Bently Nevada 330101-00-20-50-01-00 3300 XL Proximity Probe

Description

The 330101-00-20-50-01-00 is a non-contacting eddy current proximity sensor configuration belonging to the Bently Nevada 3300 XL 8 mm Proximity Transducer System series. This assembly provides an output voltage directly proportional to the physical gap distance between the face of the probe tip and any observed conductive target metal. The sensor system is engineered for both static position displacement measurements and dynamic vibration monitoring. It is widely specified across heavy industrial machinery sectors, specifically for fluid-film bearing turbo-machinery, as well as for Keyphasor, speed, and timing applications.

The complete standard 330101-00-20-50-01-00 8 mm 5-meter system is designed for backward compatibility and parts-level interchangeability with standard non-XL 3300 series proximity equipment. Its mechanical construction incorporates a patented TipLoc molding method that forms a robust chemical and mechanical bond between the probe tip and the case body. Furthermore, the cable assembly employs a patented CableLoc design to deliver a high-integrity pull strength where the coaxial line joins the probe internal sensor head.

Features

• Fully compliant with the mechanical configuration, linear measurement range, accuracy, and temperature stability specifications of the American Petroleum Institute (API) 670 Standard (4th Edition).
• Gold-plated ClickLoc coaxial connectors ensure corrosion resistance, requiring only basic finger torque to engage a secure lock that prevents rotational loosening under operation.
• Advanced component design enables complete interchangeability of the probe head, extension cable, and the Proximitor Sensor without necessitating bench calibration or precise part matching.
• Durable mechanical build withstands high pulling tension, providing up to 330 N (75 lbf) pull strength at the cable-to-tip junction interface.

Applications

• Radial vibration analysis on fluid-film bearing industrial machinery
• Thrust (axial) position tracking for large gas and steam turbines
• Keyphasor, phase angle, and shaft rotation speed measurements
• Clearance and expansion monitoring on industrial compressors, pumps, and fans

Ordering Information

Technical Specifications

Installation Guidelines

• Probe Gap Calibration: Set the default physical installation gap to approximately 1.27 mm (50 mils), corresponding to the center point of the linear range output loop, unless specified otherwise by machine design documentation.
• Connector Care and Assembly: Ensure that the coaxial contacts are completely dry and clear of oil films before coupling. Connect the ClickLoc miniature coaxial junctions finger-tight until the locking mechanism clicks to achieve safe electrical continuity.
• Cable Routing Precautions: Avoid routing the delicate coaxial cable over internal machine edges with small radii. Maintain a minimum separation of at least 40 mm (1.6 in) for axial position sensors or 38 mm (1.5 in) for radial vibration setups to eliminate cross-talk phenomena.
• Connector Protector Placement: Verify that the factory-installed connector protector is seated correctly over the coupled probe-to-cable intersection to guard against oil leakage and ingress from the machine case interior.

Compliance and Certifications

• Electrical Safety: Complies with the European CE mark directives.
• North America Hazardous Area Approvals: Ex ia IIC T4/T5 Class I Zone 0 or Class I Division 1 Groups A, B, C, D (when installed with intrinsically safe zener barriers or galvanic isolators); Ex nA IIC T4/T5 Class I Zone 2 or Class I Division 2 Groups A, B, C, D (installed without barriers).
• Europe Hazardous Area Certification: II 1 G EEx ia IIC T4/T5; II 3 G EEx nAII T4/T5.
• IECEx Certification: Ex ia IIC T4/T5 (-51 Celsius <= Ta <= +100 Celsius / -35 Celsius <= Ta <= +85 Celsius); AEx ia IIC Temperature Classification per official system parameters.