Bently Nevada 330101-00-20-05-02-00 3300 XL 8 mm Proximity Probe

Description

For precise non-contact vibration and shaft position measurements, the Bently Nevada 330101-00-20-05-02-00 8 mm proximity probe offers reliable eddy-current sensing in a fully threaded, unarmored mechanical configuration. This specific model is a vital component of the 3300 XL 8 mm Proximity Transducer System, engineered to detect radial vibration, axial position, and speed in critical rotating machinery such as steam turbines, gas turbines, compressors, and high-pressure pumps.

The 330101-00-20-05-02-00 configuration features a completely threaded 3/8-24 UNF-2A case of 2.0 inches (51 mm) with an unthreaded length of 0.0 inches. This fully threaded structure allows the probe to be mounted flush against bearing housings or specialized brackets, providing maximum thread engagement and secure installation in space-restricted environments. With a total cable length of 0.5 meters (1.6 feet) and an unarmored standard FEP-insulated coaxial cable, this probe provides exceptional routing flexibility. It terminates in a miniature ClickLoc coaxial connector, ready for seamless connection to a compatible 3300 XL extension cable and Proximitor sensor.

Features

• Eddy-current operating principle for non-contact, high-accuracy measurement of shaft vibration and position.
• Fully threaded 3/8-24 UNF-2A case with no unthreaded section (0.0 in) for versatile, deep-thread engagement.
• Rugged polyphenylene sulfide (PPS) tip construction with a high-strength stainless steel probe body.
• Triaxial FEP-insulated flexible standard cable without armor for clean routing in protective conduits.
• Gold-plated miniature ClickLoc coaxial connector offers secure "click" style coupling.
• Engineered for high-temperature and high-pressure industrial environments, resisting moisture and turbine oils.

Applications

• Steam and gas turbine shaft vibration and axial displacement monitoring.
• Rotor thrust and radial vibration analysis in high-speed compressors.
• Industrial pump displacement and shaft positioning in petrochemical facilities.
• Permanent machine protection in heavy-duty rotating machinery bearing housings.

Ordering Information

Technical Specifications

Installation Guidelines

To ensure precise vibration measurements and prolong the life of the proximity sensor system, follow these standard practices:

• Verify the probe gap is set per system calibration, typically aimed at a target of -9 Vdc [approximately 1.27 mm (50 mils)] for radial vibration.
• Do not exceed the maximum rated case torque of 11.2 N-m (100 in-lbf) during installation to prevent thread or casing damage.
• Ensure that the minimum cable bend radius of 25.4 mm (1.0 in) is maintained at all routing points.
• Use proper shielding and grounding practices to protect against electromagnetic interference (EMI) along the field wiring run.
• The connection between the probe cable and the extension cable should be kept clean, dry, and secure. Standard ClickLoc connectors should be tightened finger-tight.