Bently Nevada 330909-00-20-10-02-05 3300 NSv Proximity Probe

Description

Steel probe body with 3/8-24 UNF thread and integral stainless steel armor (Option 00 unthreaded length, Option 20 case length) defines the 330909-00-20-10-02-05 3300 NSv proximity probe. This transducer component is used in the 3300 XL NSv proximity transducer system to measure non-contact static and dynamic displacement in applications with restricted target geometry or tight clearances.

This configuration incorporates a 1.0 m total length (Option 10) of FEP-insulated coaxial cable protected by flexible AISI 302 stainless steel armor. It terminates in a miniature coaxial ClickLoc connector (Option 02, without connector protector) and includes multiple international hazardous area certifications (Option 05). While standard 3300 XL 8 mm probes require larger targets, the 3300 NSv system is calibrated for smaller shaft diameters and narrow counterbores down to 9.5 mm (0.375 in), resolving cross-talk issues in high-density machine configurations.

Features

• Threaded Case with Armor: Built with 3/8-24 UNF-2A threads and flexible AISI 302 stainless steel armor for physical protection in harsh operating environments.
• Option 00 Unthreaded: Specifies 0.0 in of unthreaded case length, making the entire 2.0 in (Option 20) case length fully threaded.
• Option 10 Cable Length: Includes a 1.0 m (39 in) total probe cable length, designed to match the total system length when combined with a 3300 NSv extension cable.
• Option 02 Connector: Equipped with a miniature coaxial ClickLoc connector on a standard coaxial cable without a connector protector.
• Option 05 Approvals: Certified under multiple international agencies for hazardous area installations, including CSA, ATEX, and IECEx approvals.
• Tight-Clearance Target Calibration: Calibrated for reduced target sizes, small-bore machinery, and shaft diameters smaller than 20 mm (0.8 in).

Applications

• Centrifugal and axial compressors with limited installation space
• High-speed aeroderivative gas turbines
• Small shaft vibration and axial position measurements under 20 mm (0.8 in) diameter
• Fluid-film bearing monitoring in small-bore pumps and generators

Ordering Information

Technical Specifications

Installation Guidelines

• Ensure the probe tip is isolated from nearby metal structures; a minimum target diameter of 8.9 mm (0.35 in) and a recommended counterbore diameter of 13 mm (0.5 in) should be maintained to prevent side-view interference.
• Avoid over-torqueing the probe during installation; the maximum rated torque for the 3/8-24 thread case is 33.9 N-m (300 in-lb), with a recommended installation torque of 11.3 N-m (100 in-lb).
• Maintain the minimum bend radius of 25.4 mm (1.0 in) for the armored coaxial cable to prevent internal conductor damage.
• Ensure the combined length of the probe cable and the 3300 NSv extension cable equals the total system length calibration of the 3300 XL NSv Proximitor Sensor (either 5.0 m or 7.0 m).

Compliance and Certifications

• CSA/NRTL: Class I, Zone 0: AEx/Ex ia IIC T5...T1 Ga; Class I, Division 1, Groups A, B, C, D; Class II, Groups E, F, G; Class III
• ATEX/IECEx: II 1 G Ex ia IIC T5...T1 Ga; II 3 G Ex nA IIC T5...T1 Gc; Ex ec IIC T5...T1 Gc
• EMC Directive: 2014/30/EU (EN 61000-6-2, EN 61000-6-4)
• RoHS Directive: 2011/65/EU
• Functional Safety: SIL 2 capable (HFT=0), SIL 3 capable (HFT=1)