Bently Nevada 330901-11-25-10-01-00 3300 NSv Proximity Probes

Description

330901-11-25-10-01-00: 3300 NSv proximity probe with 1/4-28 UNF threads and no armor, configured with 1.1 in of unthreaded length, a 2.5 in case length, a 1.0 m (39 in) total length, a standard cable with a miniature coaxial ClickLoc connector and connector protector, and no agency approvals.

This probe configuration differs from sibling models by incorporating a 1.1 in unthreaded section alongside a 2.5 in case length, providing specific clearance dimensions suited for small-bore machinery. Unlike variants with stainless steel armor (such as the 330902) or those featuring FluidLoc cables for oil sealing, this unarmored standard cable version with an integrated fluorosilicone connector protector is suited for clean environments requiring tight spatial clearance.

Features

• Option 11 specifies a 1.1 in (27.9 mm) unthreaded probe body length.
• Option 25 specifies a 2.5 in (63.5 mm) overall threaded case length with 1/4-28 UNF threads.
• Option 10 provides a total electrical length of 1.0 m (39 in) of FEP-insulated coaxial cable.
• Option 01 supplies a gold-plated brass ClickLoc coaxial connector with an integrated fluorosilicone connector protector.
• Option 00 specifies that hazardous area approvals are not required.
• Miniature coaxial cable structure with standard 75 ohm characteristic impedance.
• Unarmored mechanical design for compact, direct-threaded installations.

Applications

• Small-bore machinery vibration monitoring
• Shaft vibration and axial position measurement in aeroderivative gas turbines
• Fluid film bearing clearance and shaft position sensing
• High-speed equipment with limited target geometry and restricted installation clearances
• Process compressor shaft displacement monitoring

Ordering Information

Technical Specifications

Installation Guidelines

• Securely mount the 1/4-28 probe case using a standard recommended torque of 5.1 Nm (45 in-lb); do not exceed the maximum rated limit of 7.3 Nm (65 in-lb).
• Ensure the minimum bend radius of the coaxial cable does not fall below 25.4 mm (1.0 in) during routing.
• Install the integrated fluorosilicone connector protector over the ClickLoc mating interface to prevent liquid contaminants from altering electrical signals.
• Maintain at least 25 mm (1.0 in) separation distance between transducer tips for axial measurements, and 23 mm (0.9 in) for radial vibration measurements to eliminate cross-talk interference.

Compliance and Certifications

• Electromagnetic Compatibility (EMC): European Community Directive 2014/30/EU (EN 61000-6-2, EN 61000-6-4)
• Restriction of Hazardous Substances (RoHS): European Community Directive 2011/65/EU
• China RoHS: SJ/T 11364-2024 (15-year Environment Friendly Use Period)
• Functional Safety: Certified for use in SIL 2 (HFT = 0) and SIL 3 (HFT = 1) safety systems