Description

The Bently Nevada 330101-30-63-10-02-00 is a high-precision, non-contact 8 mm proximity probe engineered for continuous vibration and shaft position measurements in critical industrial machinery. As part of the 3300 XL series, this probe utilizes eddy-current technology to translate the displacement between the probe tip and a target shaft into a proportional voltage signal. This particular configuration is uniquely customized with a standard 3/8-24 UNF threaded body without mechanical armor, showcasing a 3.0-inch unthreaded length, a 6.3-inch overall case length, a 1.0-meter standard triaxial cable, and a gold-plated miniature ClickLoc coaxial connector, and does not require hazardous area approval certifications.

When integrated with a 3300 XL Proximitor sensor and extension cable, this probe functions as a key component of the 3300 XL machinery protection loop. This system is fully compliant with API 670 standards, making it highly reliable for monitoring turbine rotor dynamics, bearing wear, and casing expansion in hazardous and high-temperature environments.

Features

• Non-contact eddy-current measurement principle for accurate, wear-free displacement readings.
• Molded polyphenylene sulfide (PPS) probe tip offers excellent chemical and thermal resistance.
• Corrosion-resistant AISI 303 or 304 stainless steel probe body for long-term survival in aggressive environments.
• 75 ohm triaxial cable insulated with fluoroethylene propylene (FEP).
• Gold-plated miniature ClickLoc coaxial connector ensures low contact resistance and reliable connection.
• Threaded 3/8-24 UNF body simplifies direct-mount installation on machine housings and bearing caps.
• Electrically and physically interchangeable with older 3300-series 5 mm and 8 mm system components.

Applications

• Steam turbine and gas turbine shaft radial vibration monitoring.
• Thrust (axial) position and displacement tracking in high-pressure compressors and turbo-compressors.
• Rotor movement and shaft dynamic alignment verification in large pumps, gearboxes, and industrial fans.
• Continuous condition monitoring and machinery protection across power plants, chemical refineries, and mining facilities.

Ordering Information

Technical Specifications

Installation Guidelines

• Mount the probe with the proper target-to-tip gap specified by the system calibration (typically 1.27 mm / 50 mils for standard 3300 XL linear ranges).
• Ensure the unthreaded length of 3.0 inches is compatible with your internal bracket depth to prevent casing distortion or target contact.
• Do not exceed the recommended case torque during installation. The maximum rated case torque is 22.6 Nm for the first three threads and 33.9 Nm for overall thread engagement.
• Route the cable preserving the minimum bend radius of 25.4 mm (1.0 in) to protect the internal FEP insulation and coaxial shielding.
• Employ proper grounding and shielding procedures, routing shield conductors to the terminal barrier or Proximitor sensor ground to avoid electromagnetic interference.