The Bently Nevada 330104-01-08-50-01-CN serves as the primary 330104 Proximity Probes utilized to execute non-contacting shaft displacement and vibration measurements across Bently Nevada 3500 Machinery Protection System platforms.

Model Suffix Option Matrix

• 330104: 3300 XL 8 mm Proximity Probe, M10 x 1 metric thread

• -01: 10 mm unthreaded length

• -08: 80 mm overall case length

• -50: 5.0 meter (16.4 feet) total cable length

• -01: Miniature coaxial ClickLoc connector, fluidic protection braid

• -CN: China Ex hazardous area approval certification

Hardware Parameters

Machinery Monitoring and TSI Characteristics

This proximity sensor operates on the eddy-current principle to track dynamic shaft behavior and rotor dynamics. The mechanical assembly converts distance parameters into high-frequency RF fields generated by the Proximitor. Field calibration relies on accurate gap voltage validation, targeting a nominal -10 VDC center-scale checkpoint for optimal linearity. Precision tip architecture provides stable eddy-current probe scaling metrics (typically 7.87 V/mm) while suppressing multi-channel cross-talk in dense radial setups.

Shipping Package Inventory

• 1 Bently Nevada 330104-01-08-50-01-CN Proximity Probe

• 2 M10 x 1 Stainless Steel Mounting Locknuts

• 1 Coaxial Connector Silicone Protection Boot

Field Structural Installation Guidelines

• Thread Engagement Stability

  Ensure bracket mounting achieves rigid thread engagement to eliminate case vibration harmonics that distort true target readings.

• Gap Voltage Verification

  Adjust the mechanical insertion depth until gap voltage validation registers approximately -10 VDC at the monitor rack test points.

• Clearance Isolation Radius

  Maintain an open cylindrical radius of at least 15 mm around the probe tip to prevent target anomalies from surrounding metal walls.

• Coaxial Connector Handling

  Hand-tighten the ClickLoc miniature coaxial connector; do not use pliers or mechanical tools to avoid crushing internal pins.

Transducer System FAQ

• Does this proximity probe configuration support hot-swap terminal substitution?

  Yes. The probe can be physically disconnected from the extension cable while the main Proximitor and monitor rack remain energized.

• How does structural surface finish affect eddy-current probe scaling?

  Surface defects or microstructural variations modify electrical conductivity, altering the calibrated 7.87 V/mm linear scale factor.

• What physical symptom indicates a failure in gap voltage validation?

  A validation reading sitting near 0 VDC or exceeding -18 VDC indicates an open circuit, short circuit, or incorrect mechanical gap.

• Can this model operate with any length of extension cable?

  No. The probe must match the specific system configuration, such as a 5.0-meter total system loop length, to preserve calibration.

• How is cross-talk suppression managed when installing two orthogonal probes?

  Maintain a minimum axial separation of 40 mm between probe tips when monitoring identical shaft sections to prevent RF interference.

• What is the thermal operating limit of the tip material?

  The PPS fluoropolymer tip holds structural and electrical integrity during continuous thermal exposure up to 177 deg C.

• Is an external isolation barrier required for hazardous area installations?

  Yes. Intrinsic safety barriers must be wired between the Proximitor sensor loop and the monitoring system rack.

• What occurs if the coaxial connector boot is omitted in humid conditions?

  Moisture ingress increases electrical leakage resistance, causing calibration drift and intermittent channel fault alarms.