Product Overview

The Bently Nevada 330101-00-20-15-12-05 is a high-precision eddy current proximity probe belonging to the industry-standard 3300 XL 8mm Transducer System. This sensor is engineered to provide non-contacting measurements of shaft vibration and axial position by generating a voltage signal directly proportional to the gap between the probe tip and the target surface. Designed for Turbine Supervisory Instrumentation (TSI), it offers the critical data required for protecting high-speed rotating assets. Its advanced design ensures thermal stability and linear accuracy, meeting the stringent requirements of API 670 standards.

Key Technical Characteristics and Hardware Parameters

This 3300 XL probe is built to operate in harsh industrial environments, featuring high RFI/EMI immunity and complete interchangeability between system components without the need for field calibration.

• Model Number 330101-00-20-15-12-05

• Probe Tip Diameter 8 mm

• Thread Type 3/8-24 UNF (Standard English Thread)

• Unthreaded Length 0.0 inches (Option -00)

• Overall Case Length 2.0 inches (Option -20)

• Total System Length 1.5 meters (approx. 4.9 feet) (Option -15)

• Connector Type Miniature coaxial ClickLoc connector (Option -12)

• Agency Approvals Multiple Hazardous Area certifications (Option -05)

• Linear Range 2.0 mm (80 mils)

• Sensitivity 7.87 V/mm (200 mV/mil) when integrated with 3300 XL Proximitor

• Operating Temperature -51°C to +177°C (-60°F to +351°F)

Industrial Applications and Operational Use Cases

The 330101nd-series probes are essential for monitoring equipment utilizing fluid-film bearings. Their robust construction allows for reliable operation in the presence of oil, steam, and high-vibration conditions.

• Radial Vibration Analysis Monitoring shaft orbits and dynamic displacement in large-scale turbines and centrifugal compressors.

• Axial Position (Thrust) Monitoring Tracking shaft movement to prevent rotor-to-stator contact and thrust bearing damage.

• Keyphasor and Speed Measurements Providing once-per-turn phase references and high-speed RPM data for machinery diagnostics.

• Eccentricity Measurements Determining shaft bow and thermal growth during machine startup and shutdown cycles.

• Hazardous Environment Deployment Utilizing the -05 approval option for safe installation in explosive or volatile process zones.

The integrated ClickLoc connector system features gold-plated contacts and a locking mechanism that prevents signal interruption due to vibration, ensuring the highest level of signal integrity for predictive maintenance programs.