Bently Nevada 330902-00-95-10-02-05 3300 NSv Proximity Probe

Description

330902-00-95-10-02-05: 3300 NSv Proximity Probe with stainless steel armor, featuring 1/4-28 UNF threads, Option 00 unthreaded length (0.0 inches), Option 95 overall case length (9.5 inches), Option 10 total probe length (1.0 meter), Option 02 miniature coaxial ClickLoc connector with standard cable, and Option 05 agency approval (multiple approvals). This specific configuration provides built-in mechanical protection via its stainless steel armor, preventing physical damage and abrasion of the FEP insulated probe cable in harsh operating environments.

Designed for tight-clearance and limited-geometry installations, the 3300 NSv proximity probe operates on eddy-current measurement principles to monitor shaft vibration, axial position, or speed on small-bore machinery. Unlike unarmored models such as the 330901, the armored 330902 provides enhanced durability in demanding industrial conditions, ensuring stable transmission of displacement signals to the compatible 3300 XL NSv Proximitor Sensor (330980).

Features

• Integrated stainless steel armor provides robust protection against physical impact and mechanical wear in severe environments.
• Option 00 unthreaded length provides a fully threaded 1/4-28 UNF probe body for versatile and secure mounting depths.
• Option 95 overall case length of 9.5 inches enables deep reach into machine casings and housings.
• Miniature coaxial ClickLoc connector ensures a secure, low-loss, and click-locking interface with the extension cable.
• Option 05 multiple approvals package enables installation in hazardous locations with CSA, ATEX, and IECEx certifications.

Applications

The 3300 NSv proximity probe is ideal for critical rotating machinery with restricted installation space or small target geometries. Common industrial applications include:

• Centrifugal air compressors and refrigeration compressors.
• Process gas compressors and high-speed turbomachinery.
• Radial vibration and axial (thrust) position measurements on small shafts.
• Tachometer, zero-speed, and phase reference (Keyphasor) measurements.
• Tight-clearance installations where sideview and counterbore restrictions apply.

Ordering Information

Technical Specifications

Installation Guidelines

• Mounting Torque: Recommended installation torque for 1/4-28 probe cases is 5.1 N m (45 in lb), up to a maximum of 7.3 N m (65 in lb). Do not exceed.
• Cable Handling: Ensure a minimum bend radius of 25.4 mm (1.0 in) is maintained for the armored cable during installation and routing.
• Probe Gapping: Set the probe-to-target gap using a micrometer or by measuring the bias voltage (typically 1.0 mm or 40 mils, which yields approximately -9 Vdc on compatible Proximitor monitors).
• Connection Protection: Apply connector protectors or silicone tape on the ClickLoc connection to prevent moisture and fluid infiltration from degrading signal performance.

Compliance and Certifications

• ATEX/IECEx: Ex ia IIC T5...T1 Ga; Ex ia IIIC T90 degC...T280 degC Dc (EPL Ga, EPL Dc)
• ATEX/IECEx (non-sparking): Ex nA IIC T5...T1 Gc; Ex ec IIC T5...T1 Gc
• North America (CSA/cCSAus): Class I, Division 1, Groups A, B, C, and D; Class II, Groups E, F, and G; Class III
• CE Mark: Yes (RFI/EMI immunity approved)