated 75 ohm cable carefully, respecting the minimum bend radius of 25.4 mm (1.0 in) to prevent internal conductor damage.
• Keep the probe-to-extension cable connections dry and clean. For installations exposed to liquids, use silicone self-fusing tape or an accessory connector protector kit to shield the ClickLoc connectors.

Compliance and Certifications

When integrated with a compatible 3300 XL NSv Proximitor Sensor and extension cable, the 330901-00-08-10-02-05 probe meets the requirements of the following standards under Option 05:

• ATEX/IECEx: Intrinsically Safe (Ex ia IIC T5...T1 Ga) and Non-Sparking/Ec (Ex nA/Ex ec IIC T5...T1 Gc) for hazardous locations.
• North American (CSA/NRTL/C): Class I, Division 1, Groups A, B, C, and D; Class II, Groups E, F, and G; Class III.
• Environmental: Tested to IEC 68-2-3 damp heat standards, rated for 100% condensing humidity when connectors are properly insulated.