Bently Nevada 330901-00-40-05-02-00 3300 NSv Proximity Probe

Description

Fully threaded 1/4-28 UNF steel probe body (Option 00) with 4.0 in case (Option 40) and 0.5 m lead (Option 05) — 330901-00-40-05-02-00 specifies this unarmored 3300 NSv proximity probe configuration. This non-contact eddy-current transducer is engineered to measure shaft vibration and axial position in space-constrained machinery installations where target surfaces are reduced or side clearance is tight. By omitting a protective stainless steel armor wrap, this configuration achieves a lightweight, flexible cable profile that simplifies routing through tight internal channels and conduits.

Unlike sibling variants featuring physical armor protection (such as the 330902 series) or those equipped with pre-installed connector protectors (Option 01), this specific probe relies on a bare fluoroethylene propylene (FEP) insulated coaxial cable and a standard miniature male coaxial ClickLoc connector (Option 02). To form a complete, calibrated transducer loop, this 0.5-meter component must be combined with a compatible 330930 extension cable and a 330980 Proximitor sensor. Because it is specified under agency approval Option 00, this unit is designed for general-purpose industrial applications where hazardous area certifications are not required.

Features

• Unarmored fluoroethylene propylene (FEP) insulated coaxial probe cable optimized for tight internal bend radii.
• Fully threaded 1/4-28 UNF-2A probe body featuring a 4.0-inch overall case length with 0.0 inches unthreaded length.
• Short 0.5-meter (20-inch) overall probe length ideal for local connection inside machinery housings.
• Miniature coaxial ClickLoc connector made of gold-plated brass to establish a secure, slip-resistant electrical connection.
• High-durability polyphenylene sulfide (PPS) probe tip material providing robust chemical and process fluid resistance.
• Viton O-ring pressure seal built between the probe tip and case to prevent internal media leakage.
• Standard general-purpose configuration requiring no external safety agency barrier setups (Option 00).

Applications

• Shaft vibration and axial displacement monitoring on aeroderivative gas turbines.
• Radial position monitoring in high-speed, tight-clearance auxiliary pumps and blowers.
• Machinery diagnostics on small-bore rotating equipment where probe target areas are smaller than 20 mm.
• Space-constrained sensor retrofits where standard 3300 XL 8 mm probes suffer from side-view clearance interference.

Ordering Information

Technical Specifications

Installation Guidelines

• Position the probe to an initial mechanical gap of 1.0 mm (40 mils) relative to the shaft target to ensure proper linear-range bias voltage.
• Ensure target material matches Bently Nevada AISI 4140 steel calibration for optimal scale factor accuracy.
• Lock the miniature male coaxial ClickLoc connector firmly into the extension cable's mating connector to prevent vibration-induced loosening.
• Protect the unarmored ClickLoc connector assembly from water, oil, and moisture using silicone tape or separate protective sleeves.
• Securely route the FEP-jacketed coaxial lead through protective conduit or housing channels to prevent mechanical damage, abrasion, or sharp bends.