Description

The Bently Nevada 330101-30-49-10-12-05 is a high-precision, non-contact 8 mm proximity probe designed to measure static displacement and dynamic shaft vibration within critical rotating machinery. As a key component of the Bently Nevada 3300 XL monitoring chain, this eddy-current sensor provides an output voltage directly proportional to the distance between the probe tip and the observed conductive target surface.

This specific configuration is uniquely distinguished by its 3.0-inch unthreaded length and 4.9-inch overall case length, featuring standard 3/8-24 UNF threads without protective armor. It is equipped with a 1.0-meter (3.3 feet) integrated coaxial cable engineered with patented FluidLoc technology (Option 12). The FluidLoc design incorporates an internal block that prevents oil, process lubricants, and other high-pressure fluids from migrating or leaking out of the machine casing through the interior of the coaxial cable. Additionally, this configuration includes the -05 Agency Approval option, certifying the transducer system for intrinsically safe and non-incendive environments under CSA, ATEX, and IECEx hazardous area regulations.

Features

• Eddy-Current Sensing Principle: Offers highly accurate, non-contact measurements of both static shaft position and high-frequency dynamic rotor vibration.
• FluidLoc Cable Protection: Patented interior block design blocks process oils and liquids from leaking along the cable interior to protect field connections.
• ClickLoc Coaxial Connector: Gold-plated miniature coaxial connector locks securely with finger-tight force, providing a tactile click to prevent loosening under intense machine vibration.
• Rugged Tip and Body Integration: Engineered with a patented TipLoc molding method that provides an exceptionally strong bond between the PPS probe tip and the stainless steel body.
• High Cable Pull Strength: Built with a CableLoc design that provides up to 330 N (75 lbf) of pull strength to withstand demanding industrial handling.
• Hazardous Location Approvals: Approved for Class I, Division 1 and Zone 0 explosive atmospheres under North American and European standard directives.

Applications

• Steam and Gas Turbines: Radial shaft vibration, axial rotor thrust displacement, and speed measurements on major turbine trains.
• Wet Bearing Environments: Perfect for installations on oil-lubricated bearings where preventing process oil migration via the sensor cable path is critical.
• Centrifugal Compressors: Precise displacement monitoring on high-speed industrial compressors in refinery and petrochemical plants.
• Heavy Duty Process Pumps: Shaft motion tracking on critical boiler feed pumps and fluid transportation systems.

Ordering Information

Technical Specifications

Installation Guidelines

• Proper Probe Gap: Gap the probe per calibration requirements, typically at -9 Vdc [approximately 1.27 mm (50 mils)] for radial vibration monitoring.
• Mechanical Fitment: Verify that the 3.0-inch unthreaded portion is fully cleared in the mounting sleeve, and that a minimum of 0.8 inches of thread engagement is maintained.
• Grounding and Shielding: Properly route the FluidLoc coaxial cable away from high-voltage electrical fields and run through grounded protective conduit where appropriate.
• Cold Temperature Limit: Avoid exposing the probe to ambient conditions below -34 degC (-30 degF) to prevent failure of the internal Viton pressure seal.

Compliance and Certifications

• Hazardous Area approvals (Option 05): ATEX, IECEx, and CSA certified for Class I, Zone 0, Ex ia IIC T5...T1 Ga intrinsically safe installations.
• CE Mark: Fully compliant with European Union electromagnetic compatibility and industrial directive requirements.