Bently Nevada 330704-000-050-10-01-05 3300 XL 11 mm Proximity Probe

Description

Metric thread M14 x 1.5 armored steel probe body (Option 000 unthreaded) with a 50 mm case length (Option 050) and a 1.0 m lead (Option 10) specifies the 330704-000-050-10-01-05 3300 XL 11 mm proximity probe configuration. This component belongs to the 3300 XL 11 mm Proximity Transducer System, producing a 3.94 V/mm (100 mV/mil) output for non-contacting vibration and displacement measurements on fluid film bearing machines.

This armored configuration provides enhanced mechanical protection for the coaxial cable inside harsh industrial environments, shielding the cable from physical damage and abrasion. The integrated ClickLoc connector with a connector protector (Option 01) prevents moisture and oil ingress at the extension cable interface, maintaining signal integrity. The 11 mm tip diameter extends the linear measurement range to 4.0 mm, making it suitable for axial position and differential expansion measurements compared to standard 8 mm systems.

Features

• M14 x 1.5 metric threaded case with integrated AISI 302 stainless steel armor and FEP outer jacket.
• Option 000 unthreaded length and Option 050 case length specify a fully threaded 50 mm steel probe body.
• Integrated 1.0 m standard triaxial cable (Option 10) with ClickLoc coaxial connector and pre-installed connector protector.
• Polyphenylene sulfide (PPS) probe tip with Viton O-ring seal to prevent process media leakage.
• Multiple Approvals (Option 05) certifying the assembly for hazardous area locations under CSA, ATEX, and IECEx guidelines.

Applications

Common applications for this armored 11 mm probe include:

• Axial thrust position measurements on steam and gas turbines.
• Ramp differential expansion measurements on industrial steam turbines.
• Rod position or rod drop monitoring on reciprocating compressors.
• Tachometer, zero-speed, and phase reference (Keyphasor) signal generation.

Ordering Information

Technical Specifications

Installation Guidelines

Ensure correct thread engagement and torque limits during installation. Secure the probe case to a maximum torque of 21.1 N-m (187 in-lb) for the M14 x 1.5 thread. The minimum bend radius of the armored cable must be maintained above 25.4 mm (1.0 in). Avoid exposing probe-to-extension-cable connections to turbine oil or industrial fluids without ensuring the connector protector is fully mated. Ground the system shield at the monitor end only, preventing ground loops across the machine case.

Compliance and Certifications

The 330704-000-050-10-01-05 probe is certified for use in hazardous areas under multiple agency guidelines:

• ATEX/IECEx: Intrinsically safe (Ex ia IIC T5...T1 Ga, Ex ia IIIC T90degC...T280degC Dc) and non-sparking/increased safety (Ex nA IIC T4/T5 Gc, Ex ec IIC T4/T5 Gc).
• North America (cNRTLus): Class I, Zone 0, AEx/Ex ia IIC T5...T1 Ga; Class I, Division 2, Groups A, B, C, D (non-incendive).
• NEPSI: China hazardous area approval package matching standard international electrical safety configurations.
• EMC: EN 61000-6-2 (Industrial Immunity), EN 61000-6-4 (Industrial Emissions).
• RoHS: Compliant with European Union RoHS Directive 2011/65/EU.