Bently Nevada 330708-00-10-90-02-00 3300 XL 11 mm Proximity Probe

Description

Option 00 (0.0 in unthreaded length), Option 10 (1.0 in overall case length), Option 90 (9.0 m total length), Option 02 (Miniature coaxial ClickLoc connector, standard cable), and Option 00 (no agency approvals required) define this armored 3300 XL 11 mm proximity probe configuration — 330708-00-10-90-02-00.

This 3300 XL 11 mm proximity probe features a 5/8-18 UNF threaded body wrapped in stainless steel armor to withstand physical abrasion and harsh environmental conditions on rotating machinery. Designed to measure static and dynamic shaft displacement, the probe is optimized for use within the 3300 XL 11 mm Transducer System, delivering a 4.0 mm (160 mil) linear measurement range that is critical for monitoring steam turbine axial position, differential expansion, and compressor rod drop.

Features

• Armor-protected design (Model 330708) featuring AISI 302 stainless steel armor with a protective FEP outer jacket over the triaxial cable.
• Option 00 unthreaded length providing a fully threaded probe case with 0.0 inches of unthreaded body to maximize mounting stability.
• Option 10 overall case length measuring 1.0 inch, designed for compact installation envelopes or shallow-depth machine casings.
• Option 90 total length of 9.0 meters (29.5 feet) of integral triaxial cable, allowing direct connection to a 9-meter Proximitor Sensor without an intermediate extension cable.
• Option 02 miniature coaxial ClickLoc connector on standard triaxial cable, featuring corrosion-resistant gold-plated brass contact pins.
• Option 00 agency approval configuration, making it suitable for general-purpose industrial applications where hazardous area certifications are not required.
• High-stability polyphenylene sulfide (PPS) probe tip capable of withstanding severe operating temperatures and fluid exposure.

Applications

• Steam turbine axial (thrust) position and ramp differential expansion measurements.
• Reciprocating compressor rod drop and rod position monitoring.
• Non-contacting shaft vibration and displacement measurements on fluid film bearing machines.
• Industrial rotating machinery diagnostic and protection systems.
• High-speed tachometer, zero speed, and phase reference (Keyphasor) signal generation.

Ordering Information

Technical Specifications

Installation Guidelines

• Ensure proper probe gap setting of 2.5 mm (100 mils) using a feeler gauge or by verifying the DC gap voltage (approximately -10 Vdc at the linear midpoint).
• Do not exceed the maximum rated installation torque of 45.2 N-m (400 in-lb) for the 5/8-18 UNF probe case to avoid thread binding or mechanical deformation.
• Maintain a minimum bend radius of 25.4 mm (1.0 in) along the armored cable run to protect internal coaxial structural integrity.
• Ensure coaxial ClickLoc connectors are kept dry and clean during routing; avoid wrapping exposed connections in standard silicone tape when turbine oil is present.

Compliance and Certifications