Configured for high-frequency displacement and vibration measurement in rotating machinery, the Bently Nevada 330101-00-18-20-12-05 (330101 Proximity Probes) provides direct physical execution of eddy-current based signal transduction within 3300 XL transducer systems.

Suffix Breakdown

The part number 330101-00-18-20-12-05 defines the following hardware configuration:

• 330101: 8 mm Proximity Probe

• 00: Unthreaded Length

• 18: Overall Case Length (180 mm)

• 20: Total Length (2.0 m)

• 12: Connector Option

• 05: Agency Approval Option

Hardware Specifications

Mechanical Monitoring Characteristics

System performance relies on accurate eddy-current probe scaling against the target shaft surface. To ensure valid rotor dynamics data, the gap voltage must be verified at the Proximitor sensor output, with a target of -10 VDC within the linear operating range. Operators must ensure cross-talk suppression by maintaining appropriate physical separation between adjacent probes when installing multiple transducers on a single bearing or journal to prevent inter-channel signal interference.

Ordering Info

• 1 x 330101 8 mm Proximity Probe

• 1 x Connector protective dust cap

• Installation and compliance data documentation

Field Installation Guidelines

• Mounting: Secure the probe body into the machinery bracket using the provided locknut. Ensure threaded engagement follows standard industrial practice (5-thread engagement depth).

• Gap Setting: Measure and set the air gap between the probe tip and the target shaft while the machine is at rest using a high-impedance digital voltmeter.

• Grounding: Terminate the coaxial shield at the system rack ground bus to minimize electromagnetic interference (EMI) impact on signal resolution.

• Cabling: Route signal lines in dedicated conduit, isolated from high-voltage AC cabling to prevent induced noise.

Logistics and Transit

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

• Dispatched via DHL/FEDEX/UPS.

• Units are sealed in anti-static industrial packaging to mitigate electrostatic discharge (ESD) and mechanical damage during shipping.

Technical FAQ

• What material targets are supported? The probe is factory-calibrated for AISI 4140 steel; other conductive materials require a specific calibration curve.

• What is the probe sensitivity? The nominal sensitivity is 7.87 V/mm (200 mV/mil).

• How often should calibration be verified? Verify calibration during periodic machine maintenance or if the baseline gap voltage drifts beyond the manufacturer's specified threshold.

• Can the probe operate in hazardous environments? Yes, provided the system is installed in compliance with documented hazardous area approval ratings.

• What extension cables are compatible? Only 3300 XL series coaxial extension cables are approved for use with this probe system.

• What causes unstable gap voltage? Instability is usually caused by damaged cable insulation, loose mechanical mounts, or improper ground termination.

• How is probe health tested? Probe health is confirmed by verifying coaxial cable continuity and confirming the DC gap voltage remains stable within the linear window.

• What is the expected service life? Service life is contingent on ambient thermal exposure and mechanical vibration levels at the mounting location.