330101-00-30-50-02-CN | Bently Nevada | 3300 XL 8 mm Proximity Probes

Description

The 330101-00-30-50-02-CN non-contacting transducer element provides precise, static and dynamic proximity data for critical rotating machinery. Designed for mounting within machinery housings, this proximity probe uses eddy current principles to generate an output voltage directly proportional to the physical gap between the probe tip and an observed conductive target surface. The device interfaces seamlessly with plant-wide monitoring instrumentation to track parameters such as radial vibration, axial position, speed, and Keyphasor references on fluid-film bearing machines.

Constructed with a rugged stainless steel case and a high-strength polyphenylene sulfide tip, the unit operates reliably under extreme conditions including high temperatures and mechanical stress. It incorporates specialized mechanical bonding and advanced strain relief to withstand harsh industrial environments, ensuring consistent measurement integrity and long-term durability without the need for periodic re-calibration.

Features

• Molded Tip Fusion: Employs a patented TipLoc molding method that produces an exceptionally robust bond between the polyphenylene sulfide probe tip and the steel body.
• High-Strength Cable Connection: Incorporates a patented CableLoc design providing a robust 330 N (75 lbf) pull strength to ensure secure attachment from the probe body to the integrated lead cable.
• Hand-Tightening Coaxial Connector: Features a corrosion-resistant, gold-plated ClickLoc miniature coaxial interface that locks into position with a distinct mechanical click, preventing loosening from machine vibrations without requiring specialized tools.
• Full System Interchangeability: Fully complies with American Petroleum Institute (API) 670 standards for mechanical configuration, linear range, and accuracy, allowing components to be replaced without re-calibrating the entire monitor loop.
• Backward Compatibility: Operates interchangeably with non-XL 3300 series 5 mm and 8 mm proximity transducer system elements, ensuring versatile integration into existing plant monitoring networks.

Applications

• Fluid-film bearing industrial machines
• Radial vibration monitoring on rotating shafts
• Axial shaft position tracking
• Keyphasor reference measurements
• Speed and overspeed sensing on high-speed industrial turbines

Ordering Information

Technical Specifications

Connections/Interfaces

Installation Guidelines

• Thread Engagement Boundaries: Strictly observe the maximum thread engagement limit of 0.563 inches for 3/8-24 UNF configurations. Exceeding this boundary can lead to mechanical binding and casing damage during installation.
• Cable Bend Radius Restrictions: Maintain a minimum cable bend radius of 25.4 mm (1.0 inch) along all FEP cable runs to prevent micro-fractures in the internal conductors.
• Connector Tightening Method: Connect the miniature coaxial plug to the extension cable finger-tight only until a distinct mechanical click is heard. Do not apply mechanical tools or pliers to the gold-plated ClickLoc joints.
• Probe Gap Optimization: Set the physical probe gap distance using an electrical voltmeter connected to the sensor output. Adjust the mechanical position until the DC voltage reads approximately -9 Vdc, which corresponds to the mid-point of the linear measurement window.
• Moisture Protection Action: Protect all external cable-to-cable connections using a dedicated connector protector kit or silicone self-fusing tape to mitigate fluid entry and prevent environmental degradation.

Compliance and Certifications

• FCC Rules: Compliant with Part 15 of FCC interference rules
• European Directives: EMC Directive 2014/30/EU, RoHS Directive 2011/65/EU
• Industrial EMC Standards: EN 61000-6-2 (Industrial Immunity), EN 61000-6-4 (Industrial Emissions)
• China RoHS: 15-Year Environment Friendly Use Period (EFUP) specification under standard SJ/T 11364-2024
• Hazardous Area Standards: GB/Ex certified for hazardous environments under suffix option -CN

FAQ

What happens if the internal probe thread engagement exceeds the nominal limits?

Exceeding the maximum recommended 0.563 inches of thread depth can create physical binding during installation. This mechanical stress can score the casing or permanently jam the assembly into the bracket.

Is it necessary to use tools to secure the miniature coaxial cable joint?

The gold-plated ClickLoc connectors are specifically designed for hand-tight installation. You must tighten them finger-tight until you hear a mechanical click, as using pliers or tools can distort the contact boundaries.

What is the baseline electrical resistance signature of this probe module?

For this specific 5.0 meter configuration, the nominal direct current resistance between the inner center conductor and the outer conductor shield is 8.73 ohms ±0.50 ohms.

Can this probe be paired with an 11-meter proximity sensor system?

No, this 5-meter total length probe option is calibrated and designed exclusively for use with a 5.0 meter Proximitor sensor loop to maintain proper system accuracy and impedance matching.