Bently Nevada 330173-07-11-10-02-00 3300 5mm Proximity Probe

Description

330173-07-11-10-02-00 is a metric-threaded 3300 5 mm proximity probe designed for non-contact eddy-current displacement measurements in environments with restricted physical space. This configuration is built without mechanical armor (unarmored) and features an M8 x 1 threaded body, a 70 mm unthreaded length (Option 07), and a 110 mm overall case length (Option 11). The integral coaxial cable has a total length of 1.0 meter (Option 10) terminated with a miniature coaxial ClickLoc connector (Option 02), and requires no hazardous area agency approvals (Option 00).

This probe is part of the 3300 5 mm Proximity Transducer System, which is mechanically and electrically interchangeable with previous 3300 systems but offers enhanced physical durability. Through Bently Nevada's TipLoc molding process, a stronger chemical bond is achieved between the 5.2 mm probe tip and the stainless steel case, reducing the risk of premature tip separation in harsh operating conditions. Operating in combination with a standard Proximitor sensor and compatible extension cable, this sensor chain delivers a stable, accurate output voltage of 7.87 V/mm (200 mV/mil) that is directly proportional to the gap between the probe tip and the observed target surface.

Features

• M8 x 1 Threaded Design: Standard metric mounting profile for precise installation on industrial rotating machinery.
• 70 mm Unthreaded Length: Engineered with a tailored unthreaded section (Option 07) for specialized mounting bracket depths.
• 110 mm Overall Case: Robust stainless steel sleeve (Option 11) providing a robust 40 mm active threaded length to withstand physical forces.
• Patented TipLoc Construction: Chemically bonds the 5.2 mm PPS plastic tip to the probe body, preventing tip loss under intense vibration.
• 1.0 Meter Total Length: Compact 1.0-meter integral lead length (Option 10) designed to interface with standard extension cables.
• Miniature ClickLoc Coaxial Connector: Provides secure, gold-plated, finger-tight coupling to the extension cable with superior locking force.
• Unarmored Design: Offers highly flexible routing of the coaxial cable (Option 02) in dry, protected conduits or internal machine housings.

Applications

The 330173-07-11-10-02-00 proximity probe is typically deployed in compact industrial machinery and rotating equipment with limited mounting clearances, including:

• Small steam turbines, gas turbines, and turbochargers
• Centrifugal and reciprocating compressors
• High-speed industrial gearboxes and compact fans
• Electric motors, generators, and exciter bearing housings
• Radial shaft vibration, axial position, and Keyphasor phase reference measurements

Ordering Information

Technical Specifications

Installation Guidelines

Proper installation is vital for achieving the stated measurement performance and ensuring probe longevity:

• Case Torque: Tighten the metric M8 x 1 probe case using a torque wrench. The recommended tightening torque is 5.1 N-m (45 in-lb), up to a maximum limit of 7.3 N-m (65 in-lb) to avoid mechanical damage or thread binding.
• Thread Engagement: Maintain standard thread engagement limits. The maximum thread engagement length is 12 mm for metric threads per industry standards.
• Cable Bend Radius: Do not exceed the minimum cable bend radius of 25.4 mm (1.0 in) during routing to prevent internal conductor fatigue.
• Coaxial Connection: Ensure the ClickLoc miniature coaxial connectors are dry, clean, and free of oil before mating. Connectors should be hand-tightened (finger-tight) to establish a stable electrical contact.
• Target Gap: Set the probe gap at the recommended nominal offset of 1.27 mm (50 mils) from the target surface using a digital voltmeter or feeler gauges.