Bently Nevada 330101-00-27-50-02-CN 3300 XL 8 mm Proximity Probe

Description

Optimized for machinery protection and condition monitoring architectures, the Bently Nevada 330101-00-27-50-02-CN provides continuous, non-contacting shaft displacement measurements in critical rotating assets. This 3300 XL 8 mm Proximity Probe is a core transducer component engineered to translate physical air-gap variations into high-frequency electrical signals when paired with a matching Proximitor Sensor. Built with premium mechanical and chemical protection materials, it resists the harsh fluidic and thermal environments typically found inside steam turbines, centrifugal compressors, gearboxes, and industrial pumps.

Features

• Thread Profile: 3/8-24 UNF threaded case design without protective armor casing.
• Unthreaded Length (00): Configured with 0.0 inches of unthreaded body, maximizing threaded engagement options inside tapping holes.
• Overall Case Length (27): 2.7-inch total case length provides a stable mounting depth for medium-reach installations.
• System Length (50): Integrated 5.0-meter (16.4 feet) system length, eliminating the need for separate extension cables in short-run environments.
• Advanced Termination (02): Fitted with a standard-cable miniature coaxial ClickLoc connector for moisture-resistant, secure signal transmission.
• Rugged Tip Construction: Polyphenylene sulfide (PPS) tip material offers high chemical resistance and structural integrity across broad thermal ranges.
• Corrosion Resistant Case: AISI 303/304 stainless steel body guarantees resistance to rust and industrial process contaminants.

Applications

• Radial vibration and shaft dynamic displacement monitoring in steam and gas turbines.
• Axial thrust position measurement on high-speed centrifugal compressors.
• Casing expansion and differential expansion monitoring systems.
• Phase reference (Keyphasor) generation for rotational speed tracking.
• Integration with machinery protection systems such as Bently Nevada 3500 and 3300 racks.

Technical Specifications

Connections and Interfaces

Empirical Engineering Insights

Alternative Models & Compatibility

This 3300 XL 8 mm probe is fully backward-compatible with legacy 3300 8 mm proximity transducer systems. However, mixing 3300 XL components with non-XL 3300 components alters the overall scale factor of the system. For standard 200 mV/mil output, ensure the 5-meter probe is combined exclusively with a 5-meter 3300 XL Proximitor Sensor. If an extension cable is required, you must transition to a 9-meter configuration probe/sensor package to maintain calibration integrity.

Application Pitfalls & Engineering Notes

When deploying the unarmored standard cable near sharp casing penetrations or active structural components, route the coaxial lines inside flexible conduits or dedicated tray runs to prevent shearing. Avoid placing the probe tip within 40 mm (1.6 inches) of adjacent probes or metallic surfaces to prevent cross-talk and side-loading errors in the RF field. Keep target surface materials consistent with standard AISI 4140 steel calibrations to prevent severe scale-factor deviation.

Commissioning & Wiring Tips

To perform gap calibration during static machinery setup, use a physical micrometer spindle or the Bently Nevada TK-3 calibrator. Connect a digital voltmeter across the terminal block output of the paired Proximitor. Adjust physical insertion depth until the DC bias voltage reads approximately -10.0 VDC, corresponding to the electrical center of the linear dynamic range.

Installation Guidelines