Bently Nevada 330909-00-80-10-01-05 3300 XL NSv Proximity Probe

Description

The 330909-00-80-10-01-05 is an eddy-current 3300 NSv Proximity Probe developed by Bently Nevada for non-contacting machinery displacement and shaft vibration monitoring loops. This fractional-thread transducer operates as an integrated sensor input within the 3300 XL NSv Proximity Transducer System, which is specifically deployed in centrifugal air compressors, refrigeration compressors, and process gas compressors characterized by highly confined internal measurement footprints. By projecting a high-frequency radio frequency (RF) carrier field into the adjacent target area, the sensor continuously captures micro-gap transitions caused by surface-level eddy currents and relays this raw analog displacement wave back to a remote Proximitor module.

This specialized sensor is engineered for application zones where deep counterbores, severe sideview visibility constraints, or limited rear clearance prohibit the use of standard 5 mm or 8 mm proximity probe designs. The 330909-00-80-10-01-05 configuration features a 3/8-24 UNF fractional threaded steel casing integrated with an interlocking stainless steel armor sleeve to prevent physical pinching, shearing, and oil-induced outer insulation decay. It is calibrated to measure dynamic radial vibration on narrow shafts smaller than 51 mm (2 in) or axial thrust position on flat target surfaces smaller than 15 mm (0.6 in). Equipped with Multiple Agency Approvals under the corresponding configuration suffix, the probe provides continuous machinery asset protection when marshalled inside classified hazardous plant zones.

Features

• Low-profile transducer tip architecture engineered for tight machinery counterbores and restricted sideview clearance paths.
• Rugged 3/8-24 UNF fractional fully-threaded casing matched with an interlocking stainless steel armor wrap for severe mechanical wear protection.
• Integrated gold-plated brass ClickLoc miniature coaxial plug delivering a low-loss, vibration-proof positive locking wire link.
• High-stability sensor coil optimized to track small target areas, including micro-diameter rotating shafts under 51 mm.
• Full drop-in backward compatibility with legacy Bently Nevada 3300 RAM transducer systems and 190 series processing architectures.

Applications

• Radial shaft vibration and dynamic fluid-film bearing displacement tracking on industrial high-speed centrifugal compressors.
• Dual-direction rotor axial thrust position offset capture inside compact turbo-expander gearboxes.
• Rotating target speed detection, zero-speed confirmation, and Keyphasor phase reference signal generation in tight spaces.

Mechanical Profile & Exact Weight Formulas

In high-integrity asset tracking, using non-specific box dimensions can cause mechanical fouling during bracket adjustment. Per official Bently Nevada 147385 datasheet technical constants, the physical geometry and cumulative dry mass metrics for this specific 1.0-meter fully threaded probe are precisely calculated below:

• Unthreaded Case Length (Option A): Exactly 0.0 inches (0 mm) indicating a fully threaded barrel profile.
• Overall Case Length (Option B): Exactly 8.0 inches (203.2 mm) representing an extended-reach structural case length.
• Threaded Case Section: Calculated as Overall Case Length minus Unthreaded Length (8.0 in - 0.0 in) = 8.0 inches (203.2 mm) of active 3/8-24 UNF threads.
• Total Physical Cable Length (Option C): Exactly 1.0 meter (3.9 feet / 39 inches) measured from the probe tip face to the terminal coax joint.
• Linear Mass Density of Armored Cable: Nominal 64 grams per meter (0.70 oz/foot) driven by the heavy interlocking stainless steel armor skin.
• Net Probe Head and Long-Case Mass: Approximately 85 grams (3.00 oz) including the extended 8-inch AISI 304 stainless steel threaded shell, sensing coil, and transition hub assembly.
• Total Net Hardware Weight: Calculated as (64 g/m x 1.0 m) + 85 g = 149 grams (5.26 oz) absolute net hardware weight per unit (excluding shipping boxes and the accompanying 9/16-inch industrial lock nut).

Ordering Information

Technical Specifications

Connections/Interfaces

Installation Guidelines

• Total System Loop Matching: This 1.0-meter physical length probe must be paired with a 4.0-meter extension cable to form a 5.0-meter total system loop, or a 6.0-meter extension cable to form a 7.0-meter total system loop. The total length must precisely match the electrical calibration length of the 3300 XL NSv Proximitor sensor.
• Mechanical Gap Adjustment: Manually thread the probe into the machine casing until the tip contacts the target surface, then back it out to the designated linear gap voltage threshold (typically -9.0 Vdc or central linear range) before tightening the 9/16-inch lock nut.
• Avoid Ground Contacts: Ensure the miniature coaxial ClickLoc connector junction does not touch the metal walls of the junction box or conduit fittings. Wrap the connected union with self-fusing silicone tape to prevent electrical noise loop interference.
• Conduit Protection Routing: The flexible stainless steel armor provides mechanical deflection protection; however, the probe lead wire should still be routed within dedicated low-voltage instrument trays to minimize exposure to high-voltage electromagnetic fields (EMI).