Configured for precise rotor position measurement in rotating machinery, the Bently Nevada 330101-08-20-12-05 (330101 8 mm Proximity Probe) provides direct physical signal acquisition for vibration monitoring platforms.

Configuration Matrix

• Model: 330101 (3300 XL 8 mm Probe)

• Thread: 3/8-24 UNF (Without armor)

• Cable Length: 2.0 meters (6.6 feet)

• Connector: Miniature coaxial ClickLoc

• Cable Type: FluidLoc

• Agency Approval: CSA, ATEX, IECEx

Hardware Specifications

Mechanical Monitoring and Signal Integrity

The transducer utilizes an eddy-current principle to detect shaft displacement relative to the probe tip. Accurate rotor dynamics analysis requires precise gap voltage validation, with typical targets set at -10 VDC at a 1.27 mm gap. Maintaining system signal integrity requires strict adherence to cross-talk suppression guidelines; adjacent probes must be spaced to prevent carrier frequency interference. The FluidLoc cable construction provides environmental sealing, preventing fluid ingress into the coaxial dielectric that could otherwise alter system impedance and degrade the dynamic output signal.

Ordering Info

• 330101-08-20-12-05 Proximity Probe unit

• Integral FluidLoc coaxial cable (2.0 m)

• Mounting nuts (2x)

• Safety and regulatory compliance documentation

Field Installation Guidelines

• Surface Prep: Ensure the target shaft area is smooth and free of burrs to maintain signal linearity.

• Threading: The 3/8-24 UNF mounting thread allows for fine axial gap adjustments; tighten the locking nuts firmly to prevent drift under vibration.

• Clearance: Ensure the probe tip is installed at the recommended initial air gap to avoid contact during high-amplitude transient events.

• Grounding: Secure the probe housing to a common machine ground to maintain signal return path stability.

• Cable Routing: Keep the coaxial cable away from potential high-EMI sources and avoid tight bends that exceed the cable's minimum radius specification.

Delivery Information

• Delivery time: 2-7 days when payment finish.

• Logistics: Global dispatch via DHL, FEDEX, or UPS.

• Packaging: All units are enclosed in anti-static industrial packaging to prevent electrostatic damage and withstand handling stresses during transit.

Frequently Asked Questions

• Q: Is the 330101 probe compatible with older 3300 system Proximitors?

  A: Yes, it is backward compatible, but system accuracy is optimized when used with the matching 3300 XL transducer components.

• Q: What is the purpose of the 3/8-24 UNF thread?

  A: It provides the standard mechanical interface for mounting the probe into bearing housings and proximity probe brackets.

• Q: Does the probe require field recalibration?

  A: No, the 3300 XL system is factory-calibrated for interchangeability, eliminating the need for site-specific probe calibration.

• Q: Can the FluidLoc cable be exposed to hydraulic oil?

  A: Yes, the FluidLoc design is engineered to resist fluid wicking and degradation when exposed to common industrial lubricants.

• Q: What happens if the probe tip touches the shaft?

  A: Contact may result in mechanical damage to the probe tip and temporary loss of the signal, which will trigger a monitor "Danger" alarm.

• Q: Can I use this probe in hazardous areas?

  A: Yes, this model includes CSA, ATEX, and IECEx approvals for use in certified hazardous environments when installed with appropriate barriers.

• Q: How do I verify the probe is operational?

  A: Check the gap voltage output at the Proximitor terminals using a high-impedance multimeter to ensure the value falls within the linear operating range.

• Q: Is the cable armored on this specific model?

  A: No, this configuration is supplied without metallic armor.