Bently Nevada 330104-00-07-10-01-CN 3300 XL 8 mm Proximity Probe

Product Overview

The Bently Nevada 330104-00-07-10-01-CN eddy current sensor belongs to the industry-standard 3300 XL 8 mm series, engineered for non-contacting shaft vibration and position measurements. This high-reliability probe is deployed globally in critical machinery protection systems (TSI) within steam turbine power generation, hydrocarbon processing, and high-capacity mining operations. By delivering precise, continuous voltage output proportional to the micro-inch gap distance between the probe tip and the rotating target, it effectively tracks dynamic shaft displacement and thermal growth. Implementing this probe within your machinery protection loop ensures early detection of rotor imbalance, bearing wear, and misalignment, significantly reducing unplanned plant outages and preventing catastrophic mechanical failures.

Suffix Breakdown

The model number structure of the 330104-00-07-10-01-CN transducer system translates to the following engineered configuration:

• 330104: 3300 XL 8 mm Proximity Probe base model (standard M10 x 1 thread configuration).

• 00: Unthreaded Length Option denoting 0 mm of unthreaded probe body (fully threaded case).

• 07: Overall Case Length Option representing 70 mm (0.07 m) of total case length.

• 10: Total Length Option specifying a 1.0 m total cable assembly length.

• 01: Connector and Cable Type Option equipping a miniature coaxial ClickLoc connector with a pre-installed connector protector, utilizing a standard insulation cable.

• CN: Agency Approval Option certifying the device for country-specific hazardous area regulations (including NEPSI approvals).

Technical Specifications

Technical FAQs

• Q: What is the primary purpose of the integrated connector protector specified by the "01" option?

  A: The connector protector is a factory-installed sleeve that shields the highly sensitive miniature ClickLoc coaxial connection from environmental contamination, such as dust, cutting fluids, and lubricating oil, preventing signal attenuation and ground loops.

• Q: Can this 1.0 m probe be wired directly to a 3300 XL Proximitor Sensor?

  A: No. A 1.0 m probe must be paired with an extension cable (such as a 4.0 m or 8.0 m version) to match the total electrical calibration length of the Proximitor (typically 5.0 m or 9.0 m total system length). Mismatching the total length will cause major calibration and measurement drift.

• Q: What are the target material requirements for the 330104-00-07-10-01-CN to read accurately?

  A: The standard calibration of Bently Nevada 3300 XL 8 mm probes is performed against AISI 4140 steel. If the target shaft is composed of different materials (such as stainless steel or exotic alloys), the Proximitor requires custom recalibration to account for variations in electrical conductivity and magnetic permeability.

Engineering & Installation Guide

• Gap Voltage Verification: During mechanical installation, monitor the DC gap voltage at the Proximitor terminal. Thread the probe inward until the output voltage reads approximately -10.0 VDC. This corresponds to the midpoint of the 2.0 mm linear calibration range. Tighten the locknut to secure the probe, ensuring it does not migrate due to high operational machine vibration.

• Mounting Torque Limits: Do not exceed a torque of 22.6 N-m (200 in-lb) when tightening the M10 probe case into its bracket. Over-tightening can deform the stainless steel sleeve or fracture the internal coil assembly, causing permanent sensor failure.

• Coaxial Cable Bend Radius: Maintain a minimum bend radius of 25.4 mm (1.0 inch) for the probe cable. Tight bends or pinching the coaxial line will damage the internal shielding, introducing electromagnetic noise into the vibration monitoring signal.