Configured for shaft displacement and vibration measurement in rotating machinery, the Bently Nevada 330103-00-11-10-02-CN (330103 Proximity Probes) provides direct physical signal transduction within 3300 XL monitoring systems.

Model Suffix Configuration

The 330103-00-11-10-02-CN part number corresponds to the following configuration specifications:

• 00: Unthreaded length (0 mm).

• 11: Overall case length (110 mm).

• 10: Total length (1.0 meter).

• 02: Connector type (Miniature coaxial).

• CN: Country-specific regulatory approval / Certification variant.

Hardware Specifications

Eddy-Current Signal Conditioning

The 3300 XL transducer system utilizes precise eddy-current probe scaling to ensure linear voltage output proportional to the gap between the probe tip and the rotating target. The system is factory-calibrated to a sensitivity of 7.87 V/mm (200 mV/mil). Accurate gap voltage validation is required during installation, with target values of -10 VDC at the Proximitor sensor output when the probe is positioned at the midpoint of its linear range. Signal integrity across the transducer loop depends on strict impedance matching. Cross-talk suppression is maintained by ensuring adequate physical separation between adjacent probes, preventing interference from overlapping electromagnetic excitation fields in high-density sensor arrays.

Ordering Information

• 330103-00-11-10-02-CN Proximity Probe assembly

• Stainless steel locknut and flat washer

• Regulatory compliance documentation

• Protective connector thread caps

Installation Guidelines

Mechanical Mounting

• Ensure the target shaft surface is free of metallic debris or non-conductive coatings.

• Use a calibrated depth micrometer to set the probe gap.

• Torque the probe locknut to specification to prevent displacement during thermal expansion cycles.

Cabling and Grounding

• Route the coaxial cable through rigid grounded metallic conduit.

• Terminate the probe shield at the designated instrument ground to mitigate 50/60 Hz ground-loop noise.

• Maintain a minimum bend radius of 64 mm to prevent dielectric deformation.

Frequently Asked Questions

• Q: Is this probe compatible with the 3300 XL NSv system?

• A: No. The 330103 is designed for standard 8 mm 3300 XL systems and is not electrically compatible with NSv components.

• Q: Can the 1.0-meter cable be field-spliced?

• A: No. Splicing alters the system impedance and invalidates the calibrated scale factor.

• Q: What is the purpose of the -10 VDC gap target?

• A: It centers the probe within the linear measurement range, providing maximum signal headroom for vibration analysis.

• Q: How does the "CN" suffix affect performance?

• A: The suffix denotes specific regional regulatory compliance; it does not alter the electrical sensitivity or frequency response.

• Q: Can I use this probe on non-conductive shafts?

• A: No. Eddy-current technology requires a metallic conductive target for signal generation.

• Q: What indicates an impedance mismatch?

• A: Mismatches typically manifest as non-linear voltage outputs or high noise floors during system checkout.

• Q: Is the probe tip replaceable?

• A: No. The probe is a factory-sealed unit; damage to the tip requires a complete assembly replacement.

• Q: Should I use thread sealants?

• A: Do not use thread sealants or PTFE tape, as they may compromise the electrical ground path between the probe case and the machine chassis.